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1. Stabilizing effect of total ankle arthroplasty by distal translation and lateralization of talus in varus ankle deformity

Author: Noguchi, T., Hirao, M., Okamura, G., Etani, Y., Ebina, K., Tsuboi, H., Goshima, A., Miyama, A., Takahi, K., Takami, K., Tsuji, S., Okada, S., and Hashimoto, J.
Published: 2024
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2. Optical and Near-infrared View of Planet-forming Disks and Protoplanets

Author: Benisty, M., Dominik, C., Follette, K., Garufi, A., Ginski, C., Hashimoto, J., Keppler, M., Kley, W., and Monnier, J.
Subjects: Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract: In this chapter of the Protostars and Planets VII, we review the breakthrough progress that has been made in the field of high-resolution, high-contrast optical and near-infrared imaging of planet-forming disks. These advancements include the direct detection of protoplanets embedded in some disks, and derived limits on planetary masses in others. Morphological substructures, including: rings, spirals, arcs, and shadows, are seen in all imaged infrared-bright disks to date, and are ubiquitous across spectral types. These substructures are believed to be the result of disk evolution processes, and in particular disk-planet interactions. Since small dust grains that scatter light are tightly bound to the disk's gas, these observations closely trace disk structures predicted by hydrodynamical models and serve as observational tests of the predictions of planet formation theories. We argue that the results of current and next-generation high-contrast imaging surveys will, when combined with complementary data from ALMA, lead to a much deeper understanding of the co-evolution of disks and planets, and the mechanisms by which planets form., Comment: Review Chapter for Protostars and Planets VII, Editors: Shu-ichiro Inutsuka, Yuri Aikawa, Takayuki Muto, Kengo Tomida, and Motohide Tamura. Accepted version, before community feedback. 31 pages (37 with references and appendix), 17 figures. This Chapter is dedicated to our co-author Willy Kley. An obituary written by Richard Nelson can be found at the end of the Chapter
Published: 2022

3. Massive compact disks around FU Orionis-type young eruptive stars revealed by ALMA

Author: Kóspál, Á., de Miera, F. Cruz-Sáenz, White, J. A., Ábrahám, P., Chen, L., Csengeri, T., Dong, R., Dunham, M. M., Fehér, O., Green, J. D., Hashimoto, J., Henning, Th., Hogerheijde, M., Kudo, T., Liu, H. B., Takami, M., and Vorobyov, E. I.
Subjects: Astrophysics - Solar and Stellar Astrophysics
Abstract: FU Orionis-type objects (FUors) are low-mass pre-main sequence stars undergoing a temporary, but significant increase of mass accretion rate from the circumstellar disk onto the protostar. It is not yet clear what triggers the accretion bursts and whether the disks of FUors are in any way different from disks of non-bursting young stellar objects. Motivated by this, we conducted a 1.3 mm continuum survey of ten FUors and FUor-like objects with ALMA, using both the 7 m array and the 12 m array in two different configurations to recover emission at the widest possible range of spatial scales. We detected all targeted sources and several nearby objects as well. To constrain the disk structure, we fit the data with models of increasing complexity from 2D Gaussian to radiative transfer, enabling comparison with other samples modeled in a similar way. The radiative transfer modeling gives disk masses that are significantly larger than what is obtained from the measured millimeter fluxes assuming optically thin emission, suggesting that the FUor disks are optically thick at this wavelength. In comparison with samples of regular Class II and Class I objects, the disks of FUors are typically a factor of 2.9-4.4 more massive and a factor of 1.5-4.7 smaller in size. A significant fraction of them (65-70%) may be gravitationally unstable., Comment: 34 pages, 8 tables, 29 figures, accepted for publication in the Astrophysical Journal Supplement Series
Published: 2021
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4. Directly Imaging Rocky Planets from the Ground

Author: Mazin, B., Artigau, É., Bailey, V., Baranec, C., Beichman, C., Benneke, B., Birkby, J., Brandt, T., Chilcote, J., Chun, M., Close, L., Currie, T., Crossfield, I., Dekany, R., Delorme, J. R., Dong, C., Dong, R., Doyon, R., Dressing, C., Fitzgerald, M., Fortney, J., Frazin, R., Gaidos, E., Guyon, O., Hashimoto, J., Hillenbrand, L., Howard, A., Jensen-Clem, R., Jovanovic, N., Kotani, T., Kawahara, H., Konopacky, Q., Knutson, H., Liu, M., Lu, J., Lozi, J., Macintosh, B., Males, J., Marley, M., Marois, C., Mawet, D., Meeker, S., Millar-Blanchaer, M., Mondal, S., Bose, S. N., Murakami, N., Murray-Clay, R., Narita, N., Pyo, T. S., Roberts, L., Ruane, G., Serabyn, G., Shields, A., Skemer, A., Simard, L., Stelter, D., Tamura, M., Troy, M., Vasisht, G., Wallace, J. K., Wang, J., and Wright, S.
Subjects: Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: Over the past three decades instruments on the ground and in space have discovered thousands of planets outside the solar system. These observations have given rise to an astonishingly detailed picture of the demographics of short-period planets, but are incomplete at longer periods where both the sensitivity of transit surveys and radial velocity signals plummet. Even more glaring is that the spectra of planets discovered with these indirect methods are either inaccessible (radial velocity detections) or only available for a small subclass of transiting planets with thick, clear atmospheres. Direct detection can be used to discover and characterize the atmospheres of planets at intermediate and wide separations, including non-transiting exoplanets. Today, a small number of exoplanets have been directly imaged, but they represent only a rare class of young, self-luminous super-Jovian-mass objects orbiting tens to hundreds of AU from their host stars. Atmospheric characterization of planets in the <5 AU regime, where radial velocity (RV) surveys have revealed an abundance of other worlds, is technically feasible with 30-m class apertures in combination with an advanced AO system, coronagraph, and suite of spectrometers and imagers. There is a vast range of unexplored science accessible through astrometry, photometry, and spectroscopy of rocky planets, ice giants, and gas giants. In this whitepaper we will focus on one of the most ambitious science goals --- detecting for the first time habitable-zone rocky (<1.6 R_Earth) exoplanets in reflected light around nearby M-dwarfs, Comment: 8 pages, 1 figure, Astro2020 Science White Paper
Published: 2019

5. Orbital characterization of GJ1108A system, and comparison of dynamical mass with model-derived mass for resolved binaries

Author: Mizuki, T., Kuzuhara, M., Mede, K., Schlieder, J. E., Janson, M., Brandt, T. D., Hirano, T., Narita, N., Wisniewski, J., Yamada, T., Biller, B., Bonnefoy, M., Carson, J. C., McElwain, M. W., Matsuo, T., Turner, E. L., Mayama, S., Akiyama, E., Uyama, T., Nakagawa, T., Kudo, T., Kusakabe, N., Hashimoto, J., Abe, L., Brander, W., Egner, S., Feldt, M., Goto, M., Grady, C. A., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S. S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Kandori, R., Knapp, G. R., Kwon, J., Miyama, S., Morino, J., Moro-Martin, A., Nishimura, T., Pyo, T., Serabyn, E., Suenaga, T., Suto, H., Suzuki, R., Takahashi, Y. H., Takami, M., Takato, N., Terada, H., Thalmann, C., Watanabe, M., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: We report an orbital characterization of GJ1108Aab that is a low-mass binary system in pre-main-sequence phase. Via the combination of astrometry using adaptive optics and radial velocity measurements, an eccentric orbital solution of $e$=0.63 is obtained, which might be induced by the Kozai-Lidov mechanism with a widely separated GJ1108B system. Combined with several observed properties, we confirm the system is indeed young. Columba is the most probable moving group, to which the GJ1108A system belongs, although its membership to the group has not been established. If the age of Columba is assumed for GJ1108A, the dynamical masses of both GJ1108Aa and GJ1108Ab ($M_{\rm dynamical,GJ1108Aa}=0.72\pm0.04 M_{\odot}$ and $M_{\rm dynamical,GJ1108Ab}=0.30\pm0.03 M_{\odot}$) are more massive than what an evolutionary model predicts based on the age and luminosities. We consider the discrepancy in mass comparison can attribute to an age uncertainty; the system is likely older than stars in Columba, and effects that are not implemented in classical models such as accretion history and magnetic activity are not preferred to explain the mass discrepancy. We also discuss the performance of the evolutionary model by compiling similar low-mass objects in evolutionary state based on the literature. Consequently, it is suggested that the current model on average reproduces the mass of resolved low-mass binaries without any significant offsets., Comment: Accepted in ApJ
Published: 2018
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6. SCExAO and GPI $YJH$ Band Photometry and Integral Field Spectroscopy of the Young Brown Dwarf Companion to HD 1160

Author: Garcia, Eugenio V., Currie, Thayne, Guyon, Olivier, Stassun, Keivan, Jovanovic, Nemanja, Lozi, Julien, Kudo, Tomoyuki, Doughty, Danielle, Schlieder, Joshua, Kwon, J., Uyama, T., Kuzuhara, M., Carson, J., Nakagawa, T., Hashimoto, J., Kusakabe, N., Abe, L., Brander, W., Brandt, T. D., Feldt, M., Goto, M., Grady, C., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K., Ishii, M., Iye, M., Janson, M., Kandori, R., Knapp, G., Matsuo, T., McElwain, M., Miyama, S., Morino, J. I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Serabyn, E., Suenaga, T., Suto, H., Suzuki, R., Takahashi, Y. H., Takami, H., Takato, N., Terada, H., Thalmann, C., Turner, E. L., Watanabe, M., Wisniewski, J., Yamada, T., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: We present high signal-to-noise ratio, precise $YJH$ photometry and $Y$ band (\gpiwave~$\mu$m) spectroscopy of HD 1160 B, a young substellar companion discovered from the Gemini NICI Planet Finding Campaign, using the Subaru Coronagraphic Extreme Adaptive Optics instrument and the Gemini Planet Imager. HD 1160 B has typical mid-M dwarf-like infrared colors and a spectral type of M5.5$^{+1.0}_{-0.5}$, where the blue edge of our $Y$ band spectrum rules out earlier spectral types. Atmospheric modeling suggests HD 1160 B having an effective temperature of 3000--3100 $K$, a surface gravity of log $g$ = 4--4.5, a radius of~\bestfitradius~$R_{\rm J}$, and a luminosity of log $L$/$L_{\odot} = -2.76 \pm 0.05$. Neither the primary's Hertzspring-Russell diagram position nor atmospheric modeling of HD 1160 B show evidence for a sub-solar metallicity. The interpretation of the HD 1160 B depends on which stellar system components are used to estimate an age. Considering HD 1160 A, B and C jointly, we derive an age of 80--125 Myr, implying that HD 1160 B straddles the hydrogen-burning limit (70--90 $M_{\rm J}$). If we consider HD 1160 A alone, younger ages (20--125 Myr) and a brown dwarf-like mass (35--90 $M_{\rm J}$) are possible. Interferometric measurements of the primary, a precise GAIA parallax, and moderate resolution spectroscopy can better constrain the system's age and how HD 1160 B fits within the context of (sub)stellar evolution., Comment: 50 pages, 6 Tables, 13 Figures; Accepted for publication in The Astrophysical Journal
Published: 2016
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7. SEEDS direct imaging of the RV-detected companion to V450 Andromedae, and characterization of the system

Author: Hełminiak, K. G., Kuzuhara, M., Mede, K., Brandt, T. D., Kandori, R., Suenaga, T., Kusakabe, N., Narita, N., Carson, J. C., Currie, T., Kudo, T., Hashimoto, J., Abe, L., Akiyama, E., Brandner, W., Feldt, M., Goto, M., Grady, C. A., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S. S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Janson, M., Knapp, G. R., Kwon, J., Matsuo, T., McElwain, M. W., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Ryu, T., Pyo, T. -S., Serabyn, E., Suto, H., Suzuki, R., Takahashi, Y. H., Takami, M., Takato, N., Terada, H., Thalmann, C., Turner, E. L., Watanabe, M., Wisniewski, J., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: We report the direct imaging detection of a low-mass companion to a young, moderately active star V450 And, that was previously identified with the radial velocity method. The companion was found in high-contrast images obtained with the Subaru Telescope equipped with the HiCIAO camera and AO188 adaptive optics system. From the public ELODIE and SOPHIE archives we extracted available high-resolution spectra and radial velocity (RV) measurements, along with RVs from the Lick planet search program. We combined our multi-epoch astrometry with these archival, partially unpublished RVs, and found that the companion is a low-mass star, not a brown dwarf, as previously suggested. We found the best-fitting dynamical masses to be $m_1=1.141_{-0.091}^{+0.037}$ and $m_2=0.279^{+0.023}_{-0.020}$ M$_\odot$. We also performed spectral analysis of the SOPHIE spectra with the iSpec code. The Hipparcos time-series photometry shows a periodicity of $P=5.743$ d, which is also seen in SOPHIE spectra as an RV modulation of the star A. We interpret it as being caused by spots on the stellar surface, and the star to be rotating with the given period. From the rotation and level of activity, we found that the system is $380^{+220}_{-100}$ Myr old, consistent with an isochrone analysis ($220^{+2120}_{-90}$ Myr). This work may serve as a test case for future studies of low-mass stars, brown dwarfs and exoplanets by combination of RV and direct imaging data., Comment: 15 pages, 9 figures, 7 tables, to appear in ApJ
Published: 2016
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8. Spiral Structure and Differential Dust Size Distribution in the LkHa 330 Disk

Author: Akiyama, E., Hashimoto, J., Liu, H. B., Li, J. I -H., Bonnefoy, M., Dong, R., Hasegawa, Y., Henning, T., Sitko, M. L., Janson, M., Feldt, M., Wisniewski, J., Kudo, T., Kusakabe, N., Tsukagoshi, T., Momose, M., Muto, T., Taki, T., Kuzuhara, M., Mayama, S., Takami, M., Ohashi, N., Grady, C. A., Kwon, J., Thalmann, C., Abe, L., Brandner, W., Brandt, T. D., Carson, J. C., Egner, S., Goto, M., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S. S., Hodapp, K. W., Ishii, M., Iye, M., Knapp, G. R., Kandori, R., Matsuo, T., McElwain, M. W., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Serabyn, E., Suenaga, T., Suto, H., Suzuki, R., Takahashi, Y. H., Takato, N., Terada, H., Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Earth and Planetary Astrophysics
Abstract: Dust trapping accelerates the coagulation of dust particles, and thus it represents an initial step toward the formation of planetesimals. We report $H$-band (1.6 um) linear polarimetric observations and 0.87 mm interferometric continuum observations toward a transitional disk around LkHa 330. As results, a pair of spiral arms were detected in the $H$-band emission and an asymmetric (potentially arm-like) structure was detected in the 0.87 mm continuum emission. We discuss the origin of the spiral arm and the asymmetric structure, and suggest that a massive unseen planet is the most plausible explanation. The possibility of dust trapping and grain growth causing the asymmetric structure was also investigated through the opacity index (beta) by plotting the observed SED slope between 0.87 mm from our SMA observation and 1.3 mm from literature. The results imply that grains are indistinguishable from ISM-like dust in the east side ($beta = 2.0 pm 0.5$), but much smaller in the west side $beta = 0.7^{+0.5}_{-0.4}$, indicating differential dust size distribution between the two sides of the disk. Combining the results of near-infrared and submillimeter observations, we conjecture that the spiral arms exist at the upper surface and an asymmetric structure resides in the disk interior. Future observations at centimeter wavelengths and differential polarization imaging in other bands (Y to K) with extreme AO imagers are required to understand how large dust grains form and to further explore the dust distribution in the disk., Comment: 10 pages, 4 figures, AJ accepted for publication
Published: 2016
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9. Polarimetry and flux distribution in the debris disk around HD 32297

Author: Asensio-Torres, R., Janson, M., Hashimoto, J., Thalmann, C., Currie, T., Buenzli, E., Kudo, T., Kuzuhara, M., Kusakabe, N., Abe, L., Akiyama, E., Brandner, W., Brandt, T. D., Carson, J., Egner, S., Feldt, M., Goto, M., Grady, C., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K., Ishii, M., Iye, M., Kandori, R., Knapp, G., Kwon, J., Matsuo, T., McElwain, M., Mayama, S., Miyama, S., Morino, J., Moro-Martin, A., Nishimura, T., Pyo, T., Serabyn, E., Suenaga, T., Suto, H., Suzuki, R., Takahashi, Y., Takami, M., Takato, N., Terada, H., Turner, E., Watanabe, M., Wisniewski, J., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Earth and Planetary Astrophysics
Abstract: We present high-contrast angular differential imaging (ADI) observations of the debris disk around HD 32297 in H-band, as well as the first polarimetric images for this system in polarized differential imaging (PDI) mode with Subaru/HICIAO. In ADI, we detect the nearly edge-on disk at >5sigma levels from ~0.45 arcsec to ~1.7 arcsec (50-192 AU) from the star and recover the spine deviation from the midplane already found in previous works. We also find for the first time imaging and surface brightness (SB) indications for the presence of a gapped structure on both sides of the disk at distances of ~0.75 arcsec (NE side) and ~0.65 arcsec (SW side). Global forward-modelling work delivers a best-fit model disk and well-fitting parameter intervals that essentially match previous results, with high-forward scattering grains and a ring located at 110 AU. However, this single ring model cannot account for the gapped structure seen in our SB profiles. We create simple double ring models and achieve a satisfactory fit with two rings located at 60 and 95 AU, respectively, low-forward scattering grains and very sharp inner slopes. In polarized light we retrieve the disk extending from ~0.25-1.6 arcsec, although the central region is quite noisy and high S/N are only found in the range ~0.75-1.2 arcsec. The disk is polarized in the azimuthal direction, as expected, and the departure from the midplane is also clearly observed. Evidence for a gapped scenario is not found in the PDI data. We obtain a linear polarization degree of the grains that increases from ~10% at 0.55 arcsec to ~25% at 1.6 arcsec. The maximum is found at scattering angles of ~90degrees, either from the main components of the disk or from dust grains blown out to larger radii., Comment: Accepted for publication in Astronomy and Astrophysics
Published: 2016
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10. Discovery of a Disk Gap Candidate at 20 AU in TW Hydrae

Author: Akiyama, E., Muto, T., Kusakabe, N., Kataoka, A., Hashimoto, J., Tsukagoshi, T., Kwon, J., Kudo, T., Kandori, R., Grady, C. A., Takami, M., Janson, M., Kuzuhara, M., Henning, T., Sitko, M. L., Mayama, J. C. Carson S., Currie, T., Thalmann, C., Wisniewski, J., Momose, M., Ohashi, N., Abe, L., Brandner, W., Brandt, T. D., Egner, S., Feldt, M., Goto, M., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Hodapp, K. W., Ishi, M., Iye, M., Knapp, G. R., Matsuo, T., McElwain, M. W., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Serabyn, G., Suenaga, T., Suto, H., Suzuki, R., Takahashi, Y. H., Takato, N., Terada, H., Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Earth and Planetary Astrophysics
Abstract: We present a new Subaru/HiCIAO high-contrast H-band polarized intensity (PI) image of a nearby transitional disk associated with TW Hydrae. The scattered light from the disk was detected from 0.2" to 1.5" (11 - 81 AU) and the PI image shows a clear axisymmetric depression in polarized intensity at ~ 0.4" (~ 20 AU) from the central star, similar to the ~ 80 AU gap previously reported from HST images. Azimuthal polarized intensity profile also shows the disk beyond 0.2" is almost axisymmetric. We discuss two possible scenarios explaining the origin of the polarized intensity depression: 1) a gap structure may exist at ~ 20 AU from the central star because of shallow slope seen in the polarized intensity profile, and 2) grain growth may be occurring in the inner region of the disk. Multi-band observations at NIR and millimeter/sub-millimeter wavelengths play a complementary role in investigating dust opacity and may help reveal the origin of the gap more precisely., Comment: 8 pages, 2 figures, ApJL accepted for publication
Published: 2015
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11. The Structure of Pre-transitional Protoplanetary Disks. II. Azimuthal Asymmetries, Different Radial Distributions of Large and Small Dust Grains in PDS~70

Author: Hashimoto, J., Tsukagoshi, T., Brown, J. M., Dong, R., Muto, Mr. Takayuki, Zhu, Dr. Zhaohuan, Wisniewski, Dr. John P., Ohashi, N., kudo, T., Kusakabe, N., Abe, L., Akiyama, E., Brandner, Wolfgang, Brandt, T., Carson, J., Currie, Dr. Thayne, Egner, S., Feldt, M., Grady, C. A., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Henning, Thomas, Hodapp, K., Ishii, M., Iye, Dr. Masanori, Janson, M., Kandori, R., Knapp, G., Kuzuhara, M., Kwon, J., Matsuo, T., McElwain, M. W., Mayama, S., Mede, K., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Serabyn, Dr. Gene, Suenaga, T., Suto, H., Suzuki, R., Takahashi, Y., Takami, M., Takato, N., Terada, H., Thalmann, Dr. Christian, Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: The formation scenario of a gapped disk, i.e., transitional disk, and its asymmetry is still under debate. Proposed scenarios such as disk-planet interaction, photoevaporation, grain growth, anticyclonic vortex, eccentricity, and their combinations would result in different radial distributions of the gas and the small (sub-$\mu$m size) and large (millimeter size) dust grains as well as asymmetric structures in a disk. Optical/near-infrared (NIR) imaging observations and (sub-)millimeter interferometry can trace small and large dust grains, respectively; therefore multi-wavelength observations could help elucidate the origin of complicated structures of a disk. Here we report SMA observations of the dust continuum at 1.3~mm and $^{12}$CO~$J=2\rightarrow1$ line emission of the pre-transitional protoplanetary disk around the solar-mass star PDS~70. PDS~70, a weak-lined T Tauri star, exhibits a gap in the scattered light from its disk with a radius of $\sim$65~AU at NIR wavelengths. However, we found a larger gap in the disk with a radius of $\sim$80~AU at 1.3~mm. Emission from all three disk components (the gas and the small and large dust grains) in images exhibits a deficit in brightness in the central region of the disk, in particular, the dust-disk in small and large dust grains has asymmetric brightness. The contrast ratio of the flux density in the dust continuum between the peak position to the opposite side of the disk reaches 1.4. We suggest the asymmetries and different gap-radii of the disk around PDS~70 are potentially formed by several (unseen) accreting planets inducing dust filtration., Comment: Accepted by ApJ
Published: 2014
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12. A Statistical Analysis of SEEDS and Other High-Contrast Exoplanet Surveys: Massive Planets or Low-Mass Brown Dwarfs?

Author: Brandt, Timothy D., McElwain, Michael W., Turner, Edwin L., Mede, Kyle, Spiegel, David S., Kuzuhara, Masayuki, Schlieder, Joshua E., Wisniewski, John P., Abe, L., Biller, B., Brandner, W., Carson, J., Currie, T., Egner, S., Feldt, M., Golota, T., Goto, M., Grady, C. A., Guyon, O., Hashimoto, J., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K. W., Inutsuka, S., Ishii, M., Iye, M., Janson, M., Kandori, R., Knapp, G. R., Kudo, T., Kusakabe, N., Kwon, J., Matsuo, T., Miyama, S., Morino, J. -I., Moro-Martín, A., Nishimura, T., Pyo, T. -S., Serabyn, E., Suto, H., Suzuki, R., Takami, M., Takato, N., Terada, H., Thalmann, C., Tomono, D., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: We conduct a statistical analysis of a combined sample of direct imaging data, totalling nearly 250 stars. The stars cover a wide range of ages and spectral types, and include five detections ($\kappa$ And b, two $\sim$60 M$_{\rm J}$ brown dwarf companions in the Pleiades, PZ Tel B, and CD$-$35 2722B). For some analyses we add a currently unpublished set of SEEDS observations, including the detections GJ 504b and GJ 758B. We conduct a uniform, Bayesian analysis of all stellar ages using both membership in a kinematic moving group and activity/rotation age indicators. We then present a new statistical method for computing the likelihood of a substellar distribution function. By performing most of the integrals analytically, we achieve an enormous speedup over brute-force Monte Carlo. We use this method to place upper limits on the maximum semimajor axis of the distribution function derived from radial-velocity planets, finding model-dependent values of $\sim$30--100 AU. Finally, we model the entire substellar sample, from massive brown dwarfs to a theoretically motivated cutoff at $\sim$5 M$_{\rm Jup}$, with a single power law distribution. We find that $p(M, a) \propto M^{-0.65\pm0.60} a^{-0.85\pm0.39}$ (1$\sigma$ errors) provides an adequate fit to our data, with 1.0--3.1\% (68\% confidence) of stars hosting 5--70 $M_{\rm Jup}$ companions between 10 and 100 AU. This suggests that many of the directly imaged exoplanets known, including most (if not all) of the low-mass companions in our sample, formed by fragmentation in a cloud or disk, and represent the low-mass tail of the brown dwarfs., Comment: ApJ in press, replaced with accepted version. Methodology clarified, conclusions mostly unchanged
Published: 2014
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13. Direct Imaging Detection of Methane in the Atmosphere of GJ 504 b

Author: Janson, M., Brandt, T., Kuzuhara, M., Spiegel, D., Thalmann, C., Currie, T., Bonnefoy, M., Zimmerman, N., Sorahana, S., Kotani, T., Schlieder, J., Hashimoto, J., Kudo, T., Kusakabe, N., Abe, L., Brandner, W., Carson, J., Egner, S., Feldt, M., Goto, M., Grady, C., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K., Ishii, M., Iye, M., Kandori, R., Knapp, G., Kwon, J., Matsuo, T., McElwain, M., Mede, K., Miyama, S., Morino, J. -I., Moro-Martin, A., Nakagawa, T., Nishimura, T., Pyo, T. -S., Serabyn, E., Suenaga, T., Suto, H., Suzuki, R., Takahashi, Y., Takami, M., Takato, N., Terada, H., Tomono, D., Turner, E., Watanabe, M., Wisniewski, J., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract: Most exoplanets detected by direct imaging so far have been characterized by relatively hot (> ~1000 K) and cloudy atmospheres. A surprising feature in some of their atmospheres has been a distinct lack of methane, possibly implying non-equilibrium chemistry. Recently, we reported the discovery of a planetary companion to the Sun-like star GJ 504 using Subaru/HiCIAO within the SEEDS survey. The planet is substantially colder (<600 K) than previously imaged planets, and has indications of fewer clouds, which implies that it represents a new class of planetary atmospheres with expected similarities to late T-type brown dwarfs in the same temperature range. If so, one might also expect the presence of significant methane absorption, which is characteristic of such objects. Here, we report the detection of deep methane absorption in the atmosphere of GJ 504 b, using the Spectral Differential Imaging mode of HiCIAO to distinguish the absorption feature around 1.6 um. We also report updated JHK photometry based on new Ks-band data and a re-analysis of the existing data. The results support the notion that GJ 504 b has atmospheric properties distinct from other imaged exoplanets, and will become a useful reference object for future planets in the same temperature range., Comment: 9 pages, 4 figures, accepted for publication in ApJ Letters
Published: 2013
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14. Characterization of the gaseous companion {\kappa} Andromedae b: New Keck and LBTI high-contrast observations

Author: Bonnefoy, M., Currie, T., Marleau, G. -D., Schlieder, J. E., Wisniewski, J., Carson, J., Covey, K. R., Henning, T., Biller, B., Hinz, P., Klahr, H., Boyer, A. N. Marsh, Zimmerman, N., Janson, M., McElwain, M., Mordasini, C., Skemer, A., Bailey, V., Defrère, D., Thalmann, C., Skrutskie, M., Allard, F., Homeier, D., Tamura, M., Feldt, M., Cumming, A., Grady, C., Brandner, W., Kandori, R., Kuzuhara, M., Fukagawa, M., Kwon, J., Kudo, T., Hashimoto, J., Kusakabe, N., Abe, L., Brandt, T., Egner, S., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Hodapp, K., Ishii, M., Iye, M., Knapp, G., Matsuo, T., Mede, K., Miyama, M., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T., Serabyn, E., Suenaga, T., Suto, H., Suzuki, R., Takahashi, Takami, M., Takato, N., Terada, H., Tomono, D., Turner, E., Watanabe, M., Yamada, T., Takami, H., and Usuda, T.
Subjects: Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract: We previously reported the direct detection of a low mass companion at a projected separation of 55+-2 AU around the B9 type star {\kappa} Andromedae. The properties of the system (mass ratio, separation) make it a benchmark for the understanding of the formation and evolution of gas giant planets and brown dwarfs on wide-orbits. We present new angular differential imaging (ADI) images of the Kappa Andromedae system at 2.146 (Ks), 3.776 (L'), 4.052 (NB 4.05) and 4.78 {\mu}m (M') obtained with Keck/NIRC2 and LBTI/LMIRCam, as well as more accurate near-infrared photometry of the star with the MIMIR instrument. We derive a more accurate J = 15.86 +- 0.21, H = 14.95 +- 0.13, Ks = 14.32 +- 0.09 mag for {\kappa} And b. We redetect the companion in all our high contrast observations. We confirm previous contrasts obtained at Ks and L' band. We derive NB 4.05 = 13.0 +- 0.2 and M' = 13.3 +- 0.3 mag and estimate Log10(L/Lsun) = -3.76 +- 0.06. We build the 1-5 microns spectral energy distribution of the companion and compare it to seven PHOENIX-based atmospheric models in order to derive Teff = 1900+100-200 K. Models do not set constrains on the surface gravity. ``Hot-start" evolutionary models predict masses of 14+25-2 MJup based on the luminosity and temperature estimates, and considering a conservative age range for the system (30+120-10 Myr). ``warm-start" evolutionary tracks constrain the mass to M >= 11 MJup. Therefore, the mass of {\kappa} Andromedae b mostly falls in the brown-dwarf regime, due to remaining uncertainties in age and mass-luminosity models. According to the formation models, disk instability in a primordial disk could account for the position and a wide range of plausible masses of {\kappa} And b., Comment: 20 pages, 16 figures, accepted for publication in Astronomy and Astrophysics on August 6, 2013
Published: 2013
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15. Direct Imaging of a Cold Jovian Exoplanet in Orbit around the Sun-like Star GJ 504

Author: Kuzuhara, M., Tamura, M., Kudo, T., Janson, M., Kandori, R., Brandt, T. D., Thalmann, C., Spiegel, D., Biller, B., Carson, J., Hori, Y., Suzuki, R., Burrows, A., Henning, T., Turner, E. L., McElwain, M. W., Moro-Martin, A., Suenaga, T., Takahashi, Y. H., Kwon, J., Lucas, P., Abe, L., Brandner, W., Egner, S., Feldt, M., Fujiwara, H., Goto, M., Grady, C. A., Guyon, O., Hashimoto, J., Hayano, Y., Hayashi, M., Hayashi, S. S., Hodapp, K. W., Ishii, M., Iye, M., Knapp, G. R., Matsuo, T., Mayama, S., Miyama, S., Morino, J. -I., Nishikawa, J., Nishimura, T., Kotani, T., Kusakabe, N., Pyo, T. -S., Serabyn, E., Suto, H., Takami, M., Takato, N., Terada, H., Tomono, D., Watanabe, M., Wisniewski, J. P., Yamada, T., Takami, H., and Usuda, T.
Subjects: Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Galaxy Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract: Several exoplanets have recently been imaged at wide separations of >10 AU from their parent stars. These span a limited range of ages (<50 Myr) and atmospheric properties, with temperatures of 800--1800 K and very red colors (J - H > 0.5 mag), implying thick cloud covers. Furthermore, substantial model uncertainties exist at these young ages due to the unknown initial conditions at formation, which can lead to an order of magnitude of uncertainty in the modeled planet mass. Here, we report the direct imaging discovery of a Jovian exoplanet around the Sun-like star GJ 504, detected as part of the SEEDS survey. The system is older than all other known directly-imaged planets; as a result, its estimated mass remains in the planetary regime independent of uncertainties related to choices of initial conditions in the exoplanet modeling. Using the most common exoplanet cooling model, and given the system age of 160 [+350, -60] Myr, GJ 504 b has an estimated mass of 4 [+4.5, -1.0] Jupiter masses, among the lowest of directly imaged planets. Its projected separation of 43.5 AU exceeds the typical outer boundary of ~30 AU predicted for the core accretion mechanism. GJ 504 b is also significantly cooler (510 [+30, -20] K) and has a bluer color (J-H = -0.23 mag) than previously imaged exoplanets, suggesting a largely cloud-free atmosphere accessible to spectroscopic characterization. Thus, it has the potential of providing novel insights into the origins of giant planets, as well as their atmospheric properties., Comment: 20 pages, 12 figures, Accepted for publication in ApJ. Minor updates from the version 1
Published: 2013
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16. The Moving Group Targets of the SEEDS High-Contrast Imaging Survey of Exoplanets and Disks: Results and Observations from the First Three Years

Author: Brandt, Timothy D., Kuzuhara, Masayuki, McElwain, Michael W., Schlieder, Joshua E., Wisniewski, John P., Turner, Edwin L., Carson, J., Matsuo, T., Biller, B., Bonnefoy, M., Dressing, C., Janson, M., Knapp, G. R., Moro-Martín, A., Thalmann, C., Kudo, T., Kusakabe, N., Hashimoto, J., Abe, L., Brandner, W., Currie, T., Egner, S., Feldt, M., Golota, T., Goto, M., Grady, C. A., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Kandori, R., Kwon, J., Mede, K., Miyama, S., Morino, J. -I., Nishimura, T., Pyo, T. -S., Serabyn, E., Suenaga, T., Suto, H., Suzuki, R., Takami, M., Takahashi, Y., Takato, N., Terada, H., Tomono, D., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Earth and Planetary Astrophysics
Abstract: We present results from the first three years of observations of moving group targets in the SEEDS high-contrast imaging survey of exoplanets and disks using the Subaru telescope. We achieve typical contrasts of ~10^5 at 1" and ~10^6 beyond 2" around 63 proposed members of nearby kinematic moving groups. We review each of the kinematic associations to which our targets belong, concluding that five, \beta Pictoris (~20 Myr), AB Doradus (~100 Myr), Columba (~30 Myr), Tucana-Horogium (~30 Myr), TW Hydrae (~10 Myr), are sufficiently well-defined to constrain the ages of individual targets. Somewhat less than half of our targets are high-probability members of one of these moving groups. For all of our targets, we combine proposed moving group membership with other age indicators where available, including Ca II HK emission, X-ray activity, and rotation period, to produce a posterior probability distribution of age. SEEDS observations discovered a substellar companion to one of our targets, \kappa And, a late B star. We do not detect any other substellar companions, but do find seven new close binary systems, of which one still needs to be confirmed. A detailed analysis of the statistics of this sample, and of the companion mass constraints given our age probability distributions and exoplanet cooling models, will be presented in a forthcoming paper., Comment: 26 pages, 4 figures, 6 tables. Replaced with published ApJ version
Published: 2013
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17. Imaging Discovery of the Debris Disk Around HIP 79977

Author: Thalmann, C., Janson, M., Buenzli, E., Brandt, T. D., Wisniewski, J. P., Dominik, C., Carson, J., McElwain, M. W., Currie, T., Knapp, G. R., Moro-Martín, A., Usuda, T., Abe, L., Brandner, W., Egner, S., Feldt, M., Golota, T., Goto, M., Guyon, O., Hashimoto, J., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Kandori, R., Kudo, T., Kusakabe, N., Kuzuhara, M., Kwon, J., Matsuo, T., Mayama, S., Miyama, S., Morino, J. -I., Nishimura, T., Pyo, T. -S., Serabyn, E., Suto, H., Suzuki, R., Takami, M., Takato, N., Terada, H., Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: We present Subaru/HiCIAO H-band high-contrast images of the debris disk around HIP 79977, whose pres- ence was recently inferred from an infrared excess. Our images resolve the disk for the first time, allowing characterization of its shape, size, and dust grain properties. We use angular differential imaging (ADI) to reveal the disk geometry in unpolarized light out to a radius of ~2", as well as polarized differential imaging (PDI) to measure the degree of scattering polarization out to ~1.5". In order to strike a favorable balance between suppression of the stellar halo and conservation of disk flux, we explore the application of principal component analysis (PCA) to both ADI and reference star subtraction. This allows accurate forward modeling of the effects of data reduction on simulated disk images, and thus direct comparison with the imaged disk. The resulting best-fit values and well-fitting intervals for the model parameters are a surface brightness power-law slope of S_out = -3.2 [-3.6,-2.9], an inclination of i = 84{\deg} [81{\deg},86{\deg}], a high Henyey-Greenstein forward-scattering parameter of g = 0.45 [0.35, 0.60], and a non-significant disk-star offset of u = 3.0 [-1.5, 7.5] AU = 24 [-13, 61] mas along the line of nodes. Furthermore, the tangential linear polarization along the disk rises from ~10% at 0.5" to ~45% at 1.5". These measurements paint a consistent picture of a disk of dust grains produced by collisional cascades and blown out to larger radii by stellar radiation pressure., Comment: 6 pages, 4 figures, 1 table. Accepted for publication in ApJ Letters
Published: 2013
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18. Spiral Arms in the Asymmetrically Illuminated Disk of MWC 758 and Constraints on Giant Planets

Author: Grady, C. A., Muto, T., Hashimoto, J., Fukagawa, M., Currie, T., Biller, B., Thalmann, C., Sitko, M. L., Russell, R., Wisniewski, J., Dong, R., Kwon, J., Sai, S., Hornbeck, J., Schneider, G., Hines, D., Moro-Martin, A., Feldt, M., Henning, Th., Pott, J. -U., Bonnefoy, M., Bouwman, J., Lacour, S., Mueller, A., Juhasz, A., Crida, A., Chauvin, G., Andrews, S., Wilner, D., Kraus, A., Dahm, S., Robitaille, T., Jang-Condell, H., Abe, L., Akiyama, E., Brandner, W., Brandt, T., Carson, J., Egner, S., Follette, K. B., Goto, M., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Hodapp, K., Ishii, M., Iye, M., Janson, M., Kandori, R., Knapp, G., Kudo, T., Kusakabe, N., Kuzuhara, M., Mayama, S., McElwain, M., Matsuo, T., Miyama, S., Morino, J. -I., Nishimura, T., Pyo, T. -S., Serabyn, G., Suto, H., Suzuki, R., Takami, M., Takato, N., Terada, H., Tomono, D., Turner, E., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract: We present the first near-IR scattered light detection of the transitional disk associated with the Herbig Ae star MWC 758 using data obtained as part of the Strategic Exploration of Exoplanets and Disks with Subaru, and 1.1 micron HST/NICMOS data. While sub-millimeter studies suggested there is a dust-depleted cavity with r=0.35, we find scattered light as close as 0.1 (20-28 AU) from the star, with no visible cavity at H, K', or Ks. We find two small-scaled spiral structures which asymmetrically shadow the outer disk. We model one of the spirals using spiral density wave theory, and derive a disk aspect ratio of h ~ 0.18, indicating a dynamically warm disk. If the spiral pattern is excited by a perturber, we estimate its mass to be 5+3,-4 Mj, in the range where planet filtration models predict accretion continuing onto the star. Using a combination of non-redundant aperture masking data at L' and angular differential imaging with Locally Optimized Combination of Images at K' and Ks, we exclude stellar or massive brown dwarf companions within 300 mas of the Herbig Ae star, and all but planetary mass companions exterior to 0.5. We reach 5-sigma contrasts limiting companions to planetary masses, 3-4 MJ at 1.0 and 2 MJ at 1.55 using the COND models. Collectively, these data strengthen the case for MWC 758 already being a young planetary system., Comment: 45 pages, 9 figures; ApJ in press
Published: 2012
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19. Direct Imaging Discovery of a `Super-Jupiter' Around the late B-Type Star Kappa And

Author: Carson, J., Thalmann, C., Janson, M., Kozakis, T., Bonnefoy, M., Biller, B., Schlieder, J., Currie, T., McElwain, M., Goto, M., Henning, T., Brandner, W., Feldt, M., Kandori, R., Kuzuhara, M., Stevens, L., Wong, P., Gainey, K., Fukagawa, M., Kuwada, Y., Brandt, T., Kwon, J., Abe, L., Egner, S., Grady, C., Guyon, O., Hashimoto, J., Hayano, Y., Hayashi, M., Hayashi, S., Hodapp, K., Ishii, M., Iye, M., Knapp, G., Kudo, T., Kusakabe, N., Matsuo, T., Miyama, S., Morino, J., Moro-Martin, A., Nishimura, T., Pyo, T., Serabyn, E., Suto, H., Suzuki, R., Takami, M., Takato, N., Terada, H., Turner, E., Watanabe, M., Wisniewski, J., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: We present the direct imaging discovery of an extrasolar planet, or possible low-mass brown dwarf, at a projected separation of 55 +/- 2 AU (1.058 +/- 0.007 arcsec) from the B9-type star Kappa And. The planet was detected with Subaru/HiCIAO during the SEEDS survey, and confirmed as a bound companion via common proper motion measurements. Observed near-infrared magnitudes of J = 16.3 +/- 0.3, H = 15.2 +/- 0.2, Ks = 14.6 +/- 0.4, and L' = 13.12 +/- 0.09 indicate a temperature of ~1700 K. The galactic kinematics of the host star are consistent with membership in the Columba association, implying a corresponding age of 30 +20 -10 Myr. The system age, combined with the companion photometry, points to a model-dependent companion mass ~12.8 MJup. The host star's estimated mass of 2.4-2.5 Msun places it among the most massive stars ever known to harbor an extrasolar planet or low-mass brown dwarf. While the mass of the companion is close to the deuterium burning limit, its mass ratio, orbital separation, and likely planet-like formation scenario imply that it may be best defined as a `Super-Jupiter' with properties similar to other recently discovered companions to massive stars., Comment: Accepted for publication in Astrophysical Journal Letters. 25 pages, 4 figures, 1 table
Published: 2012
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20. Subaru Imaging of Asymmetric Features in a Transitional Disk in Upper Scorpius

Author: Mayama, S., Hashimoto, J., Muto, T., Tsukagoshi, T., Kusakabe, N., Kuzuhara, M., Takahashi, Y., Kudo, T., Dong, R., Fukagawa, M., Takami, M., Momose, M., Wisniewski, J. P., Follette, K., Abe, L., Akiyama, E., Brandner, W., Brandt, T., Carson, J., Egner, S., Feldt, M., Goto, M., Grady, C. A., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Janson, M., Kandori, R., Kwon, J., Knapp, G. R., Matsuo, T., McElwain, M. W., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Serabyn, E., Suto, H., Suzuki, R., Takato, N., Terada, H., Thalmann, C., Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics, Physics - Space Physics
Abstract: We report high-resolution (0.07 arcsec) near-infrared polarized intensity images of the circumstellar disk around the star 2MASS J16042165-2130284 obtained with HiCIAO mounted on the Subaru 8.2 m telescope. We present our $H$-band data, which clearly exhibits a resolved, face-on disk with a large inner hole for the first time at infrared wavelengths. We detect the centrosymmetric polarization pattern in the circumstellar material as has been observed in other disks. Elliptical fitting gives the semimajor axis, semiminor axis, and position angle (P.A.) of the disk as 63 AU, 62 AU, and -14 $^{\circ}$, respectively. The disk is asymmetric, with one dip located at P.A.s of $\sim85^{\circ}$. Our observed disk size agrees well with a previous study of dust and CO emission at submillimeter wavelength with Submillimeter Array. Hence, the near-infrared light is interpreted as scattered light reflected from the inner edge of the disk. Our observations also detect an elongated arc (50 AU) extending over the disk inner hole. It emanates at the inner edge of the western side of the disk, extending inward first, then curving to the northeast. We discuss the possibility that the inner hole, the dip, and the arc that we have observed may be related to the existence of unseen bodies within the disk., Comment: 21 pages, 3 figures, published 2012 November 7 by ApJL, typo corrected
Published: 2012
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21. New Techniques for High-Contrast Imaging with ADI: the ACORNS-ADI SEEDS Data Reduction Pipeline

Author: Brandt, Timothy D., McElwain, Michael W., Turner, Edwin L., Abe, L., Brandner, W., Carson, J., Egner, S., Feldt, M., Golota, T., Goto, M., Grady, C. A., Guyon, O., Hashimoto, J., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Janson, M., Kandori, R., Knapp, G. R., Kudo, T., Kusakabe, N., Kuzuhara, M., Kwon, J., Matsuo, T., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Serabyn, E., Suto, H., Suzuki, R., Takami, M., Takato, N., Terada, H., Thalmann, C., Tomono, D., Watanabe, M., Wisniewski, J. P., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: We describe Algorithms for Calibration, Optimized Registration, and Nulling the Star in Angular Differential Imaging (ACORNS-ADI), a new, parallelized software package to reduce high-contrast imaging data, and its application to data from the SEEDS survey. We implement several new algorithms, including a method to register saturated images, a trimmed mean for combining an image sequence that reduces noise by up to ~20%, and a robust and computationally fast method to compute the sensitivity of a high-contrast observation everywhere on the field-of-view without introducing artificial sources. We also include a description of image processing steps to remove electronic artifacts specific to Hawaii2-RG detectors like the one used for SEEDS, and a detailed analysis of the Locally Optimized Combination of Images (LOCI) algorithm commonly used to reduce high-contrast imaging data. ACORNS-ADI is written in python. It is efficient and open-source, and includes several optional features which may improve performance on data from other instruments. ACORNS-ADI requires minimal modification to reduce data from instruments other than HiCIAO. It is freely available for download at www.github.com/t-brandt/acorns-adi under a BSD license., Comment: 15 pages, 9 figures, accepted to ApJ. Replaced with accepted version; mostly minor changes. Software updated
Published: 2012
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22. High-Resolution Near-Infrared Polarimetry of a Circumstellar Disk around UX Tau A

Author: Tanii, Ryoko, Itoh, Yoichi, Kudo, Tomoyuki, Hioki, Tomonori, Oasa, Yumiko, Gupta, Ranjan, Sen, A. K., Wisniewski, J. P., Muto, T., Grady, C. A., Hashimoto, J., Fukagawa, M., Mayama, S., Hornbeck, J., Sitko, M., Russell, R., Werren, C., Cure, M., Currie, T., Ohashi, N., Okamoto, Y., Momose, M., Honda, M., Inutsuka, S. -I., Takeuchi, T., Dong, R., Abe, L., Brandner, W., Brandt, T., Carson, J., Egner, S., Feldt, M., Fukue, T., Goto, M., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S. S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Janson, M., Kandori, R., Knapp, G. P., Kusakabe, N., Kuzuhara, M., Matsuo, T., McElwain, M. W., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Serabyn, G., Suto, H., Suzuki, R., Takami, M., Takato, N., Terada, H., Thalmann, C., Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics
Abstract: We present H-band polarimetric imagery of UX Tau A taken with HiCIAO/AO188 on the Subaru Telescope. UX Tau A has been classified as a pre-transitional disk object, with a gap structure separating its inner and outer disks. Our imagery taken with the 0.15 (21 AU) radius coronagraphic mask has revealed a strongly polarized circumstellar disk surrounding UX Tau A which extends to 120 AU, at a spatial resolution of 0.1 (14 AU). It is inclined by 46 \pm 2 degree as the west side is nearest. Although SED modeling and sub-millimeter imagery suggested the presence of a gap in the disk, with the inner edge of the outer disk estimated to be located at 25 - 30 AU, we detect no evidence of a gap at the limit of our inner working angle (23 AU) at the near-infrared wavelength. We attribute the observed strong polarization (up to 66 %) to light scattering by dust grains in the disk. However, neither polarization models of the circumstellar disk based on Rayleigh scattering nor Mie scattering approximations were consistent with the observed azimuthal profile of the polarization degrees of the disk. Instead, a geometric optics model of the disk with nonspherical grains with the radii of 30 micron meter is consistent with the observed profile. We suggest that the dust grains have experienced frequent collisional coagulations and have grown in the circumstellar disk of UX Tau A., Comment: 20 pages, 8 figures, and 1 table. accepted to PASJ
Published: 2012
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23. High-Contrast NIR Polarization Imaging of MWC480

Author: Kusakabe, N., Grady, C. A., Sitko, M. L., Hashimoto, J., Kudo, T., Fukagawa, M., Muto, T., Wisniewski, J. P., Min, M., Mayama, S., Werren, C., Day, A. N., Beerman, L. C., Lynch, D. K., Russell, R. W., Brafford, S. M., Kuzuhara, M., Brandt, T. D., Abe, L., Brandner, W., Carson, J., Egner, S., Feldt, M., Goto, M., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S. S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Janson, M., Kandori, R., Knapp, G. R., Matsuo, T., McElwain, M. W., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Suto, H., Suzuki, R., Takami, M., Takato, N., Terada, H., Thalmann, C., Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics
Abstract: One of the key predictions of modeling from the IR excess of Herbig Ae stars is that for protoplanetary disks, where significant grain growth and settling has occurred, the dust disk has flattened to the point that it can be partially or largely shadowed by the innermost material at or near the dust sublimation radius. When the self-shadowing has already started, the outer disk is expected to be detected in scattered light only in the exceptional cases that the scale height of the dust disk at the sublimation radius is smaller than usual. High-contrast imaging combined with the IR spectral energy distribution allow us to measure the degree of flattening of the disk, as well as to determine the properties of the outer disk. We present polarimetric differential imaging in $H$ band obtained with Subaru/HiCIAO of one such system, MWC 480. The HiCIAO data were obtained at a historic minimum of the NIR excess. The disk is detected in scattered light from 0\farcs2-1\farcs0 (27.4-137AU). Together with the marginal detection of the disk from 1998 February 24 by HST/NICMOS, our data constrain the opening half angle for the disk to lie between 1.3$\leq\theta\leq 2.2^\circ$. When compared with similar measures in CO for the gas disk from the literature, the dust disk subtends only $\sim$30% of the gas disk scale height (H/R$\sim$0.03). Such a dust disk is a factor of 5-7 flatter than transitional disks, which have structural signatures that giant planets have formed., Comment: 21 pages, 6 figures, 1 table, ApJ accepted 2012-05-06
Published: 2012
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24. The missing cavities in the SEEDS polarized scattered light images of transitional protoplanetary disks: a generic disk model

Author: Dong, R., Rafikov, R., Zhu, Z., Hartmann, L., Whitney, B., Brandt, T., Muto, T., Hashimoto, J., Grady, C., Follette, K., Kuzuhara, M., Tanii, R., Itoh, Y., Thalmann, C., Wisniewski, J., Mayama, S., Janson, M., Abe, L., Brandner, W., Carson, J., Egner, S., Feldt, M., Goto, M., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K. W., Honda, M., Inutsuka, S., Ishii, M., Iye, M., Kandori, R., Knapp, G. R., Kudo, T., Kusakabe, N., Matsuo, T., McElwain, M. W., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Suto, H., Suzuki, R., Takami, M., Takato, N., Terada, H., Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Solar and Stellar Astrophysics
Abstract: Transitional circumstellar disks around young stellar objects have a distinctive infrared deficit around 10 microns in their Spectral Energy Distributions (SED), recently measured by the Spitzer Infrared Spectrograph (IRS), suggesting dust depletion in the inner regions. These disks have been confirmed to have giant central cavities by imaging of the submillimeter (sub-mm) continuum emission using the Submillimeter Array (SMA). However, the polarized near-infrared scattered light images for most objects in a systematic IRS/SMA cross sample, obtained by HiCIAO on the Subaru telescope, show no evidence for the cavity, in clear contrast with SMA and Spitzer observations. Radiative transfer modeling indicates that many of these scattered light images are consistent with a smooth spatial distribution for micron-sized grains, with little discontinuity in the surface density of the micron-sized grains at the cavity edge. Here we present a generic disk model that can simultaneously account for the general features in IRS, SMA, and Subaru observations. Particularly, the scattered light images for this model are computed, which agree with the general trend seen in Subaru data. Decoupling between the spatial distributions of the micron-sized dust and mm-sized dust inside the cavity is suggested by the model, which, if confirmed, necessitates a mechanism, such as dust filtration, for differentiating the small and big dust in the cavity clearing process. Our model also suggests an inwardly increasing gas-to-dust-ratio in the inner disk, and different spatial distributions for the small dust inside and outside the cavity, echoing the predictions in grain coagulation and growth models., Comment: 41 pages (single column), 1 table, 10 figures, ApJ accepted
Published: 2012
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25. Discovery of Small-Scale Spiral Structures in the Disk of SAO 206462 (HD 135344B): Implications for the Physical State of the Disk from Spiral Density Wave Theory

Author: Muto, T., Grady, C. A., Hashimoto, J., Fukagawa, M., Hornbeck, J. B., Sitko, M., Russell, R., Werren, C., Cure, M., Currie, T., Ohashi, N., Okamoto, Y., Momose, M., Honda, M., Inutsuka, S., Takeuchi, T., Dong, R., Abe, L., Brandner, W., Brandt, T., Carson, J., Egner, S., Feldt, M., Fukue, T., Goto, M., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Janson, M., Kandori, R., Knapp, G. R., Kudo, T., Kusakabe, N., Kuzuhara, M., Matsuo, T., Mayama, S., McElwain, M. W., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Serabyn, E., Suto, H., Suzuki, R., Takami, M., Takato, N., Terada, H., Thalmann, C., Tomono, D., Turner, E. L., Watanabe, M., Wisniewski, J. P., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Earth and Planetary Astrophysics, Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract: We present high-resolution, H-band, imaging observations, collected with Subaru/HiCIAO, of the scattered light from the transitional disk around SAO 206462 (HD 135344B). Although previous sub-mm imagery suggested the existence of the dust-depleted cavity at r~46AU, our observations reveal the presence of scattered light components as close as 0.2" (~28AU) from the star. Moreover, we have discovered two small-scale spiral structures lying within 0.5" (~70AU). We present models for the spiral structures using the spiral density wave theory, and derive a disk aspect ratio of h~0.1, which is consistent with previous sub-mm observations. This model can potentially give estimates of the temperature and rotation profiles of the disk based on dynamical processes, independently from sub-mm observations. It also predicts the evolution of the spiral structures, which can be observable on timescales of 10-20 years, providing conclusive tests of the model. While we cannot uniquely identify the origin of these spirals, planets embedded in the disk may be capable of exciting the observed morphology. Assuming that this is the case, we can make predictions on the locations and, possibly, the masses of the unseen planets. Such planets may be detected by future multi-wavelengths observations., Comment: 8 pages, 5 figures, ApJL in press, typo corrected
Published: 2012
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26. Images of the Extended Outer Regions of the Debris Ring Around HR 4796 A

Author: Thalmann, C., Janson, M., Buenzli, E., Brandt, T. D., Wisniewski, J. P., Moro-Martín, A., Usuda, T., Schneider, G., Carson, J., McElwain, M. W., Grady, C. A., Goto, M., Abe, L., Brandner, W., Dominik, C., Egner, S., Feldt, M., Fukue, T., Golota, T., Guyon, O., Hashimoto, J., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Kandori, R., Knapp, G. R., Kudo, T., Kusakabe, N., Kuzuhara, M., Matsuo, T., Miyama, S., Morino, J. -I., Nishimura, T., Pyo, T. -S., Serabyn, E., Suto, H., Suzuki, R., Takahashi, Y. H., Takami, M., Takato, N., Terada, H., Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: We present high-contrast images of HR 4796 A taken with Subaru/HiCIAO in H-band, resolving the debris disk in scattered light. The application of specialized angular differential imaging methods (ADI) allows us to trace the inner edge of the disk with high precision, and reveals a pair of "streamers" extending radially outwards from the ansae. Using a simple disk model with a power-law surface brightness profile, we demonstrate that the observed streamers can be understood as part of the smoothly tapered outer boundary of the debris disk, which is most visible at the ansae. Our observations are consistent with the expected result of a narrow planetesimal ring being ground up in a collisional cascade, yielding dust with a wide range of grain sizes. Radiation forces leave large grains in the ring and push smaller grains onto elliptical, or even hyperbolic trajectories. We measure and characterize the disk's surface brightness profile, and confirm the previously suspected offset of the disk's center from the star's position along the ring's major axis. Furthermore, we present first evidence for an offset along the minor axis. Such offsets are commonly viewed as signposts for the presence of unseen planets within a disk's cavity. Our images also offer new constraints on the presence of companions down to the planetary mass regime (~9 Jupiter masses at 0.5", ~3 Jupiter masses at 1")., Comment: 6 pages, 4 figures, 1 table; accepted for publication in ApJ Letters
Published: 2011
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27. Direct Imaging of Fine Structures in Giant Planet Forming Regions of the Protoplanetary Disk around AB Aurigae

Author: Hashimoto, J., Tamura, M., Muto, T., Kudo, T., Fukagawa, M., Fukue, T., Goto, M., Grady, C. A., Henning, T., Hodapp, K., Honda, M., Inutsuka, S., Kokubo, E., Knapp, G., McElwain, M. W., Momose, M., Ohashi, N., Okamoto, Y. K., Takami, M., Turner, E. L., Wisniewski, J., Janson, M., Abe, L., Brandner, W., Carson, J., Egner, S., Feldt, M., Golota, T., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Ishii, M., Kandori, R., Kusakabe, N., Matsuo, T., Mayama, S., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Suto, H., Suzuki, R., Takato, N., Terada, H., Thalmann, C., Tomono, D., Watanabe, M., Yamada, T., Takami, H., and Usuda, T.
Subjects: Astrophysics - Solar and Stellar Astrophysics
Abstract: We report high-resolution 1.6 $\micron$ polarized intensity ($PI$) images of the circumstellar disk around the Herbig Ae star AB Aur at a radial distance of 22 AU ($0."15$) up to 554 AU (3.$"$85), which have been obtained by the high-contrast instrument HiCIAO with the dual-beam polarimetry. We revealed complicated and asymmetrical structures in the inner part ($\lesssim$140 AU) of the disk, while confirming the previously reported outer ($r$ $\gtrsim$200 AU) spiral structure. We have imaged a double ring structure at $\sim$40 and $\sim$100 AU and a ring-like gap between the two. We found a significant discrepancy of inclination angles between two rings, which may indicate that the disk of AB Aur is warped. Furthermore, we found seven dips (the typical size is $\sim$45 AU or less) within two rings as well as three prominent $PI$ peaks at $\sim$40 AU. The observed structures, including a bumpy double ring, a ring-like gap, and a warped disk in the innermost regions, provide essential information for understanding the formation mechanism of recently detected wide-orbit ($r$ $>$20 AU) planets., Comment: 12 pages, 3 figures
Published: 2011
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28. Near-Infrared Multi-Band Photometry of the Substellar Companion GJ 758 B

Author: Janson, M., Carson, J., Thalmann, C., McElwain, M. W., Goto, M., Crepp, J., Wisniewski, J., Abe, L., Brandner, W., Burrows, A., Egner, S., Feldt, M., Grady, C. A., Golota, T., Guyon, O., Hashimoto, J., Hayano, Y., Hayashi, M., Hayashi, S., Henning, T., Hodapp, K. W., Ishii, M., Iye, M., Kandori, R., Knapp, G. R., Kudo, T., Kusakabe, N., Kuzuhara, M., Matsuo, T., Mayama, S., Miyama, S., Morino, J. -I., Moro-Martin, A., Nishimura, T., Pyo, T. -S., Serabyn, E., Suto, H., Suzuki, R., Takami, M., Takato, N., Terada, H., Tofflemire, B., Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: GJ 758 B is a cold (~600K) companion to a Sun-like star at 29 AU projected separation, which was recently detected with high-contrast imaging. Here we present photometry of the companion in seven photometric bands from Subaru/HiCIAO, Gemini/NIRI and Keck/NIRC2, providing a rich sampling of the spectral energy distribution in the 1-5 micron wavelength range. A clear detection at 1.58 micron combined with an upper limit at 1.69 micron shows methane absorption in the atmosphere of the companion. The mass of the companion remains uncertain, but an updated age estimate indicates that the most likely mass range is ~30-40 Mjup. In addition, we present an updated astrometric analysis that imposes tighter constraints on GJ 758 B's orbit and identifies the proposed second candidate companion, "GJ 758 C", as a background star., Comment: 10 pages, 4 figures, accepted for publication in ApJ Letters. New version: Corrected a few numbers in the astrometry section (which were already correct in the print version, but were based on an outdated simulation in the astro-ph version)
Published: 2010
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29. Pre-transitional disk nature of the AB Aur disk

Author: Honda, M., Inoue, A. K., Okamoto, Y. K., Kataza, H., Fukagawa, M., Yamashita, T., Fujiyoshi, T., Tamura, M., Hashimoto, J., Miyata, T., Sako, S., Sakon, I., Fujiwara, H., Kamizuka, T., and Onaka, T.
Subjects: Astrophysics - Earth and Planetary Astrophysics
Abstract: The disk around AB Aur was imaged and resolved at 24.6\,$\mu$m using the Cooled Mid-Infrared Camera and Spectrometer on the 8.2m Subaru Telescope. The gaussian full-width at half-maximum of the source size is estimated to be 90 $\pm$ 6 AU, indicating that the disk extends further out at 24.6\,$\mu$m than at shorter wavelengths. In order to interpret the extended 24.6\,$\mu$m image, we consider a disk with a reduced surface density within a boundary radius $R_c$, which is motivated by radio observations that suggest a reduced inner region within about 100 AU from the star. Introducing the surface density reduction factor $f_c$ for the inner disk, we determine that the best match with the observed radial intensity profile at 24.6\,$\mu$m is achieved with $R_c$=88 AU and $f_c$=0.01. We suggest that the extended emission at 24.6\,$\mu$m is due to the enhanced emission from a wall-like structure at the boundary radius (the inner edge of the outer disk), which is caused by a jump in the surface density at $R_c$. Such reduced inner disk and geometrically thick outer disk structure can also explain the more point-like nature at shorter wavelengths. We also note that this disk geometry is qualitatively similar to a pre-transitional disk, suggesting that the AB Aur disk is in a pre-transitional disk phase., Comment: 10 pages, 4 figures, accepted for publication in ApJ
Published: 2010
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30. Imaging of a Transitional Disk Gap in Reflected Light: Indications of Planet Formation Around the Young Solar Analog LkCa 15

Author: Thalmann, C., Grady, C. A., Goto, M., Wisniewski, J. P., Janson, M., Henning, T., Fukagawa, M., Honda, M., Mulders, G. D., Min, M., Moro-Martín, A., McElwain, M. W., Hodapp, K. W., Carson, J., Abe, L., Brandner, W., Egner, S., Feldt, M., Fukue, T., Golota, T., Guyon, O., Hashimoto, J., Hayano, Y., Hayashi, M., Hayashi, S., Ishii, M., Kandori, R., Knapp, G. R., Kudo, T., Kusakabe, N., Kuzuhara, M., Matsuo, T., Miyama, S., Morino, J. -I., Nishimura, T., Pyo, T. -S., Serabyn, E., Shibai, H., Suto, H., Suzuki, R., Takami, M., Takato, N., Terada, H., Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Subjects: Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract: We present H- and Ks-band imaging data resolving the gap in the transitional disk around LkCa 15, revealing the surrounding nebulosity. We detect sharp elliptical contours delimiting the nebulosity on the inside as well as the outside, consistent with the shape, size, ellipticity, and orientation of starlight reflected from the far-side disk wall, whereas the near-side wall is shielded from view by the disk's optically thick bulk. We note that forward-scattering of starlight on the near-side disk surface could provide an alternate interpretation of the nebulosity. In either case, this discovery provides confirmation of the disk geometry that has been proposed to explain the spectral energy distributions (SED) of such systems, comprising an optically thick outer disk with an inner truncation radius of ~46 AU enclosing a largely evacuated gap. Our data show an offset of the nebulosity contours along the major axis, likely corresponding to a physical pericenter offset of the disk gap. This reinforces the leading theory that dynamical clearing by at least one orbiting body is the cause of the gap. Based on evolutionary models, our high-contrast imagery imposes an upper limit of 21 Jupiter masses on companions at separations outside of 0.1" and of 13 Jupiter masses outside of 0.2". Thus, we find that a planetary system around LkCa 15 is the most likely explanation for the disk architecture., Comment: 5 pages, 4 figures, accepted for publication in ApJ Letters. Minor change to Figure 4
Published: 2010
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31. Near-Infrared Circular Polarimetry and Correlation Diagrams in the Orion BN/KL Region: Contribution of Dichroic Extinction

Author: Fukue, T., Tamura, M., Kandori, R., Kusakabe, N., Hough, J. H., Lucas, P. W., Bailey, J., Whittet, D. C. B., Nakajima, Y., Hashimoto, J., and Nagata, T.
Subjects: Astrophysics - Astrophysics of Galaxies, Astrophysics - Solar and Stellar Astrophysics
Abstract: We present a deep circular polarization image of the Orion BN/KL nebula in the Ks band and correlations of circular polarization, linear polarization, and H-Ks color representing extinction. The image of circular polarization clearly reveals the quadrupolar structure around the massive star IRc2, rather than BN. H-Ks color is well correlated with circular polarization. A simple relation between dichroic extinction, color excess, circular and linear polarization is derived. The observed correlation between the Stokes parameters and the color excess agrees with the derived relation, and suggests a major contribution of dichroic extinction to the production of circular polarization in this region, indicating the wide existence of aligned grains., Comment: 15 pages, 3 figures, accepted for publication in The Astrophysical Journal Letters
Published: 2009
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32. Wide-Field Infrared Imaging Polarimetry of the NGC 6334 Region: A Nest of Infrared Reflection Nebulae

Author: Hashimoto, J., Tamura, M., Kandori, R., Kusakabe, N., Nakajima, Y., Kurita, M., Nagata, T., Nagayama, T., Hough, J., and Chrysostomou, A.
Subjects: Astrophysics
Abstract: We report the detection of eighteen infrared reflection nebulae (IRNe) in the $J$, $H$, & $Ks$ linear polarimetric observations of the NGC 6334 massive star-formation complex, of which 16 IRNe are new discoveries. Our images cover $\sim$180 square arcminutes, one of the widest near-infrared polarization data in star-formation regions so far. These IRNe are most likely associated with embedded young OB stars at different evolutionary phases, showing a variety of sizes, morphologies, and polarization properties, which can be divided into four categories. We argue the different nebula characteristics to be a possible evolutionary sequence of circumstellar structures around young massive stars., Comment: 4 pages, 1 figure
Published: 2008
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33. Near-Infrared Imaging Polarimetry of the Star Forming Region NGC 2024

Author: Kandori, R., Tamura, M., Kusakabe, N., Nakajima, Y., Nagayama, T., Nagashima, C., Hashimoto, J., Ishihara, A., Nagata, T., and Hough, J.
Subjects: Astrophysics
Abstract: We conducted wide-field JHKs imaging polarimetry toward NGC 2024. We found a prominent and extended polarized nebula over NGC 2024, and constrained the location of illuminating source of the nebula through the analysis of polarization vectors. A massive star, IRS 2b, is located in the center of the symmetric vector pattern. Five small polarized nebulae associated with YSOs are discovered on our polarization images. These nebulae are responsible for the structures of circumstellar matter that produce strongly polarized light through dust scattering. For the point-like sources, we performed software aperture polarimetry in order to measure integrated polarizations, and found five young brown dwarfs with highly polarized integrated emission. These sources serve as direct evidence for the existence of disk/envelope system around brown dwarfs. We investigated the magnetic field structure of NGC 2024 through the measurements of dichroic polarization. The average position angle of projected magnetic fields across the region is found to be 110 degrees. We found a good consistency in magnetic field structures obtained using near-infrared dichroic polarization and sub-mm/far-infrared dust emission polarization, indicating that the dichroic polarizations at near-infrared wavelengths trace magnetic field structures inside dense molecular clouds., Comment: Accepted for publication in the PASJ (Publications of the Astronomical Society of Japan). 27 pages, including 11 figures. The version with higher resolution figures and an electric table can be obtained at the following site (http://optik2.mtk.nao.ac.jp/~kandori/preprint/NGC2024/)
Published: 2007

34. Near Infrared Polarization Images of the Orion Nebula

Author: Tamura, M., Kandori, R., Kusakabe, N., Nakajima, Y., Hashimoto, J., Nagashima, C., Nagata, T., Nagayama, T., Kimura, H., Yamamoto, T., Hough, J. H., Lucas, P., Chrysostomou, A., and Bailey, J.
Subjects: Astrophysics
Abstract: Wide-field (~8' x 8') and deep near-infrared (JHKs bands) polarization images of the Orion nebulae (IRNe) around young stellar objects (YSOs), both massive and low-mass. We found the IRNe around both IRc2 and BN to be very extensive, suggesting that there might be two extended (>0.7 pc) bipolar/monopolar IRNe in these sources. We discovered at least 13 smaller-scale (~0.01-0.1 pc) IRNe around less-massive YSOs including the famous source theta^2 Ori C. We also suggest the presence of many unresolved (<690 AU) systems around low-mass YSOs and young brown dwarfs showing possible intrinsic polarizations. Wide-field infrared polarimetry is thus demonstrated to be a powerful technique in revealing IRNe and hence potential disk/outflow systems among high-mass to substellar YSOs., Comment: 6 pages, 3 figures. ApJ, in press
Published: 2006
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35. Phylogeny of Hydrothermal-Vent-Endemic Gastropods Alviniconcha spp. from the Western Pacific Revealed by Mitochondrial DNA Sequences

Author: Kojima, S, Segawa, R, Fijiwara, Y, Fujikura, K, Ohta, S, Hashimoto, J, and BioStor
Published: 2001

36. Biogeography and Ecological Setting of Indian Ocean Hydrothermal Vents

Author: van Dover, C. L., Humphris, S. E., Fornari, D., Cavanaugh, C. M., Collier, R., Goffredi, S. K., Hashimoto, J., Lilley, M. D., Reysenbach, A. L., Shank, T. M., von Damm, K. L., Banta, A., Gallant, R. M., Götz, D., Green, D., Hall, J., Harmer, T. L., Hurtado, L. A., Johnson, P., McKiness, Z. P., Meredith, C., Olson, E., Pan, I. L., Turnipseed, M., Won, Y., Young, C. R., and Vrijenhoek, R. C.
Published: 2001

37. Phylogeny of Hydrothermal-Vent-Endemic Gastropods Alviniconcha spp. from the Western Pacific Revealed by Mitochondrial DNA Sequences

Author: Kojima, S., Segawa, R., Fijiwara, Y., Fujikura, K., Ohta, S., and Hashimoto, J.
Published: 2001
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38. Lamellibrachia Satsuma, A New Species Of Vestimentiferan Worms Bay, Japan

Author: Miura, T, Tsukahara, J, Hashimoto, J, and BioStor
Published: 1997

39. Impact of switching oral bisphosphonates to denosumab or daily teriparatide on the progression of radiographic joint destruction in patients with biologic-naïve rheumatoid arthritis

Author: Ebina, K., Hirao, M., Hashimoto, J., Matsuoka, H., Iwahashi, T., Chijimatsu, R., Etani, Y., Okamura, G., Miyama, A., and Yoshikawa, H.
Published: 2018
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40. Nutritional and Functional Characteristics of Whole-grain Cookies with Added Gurguéia Nut (Dipteryx Lacunifera Ducke) and Soursop Residue (Annona Muricata L.)

Author: CAMPOS, C. de M. F., SOARES, A. K. de O., GONÇALVES, M. F. B., HASHIMOTO, J. M., MOREIRA-ARAÚJO, R. S. dos R., CLÉLIA DE MOURA FÉ CAMPOS, UFPI, ANA KARINE DE OLIVEIRA SOARES, UFPI, MARIA FABRICIA BESERRA GONÇALVES, UFPI, JORGE MINORU HASHIMOTO, CPAMN, and REGILDA SARAIVA DOS REIS MOREIRA-ARAÚJO, UFPI.
Subjects: Biscoito integral, Resíduo de graviola, Análise sensorial, Frutas do cerrado, Resíduo de castanha de Gurguéia, Food Science
Abstract: The objective was to determine the nutritional and functional characteristics of cookies with the addition of Gurguéia nut and soursop residue. Three whole-grain cookie formulations were developed from a standard (SC). Whole-grain cookies 2 (WC2) had greater acceptance and preference. Proximate composition, microbiological, and bioactive compound analyses were performed for WC2 and SC. WC2 exhibited higher levels of proteins, lipids, ash, total phenolics, condensed tannins, vitamin C, and antioxidant activity, with lower carbohydrate content and equivalent energy. In the microbiological analysis, the cookies were shown to be adequate for consumption. Cookies produced with regional raw materials proved to be a healthier option. Made available in DSpace on 2022-02-14T15:00:24Z (GMT). No. of bitstreams: 1 NutritionalFunctionalCharacteristicsWholeGrainCookiesJCSTFev2022.pdf: 1580920 bytes, checksum: 2152acabf742d9cb8a56c34b66962e90 (MD5) Previous issue date: 2022 Published online: 13 Feb 2022.
Published: 2022

41. Impact of COVID-19 on the imaging diagnosis of cardiac disease in Europe

Author: Williams, M, Shaw, L, Hirschfeld, C, Maurovich-Horvat, P, Norgaard, B, Pontone, G, Jimenez-Heffernan, A, Sinitsyn, V, Sergienko, V, Ansheles, A, Bax, J, Buechel, R, Milan, E, Slart, R, Nicol, E, Bucciarelli-Ducci, C, Pynda, Y, Better, N, Cerci, R, Dorbala, S, Raggi, P, Villines, T, Vitola, J, Malkovskiy, E, Goebel, B, Cohen, Y, Randazzo, M, Pascual, T, Dondi, M, Paez, D, Einstein, A, Nasery, M, Goda, A, Shirka, E, Benlabgaa, R, Bouyoucef, S, Medjahedi, A, Nailli, Q, Agolti, M, Aguero, R, Del Carmen Alak, M, Alberguina, L, Arronada, G, Astesiano, A, Norton, C, Benteo, P, Blanco, J, Bonelli, J, Bustos, J, Cabrejas, R, Cachero, J, Campisi, R, Canderoli, A, Carames, S, Carrascosa, P, Castro, R, Cendoya, O, Cognigni, L, Collaud, C, Cortes, C, Courtis, J, Cragnolino, D, Daicz, M, De La Vega, A, De Maria, S, Del Riego, H, Dettori, F, Deviggiano, A, Dragonetti, L, Embon, M, Enriquez, R, Ensinas, J, Faccio, F, Facello, A, Garofalo, D, Geronazzo, R, Gonza, N, Gutierrez, L, Guzzo, M, Hasbani, V, Huerin, M, Jager, V, Lewkowicz, J, De Munain, M, Lotti, J, Marquez, A, Masoli, O, Mastrovito, E, Mayoraz, M, Melado, G, Mele, A, Merani, M, Meretta, A, Molteni, S, Montecinos, M, Noguera, E, Novoa, C, Sueldo, C, Ascani, S, Pollono, P, Pujol, M, Radzinschi, A, Raimondi, G, Redruello, M, Rodriguez, M, Romero, R, Acuna, A, Rovaletti, F, Miguel, L, Solari, L, Strada, B, Traverso, S, Traverzo, S, Del Huerto Velazquez Espeche, M, Weihmuller, J, Wolcan, J, Zeffiro, S, Sakanyan, M, Beuzeville, S, Boktor, R, Butler, P, Calcott, J, Carr, L, Chan, V, Chao, C, Chong, W, Dobson, M, Downie, D, Dwivedi, G, Elison, B, Engela, J, Francis, R, Gaikwad, A, Basavaraj, A, Goodwin, B, Greenough, R, Hamilton-Craig, C, Hsieh, V, Joshi, S, Lederer, K, Lee, K, Lee, J, Magnussen, J, Mai, N, Mander, G, Murton, F, Nandurkar, D, Neill, J, O'Rourke, E, O'Sullivan, P, Pandos, G, Pathmaraj, K, Pitman, A, Poulter, R, Premaratne, M, Prior, D, Ridley, L, Rutherford, N, Salehi, H, Saunders, C, Scarlett, L, Seneviratne, S, Shetty, D, Shrestha, G, Shulman, J, Solanki, V, Stanton, T, Stuart, M, Stubbs, M, Swainson, I, Taubman, K, Taylor, A, Thomas, P, Unger, S, Upton, A, Vamadevan, S, Van Gaal, W, Verjans, J, Voutnis, D, Wayne, V, Wilson, P, Wong, D, Wong, K, Younger, J, Feuchtner, G, Mirzaei, S, Weiss, K, Maroz-Vadalazhskaya, N, Gheysens, O, Homans, F, Moreno-Reyes, R, Pasquet, A, Roelants, V, Van De Heyning, C, Rios, R, Soldat-Stankovic, V, Stankovic, S, Siqueira, M, Almeida, A, Togni, P, Andrade, J, Andrade, L, Anselmi, C, Araujo, R, Azevedo, G, Bezerra, S, Biancardi, R, Grossman, G, Brandao, S, Pianta, D, Carreira, L, Castro, B, Chang, T, Cunali, F, Cury, R, Dantas, R, De Amorim Fernandes, F, De Lorenzo, A, De MacEdo Filho, R, Erthal, F, Fernandes, F, Fernandes, J, De Souza, T, Alves, W, Ghini, B, Goncalves, L, Gottlieb, I, Hadlich, M, Kameoka, V, Lima, R, Lima, A, Lopes, R, E Silva, R, Magalhaes, T, Silva, F, Mastrocola, L, Medeiros, F, Meneghetti, J, Naue, V, Naves, D, Nolasco, R, Nomura, C, Oliveira, J, Paixao, E, De Carvalho, F, Pinto, I, Possetti, P, Quinta, M, Ramos, R, Rocha, R, Rodrigues, A, Rodrigues, C, Romantini, L, Sanches, A, Santana, S, Da Silva, L, Schvartzman, P, Matushita, C, Senra, T, Shiozaki, A, De Siqueira, M, Siqueira, C, Smanio, P, Soares, C, Soares, J, Bittencourt, M, Spiro, B, Mesquita, C, Torreao, J, Torres, R, Uellendahl, M, Monte, G, Verissimo, O, Cabeda, E, Pedras, F, Waltrick, R, Zapparoli, M, Naseer, H, Garcheva-Tsacheva, M, Kostadinova, I, Theng, Y, Abikhzer, G, Barette, R, Chow, B, Dabreo, D, Friedrich, M, Garg, R, Hafez, M, Johnson, C, Kiess, M, Leipsic, J, Leung, E, Miller, R, Oikonomou, A, Probst, S, Roifman, I, Small, G, Tandon, V, Trivedi, A, White, J, Zukotynski, K, Canessa, J, Munoz, G, Concha, C, Hidalgo, P, Lovera, C, Massardo, T, Vargas, L, Abad, P, Arturo, H, Ayala, S, Benitez, L, Cadena, A, Caicedo, C, Moncayo, A, Gomez, S, Villamil, C, Jaimes, C, Londono, J, Blair, J, Pabon, L, Pineda, M, Rojas, J, Ruiz, D, Escobar, M, Vasquez, A, Vergel, D, Zuluaga, A, Gamboa, I, Castro, G, Gonzalez, U, Baric, A, Batinic, T, Franceschi, M, Hrabak, M, Jukic, M, Medakovic, P, Persic, V, Prpic, M, Punda, A, Batista, J, Lauchy, J, Gutierrez, Y, Menendez, R, Peix, A, Rochela, L, Panagidis, C, Petrou, I, Engelmann, V, Kaminek, M, Kincl, V, Lang, O, Simanek, M, Abdulla, J, Bottcher, M, Christensen, M, Gormsen, L, Hasbak, P, Hess, S, Holdgaard, P, Johansen, A, Kyhl, K, Ovrehus, K, Sand, N, Steffensen, R, Thomassen, A, Zerahn, B, Perez, A, Velez, G, Velez, M, Aziz, I, Abougabal, M, Ahmed, T, Allam, A, Asfour, A, Hassan, M, Hassan, A, Ibrahim, A, Kaffas, S, Kandeel, A, Ali, M, Mansy, A, Maurice, H, Nabil, S, Shaaban, M, Flores, A, Poksi, A, Knuuti, J, Kokkonen, V, Larikka, M, Uusitalo, V, Bailly, M, Burg, S, Deux, J, Habouzit, V, Hyafil, F, Lairez, O, Proffit, F, Regaieg, H, Sarda-Mantel, L, Tacher, V, Schneider, R, Ayetey, H, Angelidis, G, Archontaki, A, Chatziioannou, S, Datseris, I, Fragkaki, C, Georgoulias, P, Koukouraki, S, Koutelou, M, Kyrozi, E, Repasos, E, Stavrou, P, Valsamaki, P, Gonzalez, C, Gutierrez, G, Maldonado, A, Buga, K, Garai, I, Schmidt, E, Szilveszter, B, Varady, E, Banthia, N, Bhagat, J, Bhargava, R, Bhat, V, Bhatia, M, Choudhury, P, Chowdekar, V, Irodi, A, Jain, S, Joseph, E, Kumar, S, Mahapatra, G, Mitra, D, Mittal, B, Ozair, A, Patel, C, Patel, T, Patel, R, Patel, S, Saxena, S, Sengupta, S, Singh, S, Singh, B, Sood, A, Verma, A, Affandi, E, Alam, P, Edison, E, Gunawan, G, Hapkido, H, Hidayat, B, Huda, A, Mukti, A, Prawiro, D, Soeriadi, E, Syawaluddin, H, Albadr, A, Assadi, M, Emami, F, Houshmand, G, Maleki, M, Rostami, M, Zakavi, S, Zaid, E, Agranovich, S, Arnson, Y, Bar-Shalom, R, Frenkel, A, Knafo, G, Lugassi, R, Moalem, I, Mor, M, Muskal, N, Ranser, S, Shalev, A, Albano, D, Alongi, P, Arnone, G, Bagatin, E, Baldari, S, Bauckneht, M, Bertelli, P, Bianco, F, Bonfiglioli, R, Boni, R, Bruno, A, Bruno, I, Busnardo, E, Califaretti, E, Camoni, L, Carnevale, A, Casoni, R, Cavallo, A, Cavenaghi, G, Chierichetti, F, Chiocchi, M, Cittanti, C, Colletta, M, Conti, U, Cossu, A, Cuocolo, A, Cuzzocrea, M, De Rimini, M, De Vincentis, G, Del Giudice, E, Del Torto, A, Della Tommasina, V, Durmo, R, Erba, P, Evangelista, L, Faletti, R, Faragasso, E, Farsad, M, Ferro, P, Florimonte, L, Frantellizzi, V, Fringuelli, F, Gatti, M, Gaudiano, A, Gimelli, A, Giubbini, R, Giuffrida, F, Ialuna, S, Laudicella, R, Leccisotti, L, Leva, L, Liga, R, Liguori, C, Longo, G, Maffione, M, Mancini, M, Marcassa, C, Nardi, B, Pacella, S, Pepe, G, Pulizzi, S, Quartuccio, N, Rampin, L, Ricci, F, Rossini, P, Rubini, G, Russo, V, Sacchetti, G, Sambuceti, G, Scarano, M, Sciagra, R, Sperandio, M, Stefanelli, A, Ventroni, G, Zoboli, S, Baugh, D, Chambers, D, Madu, E, Nunura, F, Asano, H, Chimura, C, Fujimoto, S, Fujisue, K, Fukunaga, T, Fukushima, Y, Fukuyama, K, Hashimoto, J, Ichikawa, Y, Iguchi, N, Imai, M, Inaki, A, Ishimura, H, Isobe, S, Kadokami, T, Kato, T, Kudo, T, Kumita, S, Maruno, H, Mataki, H, Miyagawa, M, Morimoto, R, Moroi, M, Nagamachi, S, Nakajima, K, Nakata, T, Nakazato, R, Nanasato, M, Naya, M, Norikane, T, Ohta, Y, Okayama, S, Okizaki, A, Otomi, Y, Otsuka, H, Saito, M, Sakata, S, Sarai, M, Sato, D, Shiraishi, S, Suwa, Y, Takanami, K, Takehana, K, Taki, J, Tamaki, N, Taniguchi, Y, Teragawa, H, Tomizawa, N, Tsujita, K, Umeji, K, Wakabayashi, Y, Yamada, S, Yamazaki, S, Yoneyama, T, Rawashdeh, M, Batyrkhanov, D, Dautov, T, Makhdomi, K, Ombati, K, Alkandari, F, Garashi, M, Coie, T, Rajvong, S, Kalinin, A, Kalnina, M, Haidar, M, Komiagiene, R, Kviecinskiene, G, Mataciunas, M, Vajauskas, D, Picard, C, Karim, N, Reichmuth, L, Samuel, A, Allarakha, M, Naojee, A, Alexanderson-Rosas, E, Barragan, E, Becerril, A, Gonzalez-Montecinos, Cabada, M, Rodriguez, D, Carvajal-Juarez, I, Cortes, V, Cortes, F, De La Pena, E, Gama-Moreno, M, Gonzalez, L, Ramirez, N, Jimenez-Santos, M, Matos, L, Monroy, E, Morelos, M, Ornelas, M, Ramirez, J, Preciado-Anaya, A, Preciado-Gutierrez, O, Barragan, A, Uvera, S, Sandoval, S, Tomas, M, Sierra-Galan, L, Siu, S, Vallejo, E, Valles, M, Faraggi, M, Sereegotov, E, Ilic, S, Ben-Rais, N, Alaoui, N, Taleb, S, Myo, K, Thu, P, Ghimire, R, Rajbanshi, B, Barneveld, P, Glaudemans, A, Habets, J, Koopmans, K, Manders, J, Pool, S, Scholte, A, Scholtens, A, Thimister, P, Van Asperen, E, Veltman, N, Verschure, D, Wagenaar, N, Edmond, J, Ellis, C, Johnson, K, Keenan, R, Kueh, S, Occleshaw, C, Sasse, A, To, A, Van Pelt, N, Young, C, Cuadra, T, Vanegas, H, Soli, I, Issoufou, D, Ayodele, T, Madu, C, Onimode, Y, Efros-Monsen, E, Forsdahl, S, Dimmen, J, Jorgensen, A, Krohn, I, Lovhaugen, P, Braten, A, Al Dhuhli, H, Al Kindi, F, Al-Bulushi, N, Jawa, Z, Tag, N, Afzal, M, Fatima, S, Younis, M, Riaz, M, Saadullah, M, Herrera, Y, Lenturut-Katal, D, Vazquez, M, Ortellado, J, Akhter, A, Cao, D, Cheung, S, Dai, X, Gong, L, Han, D, Hou, Y, Li, C, Li, T, Li, D, Li, S, Liu, J, Liu, H, Lu, B, Ng, M, Sun, K, Tang, G, Wang, J, Wang, X, Wang, Z, Wang, Y, Wu, J, Wu, Z, Xia, L, Xiao, J, Xu, L, Yang, Y, Yin, W, Yu, J, Yuan, L, Zhang, T, Zhang, L, Zhang, Y, Zhang, X, Zhu, L, Alfaro, A, Abrihan, P, Barroso, A, Cruz, E, Gomez, M, Magboo, V, Medina, J, Obaldo, J, Pastrana, D, Pawhay, C, Quinon, A, Tang, J, Tecson, B, Uson, K, Uy, M, Kostkiewicz, M, Kunikowska, J, Bettencourt, N, Cantinho, G, Ferreira, A, Syed, G, Arnous, S, Atyani, S, Byrne, A, Gleeson, T, Kerins, D, Meehan, C, Murphy, D, Murphy, M, Murray, J, O'Brien, J, Bang, J, Bom, H, Cho, S, Hong, C, Jang, S, Jeong, Y, Kang, W, Kim, J, Namgung, C, So, Y, Won, K, Majstorov, V, Vavlukis, M, Salobir, B, Stalc, M, Benedek, T, Benedek, I, Mititelu, R, Stan, C, Dariy, O, Drozdova, O, Gagarina, N, Gulyaev, V, Itskovich, I, Karalkin, A, Kokov, A, Migunova, E, Pospelov, V, Ryzhkova, D, Saifullina, G, Sazonova, S, Shurupova, I, Trifonova, T, Ussov, W, Vakhromeeva, M, Valiullina, N, Zavadovsky, K, Zhuravlev, K, Alasnag, M, Okarvi, S, Saranovic, D, Keng, F, See, J, Sekar, R, Yew, M, Vondrak, A, Bejai, S, Bennie, G, Bester, R, Engelbrecht, G, Evbuomwan, O, Gongxeka, H, Vuuren, M, Kaplan, M, Khushica, P, Lakhi, H, Louw, L, Malan, N, Milos, K, Modiselle, M, More, S, Naidoo, M, Scholtz, L, Vangu, M, Aguade-Bruix, S, Blanco, I, Cabrera, A, Camarero, A, Casans-Tormo, I, Cuellar-Calabria, H, Flotats, A, Canamero, M, Garcia, M, Leta, R, Diaz, J, Lumbreras, L, Marquez-Cabeza, J, Martin, F, De Alegria, A, Medina, F, Canal, M, Peiro, V, Pubul-Nunez, V, Madrid, J, Rey, C, Perez, R, Ruiz, J, Hernandez, G, Sevilla, A, Zeidan, N, Nanayakkara, D, Udugama, C, Simonsson, M, Alkadhi, H, Burger, P, Ceriani, L, De Boeck, B, Grani, C, De Saint Lager Lucas, A, Kamani, C, Kawel-Boehm, N, Manka, R, Prior, J, Rominger, A, Vallee, J, Khiewvan, B, Premprabha, T, Thientunyakit, T, Sellem, A, Kir, K, Sayman, H, Sebikali, M, Muyinda, Z, Kmetyuk, Y, Korol, P, Mykhalchenko, O, Pliatsek, V, Satyr, M, Albalooshi, B, Anderson, J, Bedi, P, Biggans, T, Bularga, A, Bull, R, Burgul, R, Carpenter, J, Coles, D, Cusack, D, Deshpande, A, Dougan, J, Fairbairn, T, Farrugia, A, Gopalan, D, Gummow, A, Ramkumar, P, Hamilton, M, Harbinson, M, Hartley, T, Hudson, B, Joshi, N, Kay, M, Kelion, A, Khokhar, A, Kitt, J, Low, C, Mak, S, Marousa, N, Martin, J, Mcalindon, E, Menezes, L, Morgan-Hughes, G, Moss, A, Murray, A, Patel, D, Peebles, C, Pugliese, F, Rodrigues, J, Rofe, C, Sabharwal, N, Schofield, R, Semple, T, Sharma, N, Strouhal, P, Subedi, D, Topping, W, Tweed, K, Weir-Mccall, J, Abbara, S, Abbasi, T, Abbott, B, Abohashem, S, Abramson, S, Al-Abboud, T, Al-Mallah, M, Almousalli, O, Ananthasubramaniam, K, Kumar, M, Askew, J, Attanasio, L, Balmer-Swain, M, Bayer, R, Bernheim, A, Bhatti, S, Bieging, E, Blankstein, R, Bloom, S, Blue, S, Bluemke, D, Borges, A, Branch, K, Bravo, P, Brothers, J, Budoff, M, Bullock-Palmer, R, Burandt, A, Burke, F, Bush, K, Candela, C, Capasso, E, Cavalcante, J, Chang, D, Chatterjee, S, Chatzizisis, Y, Cheezum, M, Chen, T, Chen, J, Chen, M, Choi, A, Clarcq, J, Cordero, A, Crim, M, Danciu, S, Decter, B, Dhruva, N, Doherty, N, Doukky, R, Dunbar, A, Duvall, W, Edwards, R, Esquitin, K, Farah, H, Fentanes, E, Ferencik, M, Fisher, D, Fitzpatrick, D, Foster, C, Fuisz, T, Gannon, M, Gastner, L, Gerson, M, Ghoshhajra, B, Goldberg, A, Goldner, B, Gonzalez, J, Gore, R, Gracia-Lopez, S, Hage, F, Haider, A, Haider, S, Hamirani, Y, Hassen, K, Hatfield, M, Hawkins, C, Hawthorne, K, Heath, N, Hendel, R, Hernandez, P, Hill, G, Horgan, S, Huffman, J, Hurwitz, L, Iskandrian, A, Janardhanan, R, Jellis, C, Jerome, S, Kalra, D, Kaviratne, S, Kay, F, Kelly, F, Khalique, O, Kinkhabwala, M, Iii, G, Kircher, J, Kirkbride, R, Kontos, M, Kottam, A, Krepp, J, Layer, J, Lee, S, Leppo, J, Lesser, J, Leung, S, Lewin, H, Litmanovich, D, Liu, Y, Lopez-Mattei, J, Magurany, K, Markowitz, J, Marn, A, Matis, S, Mckenna, M, Mcrae, T, Mendoza, F, Merhige, M, Min, D, Moffitt, C, Moncher, K, Moore, W, Morayati, S, Morris, M, Mossa-Basha, M, Mrsic, Z, Murthy, V, Nagpal, P, Napier, K, Narula, J, Nelson, K, Nijjar, P, Osman, M, Parwani, P, Passen, E, Patel, A, Patil, P, Paul, R, Phillips, L, Polsani, V, Poludasu, R, Pomerantz, B, Porter, T, Prentice, R, Pursnani, A, Rabbat, M, Ramamurti, S, Rich, F, Luna, H, Robinson, A, Robles, K, Rodriguez, C, Rorie, M, Rumberger, J, Russell, R, Sabra, P, Sadler, D, Schemmer, M, Schoepf, U, Shah, S, Shah, N, Shanbhag, S, Sharma, G, Shayani, S, Shirani, J, Shivaram, P, Sigman, S, Simon, M, Slim, A, Smith, D, Smith, A, Soman, P, Srichai-Parsia, M, Streeter, J, Albert, T, Tawakol, A, Thomas, D, Thompson, R, Torbet, T, Trinidad, D, Ullery, S, Unzek, S, Uretsky, S, Vallurupalli, S, Verma, V, Waller, A, Wang, E, Ward, P, Weissman, G, Wesbey, G, White, K, Winchester, D, Wolinsky, D, Yost, S, Zgaljardic, M, Alonso, O, Beretta, M, Ferrando, R, Kapitan, M, Mut, F, Djuraev, O, Rozikhodjaeva, G, Ngoc, H, Mai, S, Nguyen, X, Williams M. C., Shaw L., Hirschfeld C. B., Maurovich-Horvat P., Norgaard B. L., Pontone G., Jimenez-Heffernan A., Sinitsyn V., Sergienko V., Ansheles A., Bax J. J., Buechel R., Milan E., Slart R. H. J. A., Nicol E., Bucciarelli-Ducci C., Pynda Y., Better N., Cerci R., Dorbala S., Raggi P., Villines T. C., Vitola J., Malkovskiy E., Goebel B., Cohen Y., Randazzo M., Pascual T. N. B., Dondi M., Paez D., Einstein A. J., Nasery M. N., Goda A., Shirka E., Benlabgaa R., Bouyoucef S., Medjahedi A., Nailli Q., Agolti M., Aguero R. N., Del Carmen Alak M., Alberguina L. G., Arronada G., Astesiano A., Norton C. B., Benteo P., Blanco J., Bonelli J. M., Bustos J. J., Cabrejas R., Cachero J., Campisi R., Canderoli A., Carames S., Carrascosa P., Castro R., Cendoya O., Cognigni L. M., Collaud C., Cortes C., Courtis J., Cragnolino D., Daicz M., De La Vega A., De Maria S. T., Del Riego H., Dettori F., Deviggiano A., Dragonetti L., Embon M., Enriquez R. E., Ensinas J., Faccio F., Facello A., Garofalo D., Geronazzo R., Gonza N., Gutierrez L., Guzzo M. A., Hasbani V., Huerin M., Jager V., Lewkowicz J. M., De Munain M. N. A. L., Lotti J. M., Marquez A., Masoli O., Masoli O. H., Mastrovito E., Mayoraz M., Melado G. E., Mele A., Merani M. F., Meretta A. H., Molteni S., Montecinos M., Noguera E., Novoa C., Sueldo C. P., Ascani S. P., Pollono P., Pujol M. P., Radzinschi A., Raimondi G., Redruello M., Rodriguez M., Romero R. L., Acuna A. R., Rovaletti F., Miguel L. S., Solari L., Strada B., Traverso S., Traverzo S. S., Del Huerto Velazquez Espeche M., Weihmuller J. S., Wolcan J., Zeffiro S., Sakanyan M., Beuzeville S., Boktor R., Butler P., Calcott J., Carr L., Chan V., Chao C., Chong W., Dobson M., Downie D., Dwivedi G., Elison B., Engela J., Francis R., Gaikwad A., Basavaraj A. G., Goodwin B., Greenough R., Hamilton-Craig C., Hsieh V., Joshi S., Lederer K., Lee K., Lee J., Magnussen J., Mai N., Mander G., Murton F., Nandurkar D., Neill J., O'Rourke E., O'Sullivan P., Pandos G., Pathmaraj K., Pitman A., Poulter R., Premaratne M., Prior D., Ridley L., Rutherford N., Salehi H., Saunders C., Scarlett L., Seneviratne S., Shetty D., Shrestha G., Shulman J., Solanki V., Stanton T., Stuart M., Stubbs M., Swainson I., Taubman K., Taylor A., Thomas P., Unger S., Upton A., Vamadevan S., Van Gaal W., Verjans J., Voutnis D., Wayne V., Wilson P., Wong D., Wong K., Younger J., Feuchtner G., Mirzaei S., Weiss K., Maroz-Vadalazhskaya N., Gheysens O., Homans F., Moreno-Reyes R., Pasquet A., Roelants V., Van De Heyning C. M., Rios R. A., Soldat-Stankovic V., Stankovic S., Siqueira M. H. A., Almeida A., Togni P. H. A., Andrade J. H., Andrade L., Anselmi C., Araujo R., Azevedo G., Bezerra S., Biancardi R., Grossman G. B., Brandao S., Pianta D. B., Carreira L., Castro B., Chang T., Cunali F., Cury R., Dantas R., De Amorim Fernandes F., De Lorenzo A., De MacEdo Filho R., Erthal F., Fernandes F., Fernandes J., De Souza T. F., Alves W. F., Ghini B., Goncalves L., Gottlieb I., Hadlich M., Kameoka V., Lima R., Lima A., Lopes R. W., E Silva R. M., Magalhaes T., Silva F. M., Mastrocola L. E., Medeiros F., Meneghetti J. C., Naue V., Naves D., Nolasco R., Nomura C., Oliveira J. B., Paixao E., De Carvalho F. P., Pinto I., Possetti P., Quinta M., Ramos R. R. N., Rocha R., Rodrigues A., Rodrigues C., Romantini L., Sanches A., Santana S., Da Silva L. S., Schvartzman P., Matushita C. S., Senra T., Shiozaki A., De Siqueira M. E. M., Siqueira C., Smanio P., Soares C. E., Soares J., Bittencourt M. S., Spiro B., Mesquita C. T., Torreao J., Torres R., Uellendahl M., Monte G. U., Verissimo O., Cabeda E. V., Pedras F. 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M., Sambuceti G., Scarano M., Sciagra R., Sperandio M., Stefanelli A., Ventroni G., Zoboli S., Baugh D., Chambers D., Madu E., Nunura F., Asano H., Chimura C. M., Fujimoto S., Fujisue K., Fukunaga T., Fukushima Y., Fukuyama K., Hashimoto J., Ichikawa Y., Iguchi N., Imai M., Inaki A., Ishimura H., Isobe S., Kadokami T., Kato T., Kudo T., Kumita S., Maruno H., Mataki H., Miyagawa M., Morimoto R., Moroi M., Nagamachi S., Nakajima K., Nakata T., Nakazato R., Nanasato M., Naya M., Norikane T., Ohta Y., Okayama S., Okizaki A., Otomi Y., Otsuka H., Saito M., Sakata S. Y., Sarai M., Sato D., Shiraishi S., Suwa Y., Takanami K., Takehana K., Taki J., Tamaki N., Taniguchi Y., Teragawa H., Tomizawa N., Tsujita K., Umeji K., Wakabayashi Y., Yamada S., Yamazaki S., Yoneyama T., Rawashdeh M., Batyrkhanov D., Dautov T., Makhdomi K., Ombati K., Alkandari F., Garashi M., Coie T. L., Rajvong S., Kalinin A., Kalnina M., Haidar M., Komiagiene R., Kviecinskiene G., Mataciunas M., Vajauskas D., Picard C., Karim N. K. A., Reichmuth L., Samuel A., Allarakha M. A., Naojee A. S., Alexanderson-Rosas E., Barragan E., Becerril A., Cabada M., Rodriguez D. C., Carvajal-Juarez I., Cortes V., Cortes F., De La Pena E., Gama-Moreno M., Gonzalez L., Ramirez N. G., Jimenez-Santos M., Matos L., Monroy E., Morelos M., Ornelas M., Ramirez J. A. O., Preciado-Anaya A., Preciado-Gutierrez O. U., Barragan A. P., Uvera S. G. R., Sandoval S., Tomas M. S., Sierra-Galan L. M., Siu S., Vallejo E., Valles M., Faraggi M., Sereegotov E., Ilic S., Ben-Rais N., Alaoui N. I., Taleb S., Myo K. P. P., Thu P. S., Ghimire R. K., Rajbanshi B., Barneveld P., Glaudemans A., Habets J., Koopmans K. P., Manders J., Pool S., Scholte A., Scholtens A., Slart R., Thimister P., Van Asperen E. -J., Veltman N., Verschure D., Wagenaar N., Edmond J., Ellis C., Johnson K., Keenan R., Kueh S. H., Occleshaw C., Sasse A., To A., Van Pelt N., Young C., Cuadra T., Vanegas H. B. R., Soli I. A., Issoufou D. M., Ayodele T., Madu C., Onimode Y., Efros-Monsen E., Forsdahl S. H., Dimmen J. -M. H., Jorgensen A., Krohn I., Lovhaugen P., Braten A. T., Al Dhuhli H., Al Kindi F., Al-Bulushi N., Jawa Z., Tag N., Afzal M. S., Fatima S., Younis M. N., Riaz M., Saadullah M., Herrera Y., Lenturut-Katal D., Vazquez M. C., Ortellado J., Akhter A., Cao D., Cheung S., Dai X., Gong L., Han D., Hou Y., Li C., Li T., Li D., Li S., Liu J., Liu H., Lu B., Ng M. Y., Sun K., Tang G., Wang J., Wang X., Wang Z. -Q., Wang Y., Wu J., Wu Z., Xia L., Xiao J., Xu L., Yang Y., Yin W., Yu J., Yuan L., Zhang T., Zhang L., Zhang Y. -G., Zhang X., Zhu L., Alfaro A., Abrihan P., Barroso A., Cruz E., Gomez M. R., Magboo V. P., Medina J. M., Obaldo J., Pastrana D., Pawhay C. M., Quinon A., Tang J. M., Tecson B., Uson K. J., Uy M., Kostkiewicz M., Kunikowska J., Bettencourt N., Cantinho G., Ferreira A., Syed G., Arnous S., Atyani S., Byrne A., Gleeson T., Kerins D., Meehan C., Murphy D., Murphy M., Murray J., O'Brien J., Bang J. -I., Bom H., Cho S. -G., Hong C. M., Jang S. J., Jeong Y. H., Kang W. J., Kim J. -Y., Namgung C. K., So Y., Won K. S., Majstorov V., Vavlukis M., Salobir B. G., Stalc M., Benedek T., Benedek I., Mititelu R., Stan C. A., Dariy O., Drozdova O., Gagarina N., Gulyaev V. M., Itskovich I., Karalkin A., Kokov A., Migunova E., Pospelov V., Ryzhkova D., Saifullina G., Sazonova S., Shurupova I., Trifonova T., Ussov W. Y., Vakhromeeva M., Valiullina N., Zavadovsky K., Zhuravlev K., Alasnag M., Okarvi S., Saranovic D. S., Keng F., See J. H. J., Sekar R., Yew M. S., Vondrak A., Bejai S., Bennie G., Bester R., Engelbrecht G., Evbuomwan O., Gongxeka H., Vuuren M. J., Kaplan M., Khushica P., Lakhi H., Louw L., Malan N., Milos K., Modiselle M., More S., Naidoo M., Scholtz L., Vangu M., Aguade-Bruix S., Blanco I., Cabrera A., Camarero A., Casans-Tormo I., Cuellar-Calabria H., Flotats A., Canamero M. E. F., Garcia M. E., Leta R., Diaz J. L., Lumbreras L., Marquez-Cabeza J. J., Martin F., De Alegria A. M., Medina F., Canal M. P., Peiro V., Pubul-Nunez V., Madrid J. I. R., Rey C. R., Perez R. R., Ruiz J., Hernandez G. S., Sevilla A., Zeidan N., Nanayakkara D., Udugama C., Simonsson M., Alkadhi H., Buechel R. R., Burger P., Ceriani L., De Boeck B., Grani C., De Saint Lager Lucas A. J., Kamani C. H., Kawel-Boehm N., Manka R., Prior J. O., Rominger A., Vallee J. -P., Khiewvan B., Premprabha T., Thientunyakit T., Sellem A., Kir K. M., Sayman H., Sebikali M. J., Muyinda Z., Kmetyuk Y., Korol P., Mykhalchenko O., Pliatsek V., Satyr M., Albalooshi B., Hassan M. I. A., Anderson J., Bedi P., Biggans T., Bularga A., Bull R., Burgul R., Carpenter J. -P., Coles D., Cusack D., Deshpande A., Dougan J., Fairbairn T., Farrugia A., Gopalan D., Gummow A., Ramkumar P. G., Hamilton M., Harbinson M., Hartley T., Hudson B., Joshi N., Kay M., Kelion A., Khokhar A., Kitt J., Low C., Mak S. M., Marousa N., Martin J., McAlindon E., Menezes L., Morgan-Hughes G., Moss A., Murray A., Patel D., Peebles C., Pugliese F., Rodrigues J. C. L., Rofe C., Sabharwal N., Schofield R., Semple T., Sharma N., Strouhal P., Subedi D., Topping W., Tweed K., Weir-Mccall J., Abbara S., Abbasi T., Abbott B., Abohashem S., Abramson S., Al-Abboud T., Al-Mallah M., Almousalli O., Ananthasubramaniam K., Kumar M. A., Askew J., Attanasio L., Balmer-Swain M., Bayer R. R., Bernheim A., Bhatti S., Bieging E., Blankstein R., Bloom S., Blue S., Bluemke D., Borges A., Branch K., Bravo P., Brothers J., Budoff M., Bullock-Palmer R., Burandt A., Burke F. W., Bush K., Candela C., Capasso E., Cavalcante J., Chang D., Chatterjee S., Chatzizisis Y., Cheezum M., Chen T., Chen J., Chen M., Choi A., Clarcq J., Cordero A., Crim M., Danciu S., Decter B., Dhruva N., Doherty N., Doukky R., Dunbar A., Duvall W., Edwards R., Esquitin K., Farah H., Fentanes E., Ferencik M., Fisher D., Fitzpatrick D., Foster C., Fuisz T., Gannon M., Gastner L., Gerson M., Ghoshhajra B., Goldberg A., Goldner B., Gonzalez J., Gore R., Gracia-Lopez S., Hage F., Haider A., Haider S., Hamirani Y., Hassen K., Hatfield M., Hawkins C., Hawthorne K., Heath N., Hendel R., Hernandez P., Hill G., Horgan S., Huffman J., Hurwitz L., Iskandrian A., Janardhanan R., Jellis C., Jerome S., Kalra D., Kaviratne S., Kay F., Kelly F., Khalique O., Kinkhabwala M., Iii G. K., Kircher J., Kirkbride R., Kontos M., Kottam A., Krepp J., Layer J., Lee S. H., Leppo J., Lesser J., Leung S., Lewin H., Litmanovich D., Liu Y., Lopez-Mattei J., Magurany K., Markowitz J., Marn A., Matis S. E., McKenna M., McRae T., Mendoza F., Merhige M., Min D., Moffitt C., Moncher K., Moore W., Morayati S., Morris M., Mossa-Basha M., Mrsic Z., Murthy V., Nagpal P., Napier K., Narula J., Nelson K., Nijjar P., Osman M., Parwani P., Passen E., Patel A., Patil P., Paul R., Phillips L., Polsani V., Poludasu R., Pomerantz B., Porter T., Prentice R., Pursnani A., Rabbat M., Ramamurti S., Rich F., Luna H. R., Robinson A., Robles K., Rodriguez C., Rorie M., Rumberger J., Russell R., Sabra P., Sadler D., Schemmer M., Schoepf U. J., Shah S., Shah N., Shanbhag S., Sharma G., Shayani S., Shirani J., Shivaram P., Sigman S., Simon M., Slim A., Smith D., Smith A., Soman P., Srichai-Parsia M. B., Streeter J., Albert T., Tawakol A., Thomas D., Thompson R., Torbet T., Trinidad D., Ullery S., Unzek S., Uretsky S., Vallurupalli S., Verma V., Waller A., Wang E., Ward P., Weissman G., Wesbey G., White K., Winchester D., Wolinsky D., Yost S., Zgaljardic M., Alonso O., Beretta M., Ferrando R., Kapitan M., Mut F., Djuraev O., Rozikhodjaeva G., Ngoc H. L., Mai S. H., and Nguyen X. C.
Abstract: Objectives We aimed to explore the impact of the COVID-19 pandemic on cardiac diagnostic testing and practice and to assess its impact in different regions in Europe. Methods The online survey organised by the International Atomic Energy Agency Division of Human Health collected information on changes in cardiac imaging procedural volumes between March 2019 and March/April 2020. Data were collected from 909 centres in 108 countries. Results Centres in Northern and Southern Europe were more likely to cancel all outpatient activities compared with Western and Eastern Europe. There was a greater reduction in total procedure volumes in Europe compared with the rest of the world in March 2020 (45% vs 41%, p=0.003), with a more marked reduction in Southern Europe (58%), but by April 2020 this was similar in Europe and the rest of the world (69% vs 63%, p=0.261). Regional variations were apparent between imaging modalities, but the largest reductions were in Southern Europe for nearly all modalities. In March 2020, location in Southern Europe was the only independent predictor of the reduction in procedure volume. However, in April 2020, lower gross domestic product and higher COVID-19 deaths were the only independent predictors. Conclusion The first wave of the COVID-19 pandemic had a significant impact on care of patients with cardiac disease, with substantial regional variations in Europe. This has potential long-term implications for patients and plans are required to enable the diagnosis of non-COVID- 19 conditions during the ongoing pandemic.
Published: 2021

42. DIFFERENTIAL CHARACTERISTICS OF AORTIC BLOOD PRESSURE AND CAROTID BLOOD FLOW AUGMENTATION: ASSOCIATIONS WITH AORTIC STIFFNESS AND IMPLICATIONS FOR MICROVASCULAR BRAIN DAMAGE

Author: Hashimoto, J., Westerhof, B., and Ito, S.
Published: 2018
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43. A Kuroko-Type Polymetallic Sulfide Deposit in a Submarine Silicic Caldera

Author: Lizasa, K., Fiske, R. S., Ishizuka, O., Yuasa, M., Hashimoto, J., Ishibashi, J., Naka, J., Horii, Y., Fujiwara, Y., Imai, A., and Koyama, S.
Published: 1999

44. Effects of switching weekly alendronate or risedronate to monthly minodronate in patients with rheumatoid arthritis: a 12-month prospective study

Author: Ebina, K., Noguchi, T., Hirao, M., Hashimoto, J., Kaneshiro, S., Yukioka, M., and Yoshikawa, H.
Published: 2016
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45. Congenital venous anomalies associated with retrocaval ureter: evaluation using computed tomography.

Author: Ichikawa, T., Ono, S., Nagafuji, Y., Kobayashi, M., Yashiro, H., Koizumi, J., Uchiyama, F., Fujii, Y., Hasebe, T., Terayama, H., and Hashimoto, J.
Abstract: Background: Retrocaval ureter is a rare congenital anomaly resulting from anomalous development of inferior vena cava (IVC) and not from anomalous of the ureter. The anomaly always occurs on the right side due to regression of right supracardinal vein and persistence of right posterior cardinal vein. Retrocaval ureter tends to be associated with various vena cava anomalies because of the embryogenesis. We aimed to identify the prevalence of associated congenital venous anomalies (CVA) resulting from cardinal vein development in adults with retrocaval ureter using computed tomography (CT) images. Materials and methods: The study included 22 adults with retrocaval ureter. We evaluated CT findings and determined the incidence of associated CVA using thin slice data sets from CT scanner with 64 or more detectors. We compared the prevalence of CVA in the retrocaval ureter group (mean age: 57 ± 19 years) and in the control group of 6189 adults with normal ureter (mean age: 66 ± 14 years). Results: In the retrocaval ureter group, 4 (18.2%) adults had CVA including double IVC, right double IVC, preisthmic IVC with horseshoe kidney, and preaortic iliac confluence. One of 2 adults with preaortic iliac confluence had right double right IVC. In the control group, 49 (0.79%) adults had CVA including 37 double IVC, 11 left IVC, and 1 IVC interruption azygos continuation. Fifteen horseshow kidneys were found. The prevalence of associated CVA in the retrocaval ureter group was higher than that in the control group (p < 0.001). Conclusions: Retrocaval ureter is frequently associated with CVA. Various CVA with retrocaval ureter could happen because of abnormal development of not only the right posterior or supra cardinal vein but also other cardinal veins. [ABSTRACT FROM AUTHOR]
Published: 2023
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46. Clinical efficacy and safety of monthly oral ibandronate 100 mg versus monthly intravenous ibandronate 1 mg in Japanese patients with primary osteoporosis

Author: Nakamura, T., Ito, M., Hashimoto, J., Shinomiya, K., Asao, Y., Katsumata, K., Hagino, H., Inoue, T., Nakano, T., Mizunuma, H., and for the MOVEST Study Group
Published: 2015
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47. Surfactant protein D suppresses lung cancer progression by downregulation of epidermal growth factor signaling

Author: Hasegawa, Y, Takahashi, M, Ariki, S, Asakawa, D, Tajiri, M, Wada, Y, Yamaguchi, Y, Nishitani, C, Takamiya, R, Saito, A, Uehara, Y, Hashimoto, J, Kurimura, Y, Takahashi, H, and Kuroki, Y
Published: 2015
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48. The outer disks of Herbig stars from the UV to NIR

Author: Grady, C., Fukagawa, M., Maruta, Y., Ohta, Y., Wisniewski, J., Hashimoto, J., Okamoto, Y., Momose, M., Currie, T., McElwain, M., Muto, T., Kotani, T., Kusakabe, N., Feldt, M., Sitko, M., Follette, K., Bonnefoy, M., Henning, T., Takami, M., Karr, J., Kwon, J., Kudo, T., Abe, L., Brandner, W., Brandt, T., Carson, J., Egner, S., Goto, M., Guyon, O., Hayano, Y., Hayashi, M., Hayashi, S., Hodapp, K., Ishii, M., Iye, M., Janson, M., Kandori, R., Knapp, G., Kuzuhara, M., Matsuo, T., Miyama, S., Morino, J.-I., Moro-Martín, A., Nishimura, T., Pyo, T.-S., Serabyn, E., Suenaga, T., Suto, H., Suzuki, R., Takahashi, Y. H., Takato, N., Terada, H., Thalmann, C., Tomono, D., Turner, E. L., Watanabe, M., Yamada, T., Takami, H., Usuda, T., and Tamura, M.
Published: 2015
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49. Congenital venous anomalies associated with retrocaval ureter: evaluation using computed tomography

Author: Ichikawa, T., primary, Ono, S., additional, Nagafuji, Y., additional, Kobayashi, M., additional, Yashiro, H., additional, Koizumi, J., additional, Uchiyama, F., additional, Fujii, Y., additional, Hasebe, T., additional, Terayama, H., additional, and Hashimoto, J., additional
Published: 2022
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50. Comparison of the effect of 18-month daily teriparatide administration on patients with rheumatoid arthritis and postmenopausal osteoporosis patients

Author: Ebina, K., Hashimoto, J., Shi, K., Kashii, M., Hirao, M., and Yoshikawa, H.
Published: 2014
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