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214 results on '"Stevens, D. J."'

1. A Study of Nine Triply Eclipsing Triples

Author

Rappaport, S. A., Borkovits, T., Gagliano, R., Jacobs, T. L., Tokovinin, A., Mitnyan, T., Komžik, R., Kostov, V. B., Powell, B. P., Torres, G., Terentev, I., Omohundro, M., Pribulla, T., Vanderburg, A., Kristiansen, M. H., Latham, D., Schwengeler, H. M., LaCourse, D., Bíró, I. B., Csányi, I., Czavalinga, D. R., Garai, Z., Pál, A., Rodriguez, J. E., and Stevens, D. J.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

In this work we report the independent discovery and analysis of nine new compact triply eclipsing triple star systems found with the TESS mission: TICs 47151245, 81525800, 99013269, 229785001, 276162169, 280883908, 294803663, 332521671, and 356324779. Each of these nine systems exhibits distinct third-body eclipses where the third (`tertiary') star occults the inner eclipsing binary (EB), or vice versa. We utilize a photodynamical analysis of the TESS photometry, archival photometric data, TESS eclipse timing variations of the EBs, available archival spectral energy distribution curves (SED), and, in some cases, newly acquired radial velocity observations, to solve for the parameters of all three stars, as well as most of the orbital elements. From these analyses we find that the outer orbits of all nine systems are viewed nearly edge on (i.e., within $\lesssim 4^\circ$), and 6 of the systems are coplanar to within $5^\circ$; the others have mutual inclination angles of $20^\circ$, $41^\circ$, and possibly $179^\circ$ (i.e., a retrograde outer orbit). The outer orbital periods range from 47.8 days to 604 days, with eccentricities spanning 0.004 to 0.61. The masses of all 18 EB stars are in the range of 0.9-2.6 M$_\odot$ and are mostly situated near the main sequence. By contrast, the masses and radii of the tertiary stars range from 1.4-2.8 M$_\odot$ and 1.5-13 R$_\odot$, respectively. We make use of the system parameters from these 9 systems, plus those from a comparable number of compact triply eclipsing triples published previously, to gain some statistical insight into their properties., Comment: 34 pages, 17 figures, 24 tables, accepted for publication to MNRAS

Published
2023
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2. Six New Compact Triply Eclipsing Triples Found With TESS

Author

Rappaport, S. A., Borkovits, T., Gagliano, R., Jacobs, T. L., Kostov, V. B., Powell, B. P., Terentev, I., Omohundro, M., Torres, G., Vanderburg, A., Mitnyan, T., Kristiansen, M. H., LaCourse, D., Schwengeler, H. M., Kaye, T. G., Pál, A., Pribulla, T., Bíró, I. B., Csányi, I., Garai, Z., Zasche, P., Maxted, P. F. L., Rodriguez, J. E., and Stevens, D. J.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

In this work we report the discovery and analysis of six new compact triply eclipsing triple star systems found with the TESS mission: TICs 37743815, 42565581, 54060695, 178010808, 242132789, and 456194776. All of these exhibit distinct third body eclipses where the inner eclipsing binary (EB) occults the third (`tertiary') star, or vice versa. We utilized the TESS photometry, archival photometric data, and available archival spectral energy distribution curves (SED) to solve for the properties of all three stars, as well as many of the orbital elements. We describe in detail our SED fits, search of the archival data for the outer orbital period, and the final global photodynamical analyses. From these analyses we find that all six systems are coplanar to within $0^\circ$ - $5^\circ$, and are viewed nearly edge on (i.e., within a couple of degrees). The outer orbital periods and eccentricities of the six systems are {$P_{\rm out}$ (days), $e$}: {68.7, 0.36}, {123, 0.16}, {60.7, 0.01}, {69.0, 0.29}, {41.5, 0.01}, {93.9, 0.29}, respectively, in the order the sources are listed above. The masses of all 12 EB stars were in the range of 0.7-1.8 M$_\odot$ and were situated near the main sequence. By contrast, the masses and radii of the tertiary stars ranged from 1.5-2.3 M$_\odot$ and 2.9-12 R$_\odot$, respectively. We use this information to estimate the occurrence rate of compact flat triple systems., Comment: 28 pages, 7 figures, 16 tables; accepted for publication in MNRAS

Published
2022
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3. Triply eclipsing triple stars in the northern TESS fields: TICs 193993801, 388459317 and 52041148

Author

Borkovits, T., Mitnyan, T., Rappaport, S. A., Pribulla, T., Powell, B. P., Kostov, V. B., Bíró, I. B., Csányi, I., Garai, Z., Gary, B. L., Kaye, T. G., Komžík, R., Terentev, I., Omohundro, M., Gagliano, R., Jacobs, T., Kristiansen, M. H., LaCourse, D., Schwengeler, H. M., Czavalinga, D., Seli, B., Huang, C. X., Pál, A., Vanderburg, A., Rodriguez, J. E., and Stevens, D. J.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

In this work we report the discovery and analysis of three new triply eclipsing triple star systems found with the TESS mission during its observations of the northern skies: TICs 193993801, 388459317, and 52041148. We utilized the TESS precision photometry of the binary eclipses and third-body eclipsing events, ground-based archival and follow-up photometric data, eclipse timing variations, archival spectral energy distributions, as well as theoretical evolution tracks in a joint photodynamical analysis to deduce the system masses and orbital parameters of both the inner and outer orbits. In one case (TIC 193993801) we also obtained radial velocity measurements of all three stars. This enabled us to `calibrate' our analysis approach with and without `truth' (i.e., RV) data. We find that the masses are good to 1-3% accuracy with RV data and 3-10% without the use of RV data. In all three systems we were able to find the outer orbital period before doing any detailed analysis by searching for a longer-term periodicity in the ASAS-SN archival photometry data -- just a few thousand ASAS-SN points enabled us to find the outer periods of 49.28 d, 89.86 d, and 177.0 d, respectively. From our full photodynamical analysis we find that all three systems are coplanar to within $1^\circ - 3^\circ$. The outer eccentricities of the three systems are 0.003, 0.10, and 0.62, respectively (i.e., spanning a factor of 200). The masses of the three stars {Aa, Ab, and B} in the three systems are: {1.31, 1.19, 1.34}, {1.82, 1.73, 2.19}, and {1.62, 1.48, 2.74} M$_\odot$, respectively., Comment: Accepted for publication in MNRAS. Tables 2-4, which will be published electronic only in the journal version, are fully available in this arXiv version

Published
2021
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4. A tidally tilted sectoral dipole pulsation mode in the eclipsing binary TIC 63328020

Author

Rappaport, S. A., Kurtz, D. W., Handler, G., Jones, D., Nelson, L. A., Saio, H., Fuller, J., Holdsworth, D. L., Vanderburg, A., Žák, J., Skarka, M., Aiken, J., Maxted, P. F. L., Stevens, D. J., Feliz, D. L., and Aliçavuş, F. Kahraman

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

We report the discovery of the third tidally tilted pulsator, TIC 63328020. Observations with the TESS satellite reveal binary eclipses with an orbital period of 1.1057 d, and $\delta$ Scuti-type pulsations with a mode frequency of 21.09533 d$^{-1}$. This pulsation exhibits a septuplet of orbital sidelobes as well as a harmonic quintuplet. Using the oblique pulsator model, the primary oscillation is identified as a sectoral dipole mode with $l = 1, |m| = 1$. We find the pulsating star to have $M_1 \simeq 2.5\, {\rm M}_\odot$, $R_1 \simeq 3 \, {\rm R}_\odot$, and $T_{\rm eff,1} \simeq 8000$ K, while the secondary has $M_2 \simeq 1.1 \, {\rm M}_\odot$, $R_2 \simeq 2 \, {\rm R}_\odot$, and $T_{\rm eff,2} \simeq 5600$ K. Both stars appear to be close to filling their respective Roche lobes. The properties of this binary as well as the tidally tilted pulsations differ from the previous two tidally tilted pulsators, HD74423 and CO Cam, in important ways. We also study the prior history of this system with binary evolution models and conclude that extensive mass transfer has occurred from the current secondary to the primary., Comment: 16 pages, 12 figures, and 8 tables

Published
2021
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5. CzeV1731: The unique doubly eclipsing quadruple system

Author

Zasche, P., Henzl, Z., Lehmann, H., Pepper, J., Powell, B. P., Kostov, V. B., Barclay, T., Wolf, M., Kucakova, H., Uhlar, R., Masek, M., Palafouta, S., Gazeas, K., Stassun, K. G., Gaudi, B. S., Rodriguez, J. E., and Stevens, D. J.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

We report the discovery of the relatively bright (V = 10.5 mag), doubly eclipsing 2+2 quadruple system CzeV1731. This is the third known system of its kind, in which the masses are determined for all four stars and both the inner and outer orbits are characterized. The inner eclipsing binaries are well-detached systems moving on circular orbits: pair A with period PA = 4.10843 d and pair B with PB = 4.67552 d. The inner binaries contain very similar components (q = 1.0), making the whole system a so-called double twin. The stars in pair B have slightly larger luminosities and masses and pair A shows deeper eclipses. All four components are main-sequence stars of F/G spectral type. The mutual orbit of the two pairs around the system barycenter has a period of about 34 yr and an eccentricity of about 0.38. However, further observations are needed to reveal the overall architecture of the whole system, including the mutual inclinations of all orbits. This is a promising target for interferometry to detect the double at about 59 mas and dMbol < 1 mag. (The RV and ETV data available via CDS), Comment: 5 pages, 6 figures, 2 Tables, published in: 2020A&A...642A..63Z

Published
2020
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6. Space Telescope and Optical Reverberation Mapping Project. XII. Broad-Line Region Modeling of NGC 5548

Author

Williams, P. R., Pancoast, A., Treu, T., Brewer, B. J., Peterson, B. M., Barth, A. J., Malkan, M. A., De Rosa, G., Horne, Keith, Kriss, G. A., Arav, N., Bentz, M. C., Cackett, E. M., Bontà, E. Dalla, Dehghanian, M., Done, C., Ferland, G. J., Grier, C. J., Kaastra, J., Kara, E., Kochanek, C. S., Mathur, S., Mehdipour, M., Pogge, R. W., Proga, D., Vestergaard, M., Waters, T., Adams, S. M., Anderson, M. D., Arévalo, P., Beatty, T. G., Bennert, V. N., Bigley, A., Bisogni, S., Borman, G. A., Boroson, T. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Brotherton, M., Brown, J. E., Brown, J. S., Canalizo, G., Carini, M. T., Clubb, K. I., Comerford, J. M., Corsini, E. M., Crenshaw, D. M., Croft, S., Croxall, K. V., Deason, A. J., De Lorenzo-Cáceres, A., Denney, K. D., Dietrich, M., Edelson, R., Efimova, N. V., Ely, J., Evans, P. A., Fausnaugh, M. M., Filippenko, A. V., Flatland, K., Fox, O. D., Gardner, E., Gates, E. L., Gehrels, N., Geier, S., Gelbord, J. M., Gonzalez, L., Gorjian, V., Greene, J. E., Grupe, D., Gupta, A., Hall, P. B., Henderson, C. B., Hicks, S., Holmbeck, E., Holoien, T. W. -S., Hutchison, T., Im, M., Jensen, J. J., Johnson, C. A., Joner, M. D., Jones, J., Kaspi, S., Kelly, P. L., Kennea, J. A., Kim, M., Kim, S., Kim, S. C., King, A., Klimanov, S. A., Knigge, C., Krongold, Y., Lau, M. W., Lee, J. C., Leonard, D. C., Li, Miao, Lira, P., Lochhaas, C., Ma, Zhiyuan, Manne-Nicholas, E. R., MacInnis, F., Mauerhan, J. C., McGurk, R., Hardy, I. M. Mc, Montuori, C., Morelli, L., Mosquera, A., Mudd, D., Müller-Sánchez, F., Nazarov, S. V., Norris, R. P., Nousek, J. A., Nguyen, M. L., Ochner, P., Okhmat, D. N., Papadakis, I., Parks, J. R., Pei, L., Penny, M. T., Pizzella, A., Poleski, R., Pott, J. -U., Rafter, S. E., Rix, H. -W., Runnoe, J., Saylor, D. A., Schimoia, J. S., Scott, B., Sergeev, S. G., Shappee, B. J., Shivvers, I., Siegel, M., Simonian, G. V., Siviero, A., Skielboe, A., Somers, G., Spencer, M., Starkey, D., Stevens, D. J., Sung, H. -I., Tayar, J., Tejos, N., Turner, C. S., Uttley, P., Van Saders, J., Vaughan, S. A., Vican, L., Villanueva Jr., S., Villforth, C., Weiss, Y., Woo, J. -H., Yan, H., Young, S., Yuk, H., Zheng, W., Zhu, W., and Zu, Y.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present geometric and dynamical modeling of the broad line region for the multi-wavelength reverberation mapping campaign focused on NGC 5548 in 2014. The dataset includes photometric and spectroscopic monitoring in the optical and ultraviolet, covering the H$\beta$, C IV, and Ly$\alpha$ broad emission lines. We find an extended disk-like H$\beta$ BLR with a mixture of near-circular and outflowing gas trajectories, while the C IV and Ly$\alpha$ BLRs are much less extended and resemble shell-like structures. There is clear radial structure in the BLR, with C IV and Ly$\alpha$ emission arising at smaller radii than the H$\beta$ emission. Using the three lines, we make three independent black hole mass measurements, all of which are consistent. Combining these results gives a joint inference of $\log_{10}(M_{\rm BH}/M_\odot) = 7.64^{+0.21}_{-0.18}$. We examine the effect of using the $V$ band instead of the UV continuum light curve on the results and find a size difference that is consistent with the measured UV-optical time lag, but the other structural and kinematic parameters remain unchanged, suggesting that the $V$ band is a suitable proxy for the ionizing continuum when exploring the BLR structure and kinematics. Finally, we compare the H$\beta$ results to similar models of data obtained in 2008 when the AGN was at a lower luminosity state. We find that the size of the emitting region increased during this time period, but the geometry and black hole mass remain unchanged, which confirms that the BLR kinematics suitably gauge the gravitational field of the central black hole., Comment: 26 pages, 19 figures, 1 table, accepted for publication in ApJ

Published
2020
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7. Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by the Galactic Plane eXoplanet (GPX) survey

Author

Benni, P., Burdanov, A. Y., Krushinsky, V. V., Bonfanti, A., Hébrard, G., Almenara, J. M., Dalal, S., Demangeon, O. D. S., Tsantaki, M., Pepper, J., Stassun, K. G., Vanderburg, A., Belinski, A., Kashaev, F., Barkaoui, K., Kim, T., Kang, W., Antonyuk, K., Dyachenko, V. V., Rastegaev, D. A., Beskakotov, A., Mitrofanova, A. A., Pozuelos, F. J., Kuznetsov, E. D., Popov, A., Kiefer, F., Wilson, P. A., Ricker, G., Vanderspek, R., Latham, D. W., Seager, S., Jenkins, J. M., Sokov, E., Sokova, I., Marchini, A., Papini, R., Salvaggio, F., Banfi, M., Baştürk, Ö., Torun, Ş., Yalçınkaya, S., Ivanov, K., Valyavin, G., Jehin, E., Gillon, M., Pakštienė, E., Hentunen, V. -P., Shadick, S., Bretton, M., Wünsche, A., Garlitz, J., Jongen, Y., Molina, D., Girardin, E., Horta, F. Grau, Naves, R., Benkhaldoun, Z., Joner, M. D., Spencer, M., Bieryla, A., Stevens, D. J., Jensen, E. L. N., Collins, K. A., Charbonneau, D., Quintana, E. V., Mullally, S. E., and Henze, C. E.

Subjects
Astrophysics - Solar and Stellar Astrophysics, Astrophysics - Earth and Planetary Astrophysics
Abstract

We announce the discovery of GPX-1 b, a transiting brown dwarf with a mass of $19.7\pm 1.6$ $M_{\mathrm{Jup}}$ and a radius of $1.47\pm0.10$ $R_{\mathrm{Jup}}$, the first sub-stellar object discovered by the Galactic Plane eXoplanet (GPX) survey. The brown dwarf transits a moderately bright ($V$ = 12.3 mag) fast-rotating F-type star with a projected rotational velocity $v\sin{ i_*}=40\pm10$ km/s. We use the isochrone placement algorithm to characterize the host star, which has effective temperature $7000\pm200$ K, mass $1.68\pm0.10$ $M_{\mathrm{Sun}}$, radius $1.56\pm0.10$ $R_{\mathrm{Sun}}$ and approximate age $0.27_{-0.15}^{+0.09}$ Gyr. GPX-1 b has an orbital period of $\sim$1.75 d, and a transit depth of $0.90\pm0.03$ %. We describe the GPX transit detection observations, subsequent photometric and speckle-interferometric follow-up observations, and SOPHIE spectroscopic measurements, which allowed us to establish the presence of a sub-stellar object around the host star. GPX-1 was observed at 30-min integrations by TESS in Sector 18, but the data is affected by blending with a 3.4 mag brighter star 42 arcsec away. GPX-1 b is one of about two dozen transiting brown dwarfs known to date, with a mass close to the theoretical brown dwarf/gas giant planet mass transition boundary. Since GPX-1 is a moderately bright and fast-rotating star, it can be followed-up by the means of Doppler tomography., Comment: 13 pages, 13 figures, accepted to MNRAS in May 2021

Published
2020
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8. Space Telescope and Optical Reverberation Mapping Project. IX. Velocity-Delay Maps for Broad Emission Lines in NGC 5548

Author

Horne, Keith, De Rosa, G., Peterson, B. M., Barth, A. J., Ely, J., Fausnaugh, M. M., Kriss, G. A., Pei, L., Adams, S. M., Anderson, M. D., Arevalo, P., Beatty, T G., Bennert, V. N., Bentz, M. C., Bigley, A., Bisogni, S., Borman, G. A., Boroson, T. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Brotherton, M., Brown, J. E., Brown, J. S., Cackett, E. M., Canalizo, G., Carini, M. T., Clubb, K. I., Comerford, J. M., Corsini, E. M., Crenshaw, D. M., Croft, S., Croxall, K. V., Bonta, E. Dalla, Deason, A. J., Dehghanian, M., De Lorenzo-Caceres, A., Denney, K. D., Dietrich, M., Done, C., Edelson, R., Efimova, N. V., Eracleous, M., Evans, P. A., Ferland, G. J., Filippenko, A. V., Flatland, K., Fox, O. D., Gardner, E., Gates, E. L., Gehrels, N., Geier, S., Gelbord, J. M., Goad, M. R., Gonzalez, L., Gorjian, V., Greene, J. E., Grier, C. J., Grupe, D., Gupta, A., Hall, P. B., Henderson, C. B., Hicks, S., Holmbeck, E., Holoien, T. W. -S., Hutchison, T., Im, M., Jensen, J. J., Johnson, C. A., Joner, M. D., Jones, J., Kaastra, J., Kaspi, S., Kelly, P. L., Kennea, J. A., Kim, M., Kim, S., Kim, S. C., King, A., Klimanov, S. A., Kochanek, C. S., Korista, K. T., Krongold, Y., Lau, M. W., Lee, J. C., Leonard, D. C., Li, Miao, Lira, P., Lochhaas, C., Ma, Zhiyuan, MacInnis, F., Malkan, M. A., Manne-Nicholas, E. R., Mathur, S., Mauerhan, J. C., McGurk, R., Hardy, I. M. Mc, Montuori, C., Morelli, L., Mosquera, A., Mudd, D., Mueller-Sanchez, F., Nazarov, S. V., Netzer, H., Norris, R. P., Nousek, J. A., Nguyen, M. L., Ochner, P., Okhmat, D. N., Pancoast, A., Papadakis, I., Parks, J. R., Penny, M. T., Pizzella, A., Pogge, R. W., Poleski, R., Pott, J. -U., Proga, D., Rafter, S. E., Rix, H. -W., Runnoe, J., Saylor, D. A., Schimoia, J. S., Schnuelle, K., Scott, B., Sergeev, S. G., Shappee, B. J., Shivvers, I., Siegel, M., Simonian, G. V., Siviero, A., Skielboe, A., Somers, G., Spencer, M., Starkey, D., Stevens, D. J., Strauss, M. A., Sung, H. -I., Tayar, J., Teems, K. G., Tejos, N., Treu, T., Turner, C. S., Uttley, P., Van Saders, J ., Vestergaard, M., Vican, L., Villanueva Jr, S., Villforth, C., Weiss, Y., Woo, J. -H., Yan, H., Young, S., Yuk, H., Zakamska, N. L., Zheng, W., Zhu, W., and Zu, Y.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We report velocity-delay maps for prominent broad emission lines, Ly_alpha, CIV, HeII and H_beta, in the spectrum of NGC5548. The emission-line responses inhabit the interior of a virial envelope. The velocity-delay maps reveal stratified ionization structure. The HeII response inside 5-10 light-days has a broad single-peaked velocity profile. The Ly_alpha, CIV, and H_beta responses peak inside 10 light-days, extend outside 20 light-days, and exhibit a velocity profile with two peaks separated by 5000 km/s in the 10 to 20 light-day delay range. The velocity-delay maps show that the M-shaped lag vs velocity structure found in previous cross-correlation analysis is the signature of a Keplerian disk with a well-defined outer edge at R=20 light-days. The outer wings of the M arise from the virial envelope, and the U-shaped interior of the M is the lower half of an ellipse in the velocity-delay plane. The far-side response is weaker than that from the near side, so that we see clearly the lower half, but only faintly the upper half, of the velocity--delay ellipse. The delay tau=(R/c)(1-sin(i))=5 light-days at line center is from the near edge of the inclined ring, giving the inclination i=45 deg. A black hole mass of M=7x10^7 Msun is consistent with the velocity-delay structure. A barber-pole pattern with stripes moving from red to blue across the CIV and possibly Ly_alpha line profiles suggests the presence of azimuthal structure rotating around the far side of the broad-line region and may be the signature of precession or orbital motion of structures in the inner disk. Further HST observations of NGC 5548 over a multi-year timespan but with a cadence of perhaps 10 days rather than 1 day could help to clarify the nature of this new AGN phenomenon., Comment: 19 pages, 9 figures, ApJ in press

Published
2020
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9. Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum

Author

Kriss, G. A., De Rosa, G., Ely, J., Peterson, B. M., Kaastra, J., Mehdipour, M., Ferland, G. J., Dehghanian, M., Mathur, S., Edelson, R., Korista, K. T., Arav, N., Barth, A. J., Bentz, M. C., Brandt, W. N., Crenshaw, D. M., Bontà, E. Dalla, Denney, K. D., Done, C., Eracleous, M., Fausnaugh, M. M., Gardner, E., Goad, M. R., Grier, C. J., Horne, Keith, Kochanek, C. S., Mchardy, I. M., Netzer, H., Pancoast, A., Pei, L., Pogge, R. W., Proga, D., Silva, C., Tejos, N., Vestergaard, M., Adams, S. M., Anderson, M. D., Arévalo, P., Beatty, T G., Behar, E., Bennert, V. N., Bianchi, S., Bigley, A., Bisogni, S., Boissay-Malaquin, R., Borman, G. A., Bottorff, M. C., Breeveld, A. A., Brotherton, M., Brown, J. E., Brown, J. S., Cackett, E. M., Canalizo, G., Cappi, M., Carini, M. T., Clubb, K. I., Comerford, J. M., Coker, C. T., Corsini, E. M., Costantini, E., Croft, S., Croxall, K. V., Deason, A. J., De Lorenzo-Cáceres, A., De Marco, B., Dietrich, M., Di Gesu, L., Ebrero, J., Evans, P. A., Filippenko, A. V., Flatland, K., Gates, E. L., Gehrels, N., Geier, Z S., Gelbord, J. M., Gonzalez, L., Gorjian, V., Grupe, D., Gupta, A., Hall, P. B., Henderson, C. B., Hicks, S., Holmbeck, E., Holoien, T. W. -S., Hutchison, T. A., Im, M., Jensen, J. J., Johnson, C. A., Joner, M. D., Kaspi, S., Kelly, B. C., Kelly, P. L., Kennea, J. A., Kim, M., Kim, S. C., Kim, S. Y., King, A., Klimanov, S. A., Krongold, Y., Lau, M. W., Lee, J. C., Leonard, D. C., Li, Miao, Lira, P., Lochhaas, C., Ma, Zhiyuan, Macinnis, F., Malkan, M. A., Manne-Nicholas, E. R., Matt, G., Mauerhan, J. C., Mcgurk, R., Montuori, C., Morelli, L., Mosquera, A., Mudd, D., Müller-Sánchez, F., Nazarov, S. V., Norris, R. P., Nousek, J. A., Nguyen, M. L., Ochner, P., Okhmat, D. N., Paltani, S., Parks, J. R., Pinto, C., Pizzella, A., Poleski, R., Ponti, G., Pott, J. -U., Rafter, S. E., Rix, H. -W., Runnoe, J., Saylor, D. A., Schimoia, J. S., Schnülle, K., Scott, B., Sergeev, S. G., Shappee, B. J., Shivvers, I., Siegel, M., Simonian, G. V., Siviero, A., Skielboe, A., Somers, G., Spencer, M., Starkey, D., Stevens, D. J., Sung, H. -I., Tayar, J., Teems, K. G., Treu, T., Turner, C. S., Uttley, P., Van Saders, J ., Vican, L., Villforth, C., Villanueva Jr., S., Walton, D. J., Waters, T., Weiss, Y., Woo, J. -H., Yan, H., Yuk, H., Zheng, W., Zhu, W., and Zu, Y.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We model the ultraviolet spectra of the Seyfert 1 galaxy NGC~5548 obtained with the Hubble Space Telescope during the 6-month reverberation-mapping campaign in 2014. Our model of the emission from NGC 5548 corrects for overlying absorption and deblends the individual emission lines. Using the modeled spectra, we measure the response to continuum variations for the deblended and absorption-corrected individual broad emission lines, the velocity-dependent profiles of Ly$\alpha$ and C IV, and the narrow and broad intrinsic absorption features. We find that the time lags for the corrected emission lines are comparable to those for the original data. The velocity-binned lag profiles of Ly$\alpha$ and C IV have a double-peaked structure indicative of a truncated Keplerian disk. The narrow absorption lines show delayed response to continuum variations corresponding to recombination in gas with a density of $\sim 10^5~\rm cm^{-3}$. The high-ionization narrow absorption lines decorrelate from continuum variations during the same period as the broad emission lines. Analyzing the response of these absorption lines during this period shows that the ionizing flux is diminished in strength relative to the far-ultraviolet continuum. The broad absorption lines associated with the X-ray obscurer decrease in strength during this same time interval. The appearance of X-ray obscuration in $\sim\,2012$ corresponds with an increase in the luminosity of NGC 5548 following an extended low state. We suggest that the obscurer is a disk wind triggered by the brightening of NGC 5548 following the decrease in size of the broad-line region during the preceding low-luminosity state., Comment: 50 pages, 30 figures, uses aastex62.cls. Accepted for publication in ApJ, 07/06/2019. High-level products page in MAST will go live after 7/15/2019. Replaced Figure 4 on 7/12/2019 to be more red/green color-blind friendly

Published
2019
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10. Velocity-resolved reverberation mapping of five bright Seyfert 1 galaxies

Author

De Rosa, G., Fausnaugh, M. M., Grier, C. J., Peterson, B. M., Denney, K. D., Horne, Keith, Bentz, M. C., Ciroi, S., Bonta`, E. Dalla, Joner, M. D., Kaspi, S., Kochanek, C. S., Pogge, R. W., Sergeev, S. G., Vestergaard, M., Adams, S. M., Antognini, J., Salvo, C. Araya, Armstrong, E., Bae, J., Barth, A. J., Beatty, T. G., Bhattacharjee, A., Borman, G. A., Boroson, T. A., Bottorff, M. C., Brown, J. E., Brown, J. S., Brotherton, M. S., Coker, C. T., Clanton, C., Cracco, V., Crawford, S. M., Croxall, K. V., Eftekharzadeh, S., Eracleous, M., Fiorenza, S. L., Frassati, A., Hawkins, K., Henderson, C. B., Holoien, T. W. -S., Hutchison, T., Kellar, J., Kilerci-Eser, E., Kim, S., King, A. L., La Mura, G., Laney, C. D., Li, M., Lochhaas, C., Ma, Z., MacInnis, F., Manne-Nicholas, E. R., Mason, M., McGraw, S. M., Mogren, K., Montouri, C., Moody, J. W., Mosquera, A. M., Mudd, D., Musso, R., Nazarov, S. V., Nguyen, M. L., Ochner, P., Okhmat, D. N., Onken, C. A., Ou-Yang, B., Pancoast, A., Pei, L., Penny, M., Poleski, R., Portaluri, E., Prieto, J. -L., Price-Whelan, A. M., Pulatova, N. G., Rafter, S., Roettenbacher, R. M., Romero-Colmenero, E., Runnoe, J., Schimoia, J. S., Shappee, B. J., Sherf, N., Simonian, G. V., Siviero, A., Skowron, D. M., Skowron, J., Somers, G., Spencer, M., Starkey, D. A., Stevens, D. J., Stoll, R., Tamajo, E., Tayar, J., van Saders, J. L., Valenti, S., Villanueva, Jr., S., Villforth, C., Weiss, Y., Winkler, H., Zastrow, J., Zhu, W., and Zu, Y.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

We present the first results from a reverberation-mapping campaign undertaken during the first half of 2012, with additional data on one AGN (NGC 3227) from a 2014 campaign. Our main goals are (1) to determine the black hole masses from continuum-Hbeta reverberation signatures, and (2) to look for velocity-dependent time delays that might be indicators of the gross kinematics of the broad-line region. We successfully measure Hbeta time delays and black hole masses for five AGNs, four of which have previous reverberation mass measurements. The values measured here are in agreement with earlier estimates, though there is some intrinsic scatter beyond the formal measurement errors. We observe velocity dependent Hbeta lags in each case, and find that the patterns have changed in the intervening five years for three AGNs that were also observed in 2007., Comment: Accepted for publication on ApJ; 32 pages, 16 figures, 10 tables

Published
2018
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11. ASAS-SN Identification of a Detached Eclipsing Binary System with a $\sim7.3$ Year Period

Author

Jayasinghe, T., Stanek, K. Z., Kochanek, C. S., Shappee, B. J., Holoien, T. W. -S., Thompson, T. A., Prieto, J. L., Dong, Subo, and Stevens, D. J.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

We report the identification of a new, long period detached eclipsing binary by the All-Sky Automated Survey for Supernovae (ASAS-SN). Combining V-band photometry from ASAS-SN, ASAS and KELT, we constructed a light curve spanning 2006-2018. ASASSN-V J192543.72+402619.0 is an eccentric detached eclipsing binary with an orbital period of $P\sim7.3$ yr, a minimum orbital eccentricity of $e_{min}\sim0.2$ and a primary eclipse lasting $\sim160$ d. We also detect a secondary eclipse that is $\sim 0.6$ mag shallower. Multi-band photometry suggests that the more luminous component of the binary is an M-giant. Further photometric and spectroscopic observations are encouraged., Comment: 4 pages, 1 figure. Submitted to RNAAS

Published
2018

12. Necklaces of $\mathcal{PT}$-symmetric dimers

Author

Stevens, D. J. Nodal, Ávila, Benjamín Jaramillo, and Rodríguez-Lara, B. M.

Subjects
Physics - Optics
Abstract

We study light propagation through cyclic arrays, composed by copies of a given $\mathcal{PT}$-symmetric dimer, using a group theoretical approach and finite element modeling. The theoretical mode-coupling analysis suggest the use of these devices as output port replicators where the dynamics are controlled by the impinging light field. This is confirmed to good agreement with finite element propagation in an experimentally feasible necklace of passive $\mathcal{PT}$-symmetric dimers constructed from lossy and lossless waveguides., Comment: 10 pages, 4 figures

Published
2017
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13. Periodic Eclipses of the Young Star PDS 110 Discovered with WASP and KELT Photometry

Author

Osborn, H. P., Rodriguez, J. E., Kenworthy, M. A., Kennedy, G. M., Mamajek, E. E., Robinson, C. E., Espaillat, C. C., Armstrong, D. J., Shappee, B. J., Bieryla, A., Latham, D. W., Anderson, D. R., Beatty, T. G., Berlind, P., Calkins, M. L., Esquerdo, G. A., Gaudi, B. S., Hellier, C., Holoien, T. W. -S., James, D., Kochanek, C. S., Kuhn, R. B., Lund, M. B., Pepper, J., Pollacco, D. L., Prieto, J. L., Siverd, R. J., Stassun, K. G., Stevens, D. J., Stanek, K. Z., and West, R. G.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We report the discovery of eclipses by circumstellar disc material associated with the young star PDS 110 in the Ori OB1a association using the SuperWASP and KELT surveys. PDS 110 (HD 290380, IRAS 05209-0107) is a rare Fe/Ge-type star, a ~10 Myr-old accreting intermediate-mass star showing strong infrared excess (L$_{\rm IR}$/L$_{\rm bol}$ ~ 0.25). Two extremely similar eclipses with a depth of ~30\% and duration ~25 days were observed in November 2008 and January 2011. We interpret the eclipses as caused by the same structure with an orbital period of $808\pm2$ days. Shearing over a single orbit rules out diffuse dust clumps as the cause, favouring the hypothesis of a companion at ~2AU. The characteristics of the eclipses are consistent with transits by an unseen low-mass (1.8-70M$_{Jup}$) planet or brown dwarf with a circum-secondary disc of diameter ~0.3 AU. The next eclipse event is predicted to take place in September 2017 and could be monitored by amateur and professional observatories across the world., Comment: 10 pages, 6 figures, submitted to MNRAS 9th Feb 2017. Accepted 18th May 2017

Published
2017
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14. WASP-167b/KELT-13b: Joint discovery of a hot Jupiter transiting a rapidly-rotating F1V star

Author

Temple, L. Y., Hellier, C., Albrow, M. D., Anderson, D. R., Bayliss, D., Beatty, T. G., Bieryla, A., Brown, D. J. A., Cargile, P. A., Cameron, A. Collier, Collins, K. A., Colón, K. D., Curtis, I. A., D'Ago, G., Delrez, L., Eastman, J., Gaudi, B. S., Gillon, M., Gregorio, J., James, D., Jehin, E., Joner, M. D., Kielkopf, J. F., Kuhn, R. B., Labadie-Bartz, J., Latham, D. W., Lendl, M., Lund, M. B., Malpas, A. L., Maxted, P. F. L., Myers, G., Oberst, T. E., Pepe, F., Pepper, J., Pollacco, D., Queloz, D., Rodriguez, J. E., Ségransan, D., Siverd, R. J., Smalley, B., Stassun, K. G., Stevens, D. J., Stockdale, C., Tan, T. G., Triaud, A. H. M. J., Udry, S., Villanueva Jr, S., West, R. G., and Zhou, G.

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We report the joint WASP/KELT discovery of WASP-167b/KELT-13b, a transiting hot Jupiter with a 2.02-d orbit around a $V$ = 10.5, F1V star with [Fe/H] = 0.1 $\pm$ 0.1. The 1.5 R$_{\rm Jup}$ planet was confirmed by Doppler tomography of the stellar line profiles during transit. We place a limit of $<$ 8 M$_{\rm Jup}$ on its mass. The planet is in a retrograde orbit with a sky-projected spin-orbit angle of $\lambda = -165^{\circ} \pm 5^{\circ}$. This is in agreement with the known tendency for orbits around hotter stars to be more likely to be misaligned. WASP-167/KELT-13 is one of the few systems where the stellar rotation period is less than the planetary orbital period. We find evidence of non-radial stellar pulsations in the host star, making it a $\delta$-Scuti or $\gamma$-Dor variable. The similarity to WASP-33, a previously known hot-Jupiter host with pulsations, adds to the suggestion that close-in planets might be able to excite stellar pulsations., Comment: 11 pages, 8 figures, accepted by MNRAS

Published
2017
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15. Space Telescope and Optical Reverberation Mapping Project. VII. Understanding the UV anomaly in NGC 5548 with X-Ray Spectroscopy

Author

Mathur, S., Gupta, A., Page, K., Pogge, R. W., Krongold, Y., Goad, M. R., Adams, S. M., Anderson, M. D., Arevalo, P., Barth, A. J., Bazhaw, C., Beatty, T. G., Bentz, M. C., Bigley, A., Bisogni, S., Borman, G. A., Boroson, T. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Brown, J. E., Brown, J. S., Cackett, E. M., Canalizo, G., Carini, M. T., Clubb, K. I., Comerford, J. M., Coker, C. T., Corsini, E. M., Crenshaw, D. M., Croft, S., Croxall, K. V., Bonta, E. Dalla, Deason, A. J., Denney, K. D., De Lorenzo-Caceres, A., De Rosa, G., Dietrich, M., Edelson, R., Ely, J., Eracleous, M., Evans, P. A., Fausnaugh, M. M., Ferland, G. J., Filippenko, A. V., Flatland, K., Fox, O. D., Gates, E. L., Gehrels, N., Geier, S., Gelbord, J. M., Gorjian, V., Greene, J. E., Grier, C. J., Grupe, D., Hall, P. B., Henderson, C. B., Hicks, S., Holmbeck, E., Holoien, T. W. -S., Horenstein, D., Horne, Keith, Hutchison, T., Im, M., Jensen, J. J., Johnson, C. A., Joner, M. D., Jones, J., Kaastra, J., Kaspi, S., Kelly, B. C., Kelly, P. L., Kennea, J. A., Kim, M., Kim, S., Kim, S. C., King, A., Klimanov, S. A., Kochanek, C. S., Korista, K. T., Kriss, G. A., Lau, M. W., Lee, J. C., Leonard, D. C., Li, M., Lira, P., Ma, Z., MacInnis, F., Manne-Nicholas, E. R., Malkan, M. A., Mauerhan, J. C., McGurk, R., McHardy, I. M., Montouri, C., Morelli, L., Mosquera, A., Mudd, D., Muller-Sanchez, F., Musso, R., Nazarov, S. V., Netzer, H., Nguyen, M. L., Norris, R. P., Nousek, J. A., Ochner, P., Okhmat, D. N., Ou-Yang, B., Pancoast, A., Papadakis, I., Parks, J. R., Pei, L., Peterson, B. M., Pizzella, A., Poleski, R., Pott, J. -U., Rafter, S. E., Rix, H. -W., Runnoe, J., Saylor, D. A., Schimoia, J. S., Schnülle, K., Sergeev, S. G., Shappee, B. J., Shivvers, I., Siegel, M., Simonian, G. V., Siviero, A., Skielboe, A., Somers, G., Spencer, M., Starkey, D., Stevens, D. J., Sung, H. -I., Tayar, J., Tejos, N., Turner, C. S., Uttley, P., Van Saders, J., Vestergaard, M., Vican, L., VillanuevaJr., S., Villforth, C., Weiss, Y., Woo, J. -H., Yan, H., Young, S., Yuk, H., Zheng, W., Zhu, W., and Zu, Y.

Subjects
Astrophysics - Astrophysics of Galaxies
Abstract

During the Space Telescope and Optical Reverberation Mapping Project (STORM) observations of NGC 5548, the continuum and emission-line variability became de-correlated during the second half of the 6-month long observing campaign. Here we present Swift and Chandra X-ray spectra of NGC 5548 obtained as a part of the campaign. The Swift spectra show that excess flux (relative to a power-law continuum) in the soft X-ray band appears before the start of the anomalous emission-line behavior, peaks during the period of the anomaly, and then declines. This is a model-independent result suggesting that the soft excess is related to the anomaly. We divide the Swift data into on- and off-anomaly spectra to characterize the soft excess via spectral fitting. The cause of the spectral differences is likely due to a change in the intrinsic spectrum rather than being due to variable obscuration or partial covering. The Chandra spectra have lower signal-to-noise ratios, but are consistent with Swift data. Our preferred model of the soft excess is emission from an optically thick, warm Comptonizing corona, the effective optical depth of which increases during the anomaly. This model simultaneously explains all the three observations: the UV emission line flux decrease, the soft-excess increase, and the emission line anomaly., Comment: ApJ in press. Replaced with the accepted version

Published
2017
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16. Absolute dimensions of the eccentric eclipsing binary V541 Cygni

Author

Torres, G., McGruder, C. D., Siverd, R. J., Rodriguez, J. E., Pepper, J., Stevens, D. J., Stassun, K. G., Lund, M. B., and James, D.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

We report new spectroscopic and photometric observations of the main-sequence, detached, eccentric, double-lined eclipsing binary V541 Cyg (P = 15.34 days, e = 0.468). Using these observations together with existing measurements we determine the component masses and radii to better than 1% precision: M1 = 2.335 +0.017/-0.013 MSun, M2 = 2.260 +0.016/-0.013 MSun, R1 = 1.859 +0.012/-0.009 RSun, and R2 = 1.808 +0.015/-0.013 RSun. The nearly identical B9.5 stars have estimated temperatures of 10650 +/- 200 K and 10350 +/- 200 K. A comparison of these properties with current stellar evolution models shows excellent agreement at an age of about 190 Myr and [Fe/H] approximately -0.18. Both components are found to be rotating at the pseudo-synchronous rate. The system displays a slow periastron advance that is dominated by General Relativity (GR), and has previously been claimed to be slower than predicted by theory. Our new measurement, dw/dt = 0.859 +0.042/-0.017 deg/century, has an 88% contribution from GR and agrees with the expected rate within the uncertainties. We also clarify the use of the gravity darkening coefficients in the light-curve fitting program EBOP, a version of which we use here., Comment: 11 pages in emulateapj format, including figures and tables. Accepted for publication in the Astrophysical Journal. Further clarification added about the use of gravity darkening in EBOP

Published
2016
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17. A study of nine compact triply eclipsing triples

Author

Rappaport, S A, primary, Borkovits, T, additional, Gagliano, R, additional, Jacobs, T L, additional, Tokovinin, A, additional, Mitnyan, T, additional, Komžík, R, additional, Kostov, V B, additional, Powell, B P, additional, Torres, G, additional, Terentev, I, additional, Omohundro, M, additional, Pribulla, T, additional, Vanderburg, A, additional, Kristiansen, M H, additional, Latham, D, additional, Schwengeler, H M, additional, LaCourse, D, additional, Bíró, I B, additional, Csányi, I, additional, Czavalinga, D R, additional, Garai, Z, additional, Pál, A, additional, Rodriguez, J E, additional, and Stevens, D J, additional

Published
2023
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18. Studies into Using Manure in a Biorefinery Concept

Author

Chen, S., Wen, Z., Liao, W., Liu, C., Kincaid, R. L., Harrison, J. H., Elliott, D. C., Brown, M. D., Stevens, D. J., Davison, Brian H., editor, Evans, Barbara R., editor, Finkelstein, Mark, editor, and McMillan, James D., editor

Published
2005
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20. Six new compact triply eclipsing triples found with TESS

Author

Rappaport, S A, primary, Borkovits, T, additional, Gagliano, R, additional, Jacobs, T L, additional, Kostov, V B, additional, Powell, B P, additional, Terentev, I, additional, Omohundro, M, additional, Torres, G, additional, Vanderburg, A, additional, Mitnyan, T, additional, Kristiansen, M H, additional, LaCourse, D, additional, Schwengeler, H M, additional, Kaye, T G, additional, Pál, A, additional, Pribulla, T, additional, Bíró, I B, additional, Csányi, I, additional, Garai, Z, additional, Zasche, P, additional, Maxted, P F L, additional, Rodriguez, J E, additional, and Stevens, D J, additional

Published
2022
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21. Triply eclipsing triple stars in the northern TESS fields: TICs 193993801, 388459317, and 52041148

Author

Borkovits, T, primary, Mitnyan, T, additional, Rappaport, S A, additional, Pribulla, T, additional, Powell, B P, additional, Kostov, V B, additional, Bíró, I B, additional, Csányi, I, additional, Garai, Z, additional, Gary, B L, additional, Kaye, T G, additional, Komžík, R, additional, Terentev, I, additional, Omohundro, M, additional, Gagliano, R, additional, Jacobs, T, additional, Kristiansen, M H, additional, LaCourse, D, additional, Schwengeler, H M, additional, Czavalinga, D, additional, Seli, B, additional, Huang, C X, additional, Pál, A, additional, Vanderburg, A, additional, Rodriguez, J E, additional, and Stevens, D J, additional

Published
2021
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23. Discovery of a young low-mass brown dwarf transiting a fast-rotating F-type star by the Galactic Plane eXoplanet (GPX) survey

Author

Benni, P, primary, Burdanov, A Y, additional, Krushinsky, V V, additional, Bonfanti, A, additional, Hébrard, G, additional, Almenara, J M, additional, Dalal, S, additional, Demangeon, O D S, additional, Tsantaki, M, additional, Pepper, J, additional, Stassun, K G, additional, Vanderburg, A, additional, Belinski, A, additional, Kashaev, F, additional, Barkaoui, K, additional, Kim, T, additional, Kang, W, additional, Antonyuk, K, additional, Dyachenko, V V, additional, Rastegaev, D A, additional, Beskakotov, A, additional, Mitrofanova, A A, additional, Pozuelos, F J, additional, Kuznetsov, E D, additional, Popov, A, additional, Kiefer, F, additional, Wilson, P A, additional, Ricker, G, additional, Vanderspek, R, additional, Latham, D W, additional, Seager, S, additional, Jenkins, J M, additional, Sokov, E, additional, Sokova, I, additional, Marchini, A, additional, Papini, R, additional, Salvaggio, F, additional, Banfi, M, additional, Baştürk, Ö, additional, Torun, Ş, additional, Yalçınkaya, S, additional, Ivanov, K, additional, Valyavin, G, additional, Jehin, E, additional, Gillon, M, additional, Pakštienė, E, additional, Hentunen, V-P, additional, Shadick, S, additional, Bretton, M, additional, Wünsche, A, additional, Garlitz, J, additional, Jongen, Y, additional, Molina, D, additional, Girardin, E, additional, Grau Horta, F, additional, Naves, R, additional, Benkhaldoun, Z, additional, Joner, M D, additional, Spencer, M, additional, Bieryla, A, additional, Stevens, D J, additional, Jensen, E L N, additional, Collins, K A, additional, Charbonneau, D, additional, Quintana, E V, additional, Mullally, S E, additional, and Henze, C E, additional

Published
2021
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24. A tidally tilted sectoral dipole pulsation mode in the eclipsing binary TIC 63328020

Author

Rappaport, S A, Kurtz, Donald Wayne, Handler, G, Jones, D, Nelson, L A, Saio, H, Fuller, J, Holdsworth, Daniel Luke, Vanderburg, A, Zak, J, Skarka, M, Aiken, J, Maxted, P F L, Stevens, D J, Feliz, D L, Kahraman Alicavus, F, Rappaport, S A, Kurtz, Donald Wayne, Handler, G, Jones, D, Nelson, L A, Saio, H, Fuller, J, Holdsworth, Daniel Luke, Vanderburg, A, Zak, J, Skarka, M, Aiken, J, Maxted, P F L, Stevens, D J, Feliz, D L, and Kahraman Alicavus, F

Abstract

We report the discovery of the third tidally tilted pulsator, TIC 63328020. Observations with the TESS satellite reveal binary eclipses with an orbital period of 1.1057 d, and δ Scuti-type pulsations with a mode frequency of 21.09533 d −1 . This pulsation exhibits a septuplet of orbital sidelobes as well as a harmonic quintuplet. Using the oblique pulsator model, the primary oscillation is identified as a sectoral dipole mode with l=1,|m|=1 . We find the pulsating star to have M1≃2.5M⊙ , R1≃3R⊙ , and Teff,1≃8000 K, while the secondary has M2≃1.1M⊙ , R2≃2R⊙ , and Teff,2≃5600 K. Both stars appear to be close to filling their respective Roche lobes. The properties of this binary as well as the tidally tilted pulsations differ from the previous two tidally tilted pulsators, HD74423 and CO Cam, in important ways. We also study the prior history of this system with binary evolution models and conclude that extensive mass transfer has occurred from the current secondary to the primary.

Published
2021

25. Discovery of a Young Low-Mass Brown Dwarf Transiting a Fast-Rotating F-Type Star by the Galactic Plane eXoplanet (GPX) Survey

Author

Benni, P., Burdanov, A. Y., Krushinsky, V. V., Bonfanti, A., Hébrard, G., Almenara, J. M., Dalal, S., Demangeon, O. D. S., Tsantaki, M., Pepper, J., Stassun, K. G., Vanderburg, A., Belinski, A., Kashaev, F., Barkaoui, K., Kim, T., Kang, W., Antonyuk, K., Dyachenko, V. V., Rastegaev, D. A., Beskakotov, A., Mitrofanova, A. A., Pozuelos, F. J., Kuznetsov, E. D., Popov, A., Kiefer, F., Wilson, P. A., Ricker, G., Vanderspek, R., Latham, D. W., Seager, S., Jenkins, J. M., Sokov, E., Sokova, I., Marchini, A., Papini, R., Salvaggio, F., Banfi, M., Baştürk, Ö., Torun, Ş., Yalçınkaya, S., Ivanov, K., Valyavin, G., Jehin, E., Gillon, M., Pakštiene, E., Hentunen, V. -P., Shadick, S., Bretton, M., Wünsche, A., Garlitz, J., Jongen, Y., Molina, D., Girardin, E., Grau Horta, F., Naves, R., Benkhaldoun, Z., Joner, M. D., Spencer, M., Bieryla, A., Stevens, D. J., Jensen, E. L. N., Collins, K. A., Charbonneau, D., Quintana, E. V., Mullally, S. E., Henze, C. E., Benni, P., Burdanov, A. Y., Krushinsky, V. V., Bonfanti, A., Hébrard, G., Almenara, J. M., Dalal, S., Demangeon, O. D. S., Tsantaki, M., Pepper, J., Stassun, K. G., Vanderburg, A., Belinski, A., Kashaev, F., Barkaoui, K., Kim, T., Kang, W., Antonyuk, K., Dyachenko, V. V., Rastegaev, D. A., Beskakotov, A., Mitrofanova, A. A., Pozuelos, F. J., Kuznetsov, E. D., Popov, A., Kiefer, F., Wilson, P. A., Ricker, G., Vanderspek, R., Latham, D. W., Seager, S., Jenkins, J. M., Sokov, E., Sokova, I., Marchini, A., Papini, R., Salvaggio, F., Banfi, M., Baştürk, Ö., Torun, Ş., Yalçınkaya, S., Ivanov, K., Valyavin, G., Jehin, E., Gillon, M., Pakštiene, E., Hentunen, V. -P., Shadick, S., Bretton, M., Wünsche, A., Garlitz, J., Jongen, Y., Molina, D., Girardin, E., Grau Horta, F., Naves, R., Benkhaldoun, Z., Joner, M. D., Spencer, M., Bieryla, A., Stevens, D. J., Jensen, E. L. N., Collins, K. A., Charbonneau, D., Quintana, E. V., Mullally, S. E., and Henze, C. E.

Abstract

We announce the discovery of GPX-1 b, a transiting brown dwarf with a mass of 19.7 ± 1.6 MJup and a radius of 1.47 ± 0.10 RJup, the first substellar object discovered by the Galactic Plane eXoplanet (GPX) survey. The brown dwarf transits a moderately bright (V = 12.3 mag) fast-rotating F-type star with a projected rotational velocity v sin i∗ = 40 ± 10 km s−1. We use the isochrone placement algorithm to characterize the host star, which has effective temperature 7000 ± 200 K, mass 1.68 ± 0.10 M☉, radius 1.56 ± 0.10 R☉, and approximate age 0.27-0.15+0.09 Gyr. GPX-1 b has an orbital period of -1.75 d and a transit depth of 0.90 ± 0.03 per cent. We describe the GPX transit detection observations, subsequent photometric and speckle-interferometric follow-up observations, and SOPHIE spectroscopic measurements, which allowed us to establish the presence of a substellar object around the host star. GPX-1 was observed at 30-min integrations by TESS in Sector 18, but the data are affected by blending with a 3.4 mag brighter star 42 arcsec away. GPX-1 b is one of about two dozen transiting brown dwarfs known to date, with a mass close to the theoretical brown dwarf/gas giant planet mass transition boundary. Since GPX-1 is a moderately bright and fast-rotating star, it can be followed-up by the means of the Doppler tomography. © 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society.

Published
2021

26. Space Telescope and Optical Reverberation Mapping Project. IX. Velocity-Delay Maps for Broad Emission Lines in NGC 5548

Author

Horne, Keith, Rosa, G. De, Peterson, B. M., Barth, A. J., Ely, J., Fausnaugh, M. M., Kriss, G. A., Pei, L., Bentz, M. C., Cackett, E. M., Edelson, R., Eracleous, M., Goad, M. R., Grier, C. J., Kaastra, J., Kochanek, C. S., Krongold, Y., Mathur, S., Netzer, H., Proga, D., Tejos, N., Vestergaard, M., Villforth, C., Adams, S. M., Anderson, M. D., Arevalo, P., Beatty, T. G., Bennert, V. N., Bigley, A., Bisogni, S., Borman, G. A., Boroson, T. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Brotherton, M., Brown, J. E., Brown, J. S., Canalizo, G., Carini, M. T., Clubb, K. I., Comerford, J. M., Corsini, E. M., Crenshaw, D. M., Croft, S., Croxall, K. V., Bonta, E. Dalla, Deason, A. J., Dehghanian, M., Lorenzo-Caceres, A. De, Denney, K. D., Dietrich, M., Done, C., Efimova, N. V., Evans, P. A., Ferland, G. J., Filippenko, A. V., Flatland, K., Fox, O. D., Gardner, E., Gates, E. L., Gehrels, N., Geier, S., Gelbord, J. M., Gonzalez, L., Gorjian, V., Greene, J. E., Grupe, D., Gupta, A., Hall, P. B., Henderson, C. B., Hicks, S., Holmbeck, E., Holoien, T. W. -S., Hutchison, T., Im, M., Jensen, J. J., Johnson, C. A., Joner, M. D., Jones, J., Kaspi, S., Kelly, P. L., Kennea, J. A., Kim, M., Kim, S., Kim, S. C., King, A., Klimanov, S. A., Korista, K. T., Lau, M. W., Lee, J. C., Leonard, D. C., Li, Miao, Lira, P., Lochhaas, C., Ma, Zhiyuan, MacInnis, F., Malkan, M. A., Manne-Nicholas, E. R., Mauerhan, J. C., McGurk, R., McHardy, I. M., Montuori, C., Morelli, L., Mosquera, A., Mudd, D., Muller-Sanchez, F., Nazarov, S. V., Norris, R. P., Nousek, J. A., Nguyen, M. L., Ochner, P., Okhmat, D. N., Pancoast, A., Papadakis, I., Parks, J. R., Penny, M. T., Pizzella, A., Pogge, R. W., Poleski, R., Pott, J. -U., Rafter, S. E., Rix, H. -W., Runnoe, J., Saylor, D. A., Schimoia, J. S., Schnuelle, K., Scott, B., Sergeev, S. G., Shappee, B. J., Shivvers, I., Siegel, M., Simonian, G. V., Siviero, A., Skielboe, A., Somers, G., Spencer, M., Starkey, D., Stevens, D. J., Sung, H. -I., Tayar, J., Treu, T., Turner, C. S., Uttley, P., Van Saders, J., Vican, L., Villanueva, S., Weiss, Y., Woo, J. -H., Yan, H., Young, S., Yuk, H., Zheng, W., Zhu, W., Zu, Y., Horne, Keith, Rosa, G. De, Peterson, B. M., Barth, A. J., Ely, J., Fausnaugh, M. M., Kriss, G. A., Pei, L., Bentz, M. C., Cackett, E. M., Edelson, R., Eracleous, M., Goad, M. R., Grier, C. J., Kaastra, J., Kochanek, C. S., Krongold, Y., Mathur, S., Netzer, H., Proga, D., Tejos, N., Vestergaard, M., Villforth, C., Adams, S. M., Anderson, M. D., Arevalo, P., Beatty, T. G., Bennert, V. N., Bigley, A., Bisogni, S., Borman, G. A., Boroson, T. A., Bottorff, M. C., Brandt, W. N., Breeveld, A. A., Brotherton, M., Brown, J. E., Brown, J. S., Canalizo, G., Carini, M. T., Clubb, K. I., Comerford, J. M., Corsini, E. M., Crenshaw, D. M., Croft, S., Croxall, K. V., Bonta, E. Dalla, Deason, A. J., Dehghanian, M., Lorenzo-Caceres, A. De, Denney, K. D., Dietrich, M., Done, C., Efimova, N. V., Evans, P. A., Ferland, G. J., Filippenko, A. V., Flatland, K., Fox, O. D., Gardner, E., Gates, E. L., Gehrels, N., Geier, S., Gelbord, J. M., Gonzalez, L., Gorjian, V., Greene, J. E., Grupe, D., Gupta, A., Hall, P. B., Henderson, C. B., Hicks, S., Holmbeck, E., Holoien, T. W. -S., Hutchison, T., Im, M., Jensen, J. J., Johnson, C. A., Joner, M. D., Jones, J., Kaspi, S., Kelly, P. L., Kennea, J. A., Kim, M., Kim, S., Kim, S. C., King, A., Klimanov, S. A., Korista, K. T., Lau, M. W., Lee, J. C., Leonard, D. C., Li, Miao, Lira, P., Lochhaas, C., Ma, Zhiyuan, MacInnis, F., Malkan, M. A., Manne-Nicholas, E. R., Mauerhan, J. C., McGurk, R., McHardy, I. M., Montuori, C., Morelli, L., Mosquera, A., Mudd, D., Muller-Sanchez, F., Nazarov, S. V., Norris, R. P., Nousek, J. A., Nguyen, M. L., Ochner, P., Okhmat, D. N., Pancoast, A., Papadakis, I., Parks, J. R., Penny, M. T., Pizzella, A., Pogge, R. W., Poleski, R., Pott, J. -U., Rafter, S. E., Rix, H. -W., Runnoe, J., Saylor, D. A., Schimoia, J. S., Schnuelle, K., Scott, B., Sergeev, S. G., Shappee, B. J., Shivvers, I., Siegel, M., Simonian, G. V., Siviero, A., Skielboe, A., Somers, G., Spencer, M., Starkey, D., Stevens, D. J., Sung, H. -I., Tayar, J., Treu, T., Turner, C. S., Uttley, P., Van Saders, J., Vican, L., Villanueva, S., Weiss, Y., Woo, J. -H., Yan, H., Young, S., Yuk, H., Zheng, W., Zhu, W., and Zu, Y.

Abstract

In this contribution, we achieve the primary goal of the active galactic nucleus (AGN) STORM campaign by recovering velocity-delay maps for the prominent broad emission lines (Ly alpha, C IV, He II, and H beta) in the spectrum of NGC 5548. These are the most detailed velocity-delay maps ever obtained for an AGN, providing unprecedented information on the geometry, ionization structure, and kinematics of the broad-line region. Virial envelopes enclosing the emission-line responses show that the reverberating gas is bound to the black hole. A stratified ionization structure is evident. The He ii response inside 5-10 lt-day has a broad single-peaked velocity profile. The Ly alpha, C IV, and H beta responses extend from inside 2 to outside 20 lt-day, with double peaks at 2500 km s(-1) in the 10-20 lt-day delay range. An incomplete ellipse in the velocity-delay plane is evident in H beta. We interpret the maps in terms of a Keplerian disk with a well-defined outer rim at R = 20 lt-day. The far-side response is weaker than that from the near side. The line-center delay tau = (R/c)(1 - sin i) approximate to 5 days gives the inclination i approximate to 45 degrees. The inferred black hole mass is (BH) 7 x 10(7) M-circle dot. In addition to reverberations, the fit residuals confirm that emission-line fluxes are depressed during the "BLR Holiday" identified in previous work. Moreover, a helical "Barber-Pole" pattern, with stripes moving from red to blue across the C IV and Ly alpha line profiles, suggests azimuthal structure rotating with a 2 yr period that may represent precession or orbital motion of inner-disk structures casting shadows on the emission-line region farther out.

Published
2021

27. A tidally tilted sectoral dipole pulsation mode in the eclipsing binary TIC 63328020

Author

Rappaport, S A, primary, Kurtz, D W, additional, Handler, G, additional, Jones, D, additional, Nelson, L A, additional, Saio, H, additional, Fuller, J, additional, Holdsworth, D L, additional, Vanderburg, A, additional, Žák, J, additional, Skarka, M, additional, Aiken, J, additional, Maxted, P F L, additional, Stevens, D J, additional, Feliz, D L, additional, and Aliçavuş, F Kahraman, additional

Published
2021
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28. Space Telescope and Optical Reverberation Mapping Project. IX. Velocity–Delay Maps for Broad Emission Lines in NGC 5548

Author

Horne, Keith, primary, Rosa, G. De, additional, Peterson, B. M., additional, Barth, A. J., additional, Ely, J., additional, Fausnaugh, M. M., additional, Kriss, G. A., additional, Pei, L., additional, Bentz, M. C., additional, Cackett, E. M., additional, Edelson, R., additional, Eracleous, M., additional, Goad, M. R., additional, Grier, C. J., additional, Kaastra, J., additional, Kochanek, C. S., additional, Krongold, Y., additional, Mathur, S., additional, Netzer, H., additional, Proga, D., additional, Tejos, N., additional, Vestergaard, M., additional, Villforth, C., additional, Adams, S. M., additional, Anderson, M. D., additional, Arévalo, P., additional, Beatty, T G., additional, Bennert, V. N., additional, Bigley, A., additional, Bisogni, S., additional, Borman, G. A., additional, Boroson, T. A., additional, Bottorff, M. C., additional, Brandt, W. N., additional, Breeveld, A. A., additional, Brotherton, M., additional, Brown, J. E., additional, Brown, J. S., additional, Canalizo, G., additional, Carini, M. T., additional, Clubb, K. I., additional, Comerford, J. M., additional, Corsini, E. M., additional, Crenshaw, D. M., additional, Croft, S., additional, Croxall, K. V., additional, Bontà, E. Dalla, additional, Deason, A. J., additional, Dehghanian, M., additional, Lorenzo-Cáceres, A. De, additional, Denney, K. D., additional, Dietrich, M., additional, Done, C., additional, Efimova, N. V., additional, Evans, P. A., additional, Ferland, G. J., additional, Filippenko, A. V., additional, Flatland, K., additional, Fox, O. D., additional, Gardner, E., additional, Gates, E. L., additional, Gehrels, N., additional, Geier, S., additional, Gelbord, J. M., additional, Gonzalez, L., additional, Gorjian, V., additional, Greene, J. E., additional, Grupe, D., additional, Gupta, A., additional, Hall, P. B., additional, Henderson, C. B., additional, Hicks, S., additional, Holmbeck, E., additional, Holoien, T. W.-S., additional, Hutchison, T., additional, Im, M., additional, Jensen, J. J., additional, Johnson, C. A., additional, Joner, M. D., additional, Jones, J., additional, Kaspi, S., additional, Kelly, P. L., additional, Kennea, J. A., additional, Kim, M., additional, Kim, S., additional, Kim, S. C., additional, King, A., additional, Klimanov, S. A., additional, Korista, K. T., additional, Lau, M. W., additional, Lee, J. C., additional, Leonard, D. C., additional, Li, Miao, additional, Lira, P., additional, Lochhaas, C., additional, Ma, Zhiyuan, additional, MacInnis, F., additional, Malkan, M. A., additional, Manne-Nicholas, E. R., additional, Mauerhan, J. C., additional, McGurk, R., additional, McHardy, I. M., additional, Montuori, C., additional, Morelli, L., additional, Mosquera, A., additional, Mudd, D., additional, Müller–Sánchez, F., additional, Nazarov, S. V., additional, Norris, R. P., additional, Nousek, J. A., additional, Nguyen, M. L., additional, Ochner, P., additional, Okhmat, D. N., additional, Pancoast, A., additional, Papadakis, I., additional, Parks, J. R., additional, Penny, M. T., additional, Pizzella, A., additional, Pogge, R. W., additional, Poleski, R., additional, Pott, J.-U., additional, Rafter, S. E., additional, Rix, H.-W., additional, Runnoe, J., additional, Saylor, D. A., additional, Schimoia, J. S., additional, Schnülle, K., additional, Scott, B., additional, Sergeev, S. G., additional, Shappee, B. J., additional, Shivvers, I., additional, Siegel, M., additional, Simonian, G. V., additional, Siviero, A., additional, Skielboe, A., additional, Somers, G., additional, Spencer, M., additional, Starkey, D., additional, Stevens, D. J., additional, Sung, H.-I., additional, Tayar, J., additional, Treu, T., additional, Turner, C. S., additional, Uttley, P., additional, Van Saders, J., additional, Vican, L., additional, Villanueva, S., additional, Weiss, Y., additional, Woo, J.-H., additional, Yan, H., additional, Young, S., additional, Yuk, H., additional, Zheng, W., additional, Zhu, W., additional, and Zu, Y., additional

Published
2021
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30. Space Telescope and Optical Reverberation Mapping Project. XII. Broad-line Region Modeling of NGC 5548

Author

Williams, P. R., primary, Pancoast, A., additional, Treu, T., additional, Brewer, B. J., additional, Peterson, B. M., additional, Barth, A. J., additional, Malkan, M. A., additional, Rosa, G. De, additional, Horne, Keith, additional, Kriss, G. A., additional, Arav, N., additional, Bentz, M. C., additional, Cackett, E. M., additional, Bontà, E. Dalla, additional, Dehghanian, M., additional, Done, C., additional, Ferland, G. J., additional, Grier, C. J., additional, Kaastra, J., additional, Kara, E., additional, Kochanek, C. S., additional, Mathur, S., additional, Mehdipour, M., additional, Pogge, R. W., additional, Proga, D., additional, Vestergaard, M., additional, Waters, T., additional, Adams, S. M., additional, Anderson, M. D., additional, Arévalo, P., additional, Beatty, T. G., additional, Bennert, V. N., additional, Bigley, A., additional, Bisogni, S., additional, Borman, G. A., additional, Boroson, T. A., additional, Bottorff, M. C., additional, Brandt, W. N., additional, Breeveld, A. A., additional, Brotherton, M., additional, Brown, J. E., additional, Brown, J. S., additional, Canalizo, G., additional, Carini, M. T., additional, Clubb, K. I., additional, Comerford, J. M., additional, Corsini, E. M., additional, Crenshaw, D. M., additional, Croft, S., additional, Croxall, K. V., additional, Deason, A. J., additional, Lorenzo-Cáceres, A. De, additional, Denney, K. D., additional, Dietrich, M., additional, Edelson, R., additional, Efimova, N. V., additional, Ely, J., additional, Evans, P. A., additional, Fausnaugh, M. M., additional, Filippenko, A. V., additional, Flatland, K., additional, Fox, O. D., additional, Gardner, E., additional, Gates, E. L., additional, Gehrels, N., additional, Geier, S., additional, Gelbord, J. M., additional, Gonzalez, L., additional, Gorjian, V., additional, Greene, J. E., additional, Grupe, D., additional, Gupta, A., additional, Hall, P. B., additional, Henderson, C. B., additional, Hicks, S., additional, Holmbeck, E., additional, Holoien, T. W.-S., additional, Hutchison, T., additional, Im, M., additional, Jensen, J. J., additional, Johnson, C. A., additional, Joner, M. D., additional, Jones, J., additional, Kaspi, S., additional, Kelly, P. L., additional, Kennea, J. A., additional, Kim, M., additional, Kim, S., additional, Kim, S. C., additional, King, A., additional, Klimanov, S. A., additional, Knigge, C., additional, Krongold, Y., additional, Lau, M. W., additional, Lee, J. C., additional, Leonard, D. C., additional, Li, Miao, additional, Lira, P., additional, Lochhaas, C., additional, Ma, Zhiyuan, additional, MacInnis, F., additional, Manne-Nicholas, E. R., additional, Mauerhan, J. C., additional, McGurk, R., additional, McHardy, I. M., additional, Montuori, C., additional, Morelli, L., additional, Mosquera, A., additional, Mudd, D., additional, Müller–Sánchez, F., additional, Nazarov, S. V., additional, Norris, R. P., additional, Nousek, J. A., additional, Nguyen, M. L., additional, Ochner, P., additional, Okhmat, D. N., additional, Papadakis, I., additional, Parks, J. R., additional, Pei, L., additional, Penny, M. T., additional, Pizzella, A., additional, Poleski, R., additional, Pott, J.-U., additional, Rafter, S. E., additional, Rix, H.-W., additional, Runnoe, J., additional, Saylor, D. A., additional, Schimoia, J. S., additional, Scott, B., additional, Sergeev, S. G., additional, Shappee, B. J., additional, Shivvers, I., additional, Siegel, M., additional, Simonian, G. V., additional, Siviero, A., additional, Skielboe, A., additional, Somers, G., additional, Spencer, M., additional, Starkey, D., additional, Stevens, D. J., additional, Sung, H.-I., additional, Tayar, J., additional, Tejos, N., additional, Turner, C. S., additional, Uttley, P., additional, Van Saders, J ., additional, Vaughan, S. A., additional, Vican, L., additional, Villanueva, S., additional, Villforth, C., additional, Weiss, Y., additional, Woo, J.-H., additional, Yan, H., additional, Young, S., additional, Yuk, H., additional, Zheng, W., additional, Zhu, W., additional, and Zu, Y., additional

Published
2020
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31. CzeV1731: The unique doubly eclipsing quadruple system

Author

Zasche, P., primary, Henzl, Z., additional, Lehmann, H., additional, Pepper, J., additional, Powell, B. P., additional, Kostov, V. B., additional, Barclay, T., additional, Wolf, M., additional, Kučáková, H., additional, Uhlař, R., additional, Mašek, M., additional, Palafouta, S., additional, Gazeas, K., additional, Stassun, K. G., additional, Gaudi, B. S., additional, Rodriguez, J. E., additional, and Stevens, D. J., additional

Published
2020
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33. TANAMI: Tracking Active Galactic Nuclei with Austral Milliarcsecond Interferometry

Author

C. Müller, M. Kadler, R. Ojha, R. Schulz, J. Trüstedt, P. G. Edwards, E. Ros, B. Carpenter, R. Angioni, J. Blanchard, M. Böck, P. R. Burd, M. Dörr, M. S. Dutka, T. Eberl, S. Gulyaev, H. Hase, S. Horiuchi, U. Katz, F. Krauß, J. E. J. Lovell, T. Natusch, R. Nesci, C. Phillips, C. Plötz, T. Pursimo, J. F. H. Quick, J. Stevens, D. J. Thompson, S. J. Tingay, A. K. Tzioumis, S. Weston, J. Wilms, J

Published
2018
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34. Space Telescope and Optical Reverberation Mapping Project. VIII. Time Variability of Emission and Absorption in NGC 5548 Based on Modeling the Ultraviolet Spectrum

Author

Kriss, G. A., primary, De Rosa, G., additional, Ely, J., additional, Peterson, B. M., additional, Kaastra, J., additional, Mehdipour, M., additional, Ferland, G. J., additional, Dehghanian, M., additional, Mathur, S., additional, Edelson, R., additional, Korista, K. T., additional, Arav, N., additional, Barth, A. J., additional, Bentz, M. C., additional, Brandt, W. N., additional, Crenshaw, D. M., additional, Bontà, E. Dalla, additional, Denney, K. D., additional, Done, C., additional, Eracleous, M., additional, Fausnaugh, M. M., additional, Gardner, E., additional, Goad, M. R., additional, Grier, C. J., additional, Horne, Keith, additional, Kochanek, C. S., additional, McHardy, I. M., additional, Netzer, H., additional, Pancoast, A., additional, Pei, L., additional, Pogge, R. W., additional, Proga, D., additional, Silva, C., additional, Tejos, N., additional, Vestergaard, M., additional, Adams, S. M., additional, Anderson, M. D., additional, Arévalo, P., additional, Beatty, T G., additional, Behar, E., additional, Bennert, V. N., additional, Bianchi, S., additional, Bigley, A., additional, Bisogni, S., additional, Boissay-Malaquin, R., additional, Borman, G. A., additional, Bottorff, M. C., additional, Breeveld, A. A., additional, Brotherton, M., additional, Brown, J. E., additional, Brown, J. S., additional, Cackett, E. M., additional, Canalizo, G., additional, Cappi, M., additional, Carini, M. T., additional, Clubb, K. I., additional, Comerford, J. M., additional, Coker, C. T., additional, Corsini, E. M., additional, Costantini, E., additional, Croft, S., additional, Croxall, K. V., additional, Deason, A. J., additional, De Lorenzo-Cáceres, A., additional, De Marco, B., additional, Dietrich, M., additional, Di Gesu, L., additional, Ebrero, J., additional, Evans, P. A., additional, Filippenko, A. V., additional, Flatland, K., additional, Gates, E. L., additional, Gehrels, N., additional, Geier, S., additional, Gelbord, J. M., additional, Gonzalez, L., additional, Gorjian, V., additional, Grupe, D., additional, Gupta, A., additional, Hall, P. B., additional, Henderson, C. B., additional, Hicks, S., additional, Holmbeck, E., additional, Holoien, T. W.-S., additional, Hutchison, T. A., additional, Im, M., additional, Jensen, J. J., additional, Johnson, C. A., additional, Joner, M. D., additional, Kaspi, S., additional, Kelly, B. C., additional, Kelly, P. L., additional, Kennea, J. A., additional, Kim, M., additional, Kim, S. C., additional, Kim, S. Y., additional, King, A., additional, Klimanov, S. A., additional, Krongold, Y., additional, Lau, M. W., additional, Lee, J. C., additional, Leonard, D. C., additional, Li, Miao, additional, Lira, P., additional, Lochhaas, C., additional, Ma, Zhiyuan, additional, MacInnis, F., additional, Malkan, M. A., additional, Manne-Nicholas, E. R., additional, Matt, G., additional, Mauerhan, J. C., additional, McGurk, R., additional, Montuori, C., additional, Morelli, L., additional, Mosquera, A., additional, Mudd, D., additional, Müller-Sánchez, F., additional, Nazarov, S. V., additional, Norris, R. P., additional, Nousek, J. A., additional, Nguyen, M. L., additional, Ochner, P., additional, Okhmat, D. N., additional, Paltani, S., additional, Parks, J. R., additional, Pinto, C., additional, Pizzella, A., additional, Poleski, R., additional, Ponti, G., additional, Pott, J.-U., additional, Rafter, S. E., additional, Rix, H.-W., additional, Runnoe, J., additional, Saylor, D. A., additional, Schimoia, J. S., additional, Schnülle, K., additional, Scott, B., additional, Sergeev, S. G., additional, Shappee, B. J., additional, Shivvers, I., additional, Siegel, M., additional, Simonian, G. V., additional, Siviero, A., additional, Skielboe, A., additional, Somers, G., additional, Spencer, M., additional, Starkey, D., additional, Stevens, D. J., additional, Sung, H.-I., additional, Tayar, J., additional, Teems, K. G., additional, Treu, T., additional, Turner, C. S., additional, Uttley, P., additional, Van Saders, J ., additional, Vican, L., additional, Villforth, C., additional, Villanueva Jr., S., additional, Walton, D. J., additional, Waters, T., additional, Weiss, Y., additional, Woo, J.-H., additional, Yan, H., additional, Yuk, H., additional, Zheng, W., additional, Zhu, W., additional, and Zu, Y., additional

Published
2019
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38. Velocity-resolved Reverberation Mapping of Five Bright Seyfert 1 Galaxies

Author

De Rosa, G., primary, Fausnaugh, M. M., additional, Grier, C. J., additional, Peterson, B. M., additional, Denney, K. D., additional, Horne, Keith, additional, Bentz, M. C., additional, Ciroi, S., additional, Bontà, E. Dalla, additional, Joner, M. D., additional, Kaspi, S., additional, Kochanek, C. S., additional, Pogge, R. W., additional, Sergeev, S. G., additional, Vestergaard, M., additional, Adams, S. M., additional, Antognini, J., additional, Salvo, C. Araya, additional, Armstrong, E., additional, Bae, J., additional, Barth, A. J., additional, Beatty, T. G., additional, Bhattacharjee, A., additional, Borman, G. A., additional, Boroson, T. A., additional, Bottorff, M. C., additional, Brown, J. E., additional, Brown, J. S., additional, Brotherton, M. S., additional, Coker, C. T., additional, Clanton, C., additional, Cracco, V., additional, Crawford, S. M., additional, Croxall, K. V., additional, Eftekharzadeh, S., additional, Eracleous, M., additional, Fiorenza, S. L., additional, Frassati, A., additional, Hawkins, K., additional, Henderson, C. B., additional, Holoien, T. W.-S., additional, Hutchison, T., additional, Kellar, J., additional, Kilerci-Eser, E., additional, Kim, S., additional, King, A. L., additional, Mura, G. La, additional, Laney, C. D., additional, Li, M., additional, Lochhaas, C., additional, Ma, Z., additional, MacInnis, F., additional, Manne-Nicholas, E. R., additional, Mason, M., additional, McGraw, S. M., additional, Mogren, K., additional, Montouri, C., additional, Moody, J. W., additional, Mosquera, A. M., additional, Mudd, D., additional, Musso, R., additional, Nazarov, S. V., additional, Nguyen, M. L., additional, Ochner, P., additional, Okhmat, D. N., additional, Onken, C. A., additional, Ou-Yang, B., additional, Pancoast, A., additional, Pei, L., additional, Penny, M., additional, Poleski, R., additional, Portaluri, E., additional, Prieto, J.-L., additional, Price-Whelan, A. M., additional, Pulatova, N. G., additional, Rafter, S., additional, Roettenbacher, R. M., additional, Romero-Colmenero, E., additional, Runnoe, J., additional, Schimoia, J. S., additional, Shappee, B. J., additional, Sherf, N., additional, Simonian, G. V., additional, Siviero, A., additional, Skowron, D. M., additional, Skowron, J., additional, Somers, G., additional, Spencer, M., additional, Starkey, D. A., additional, Stevens, D. J., additional, Stoll, R., additional, Tamajo, E., additional, Tayar, J., additional, Saders, J. L. van, additional, Valenti, S., additional, Villanueva, Jr., S., additional, Villforth, C., additional, Weiss, Y., additional, Winkler, H., additional, Zastrow, J., additional, Zhu, W., additional, and Zu, Y., additional

Published
2018
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41. Abstracts of the 33rd International Austrian Winter Symposium

Author

Binzel, K., primary, Adelaja, A., additional, Wright, C. L., additional, Scharre, D., additional, Zhang, J., additional, Knopp, M. V., additional, Teoh, E. J., additional, Bottomley, D., additional, Scarsbrook, A., additional, Payne, H., additional, Afaq, A., additional, Bomanji, J., additional, van As, N., additional, Chua, S., additional, Hoskin, P., additional, Chambers, A., additional, Cook, G. J., additional, Warbey, V. S., additional, Chau, A., additional, Ward, P., additional, Miller, M. P., additional, Stevens, D. J., additional, Wilson, L., additional, Gleeson, F. V., additional, Scheidhauer, K., additional, Seidl, C., additional, Autenrieth, M., additional, Bruchertseifer, F., additional, Apostolidis, C., additional, Kurtz, F., additional, Horn, T., additional, Pfob, C., additional, Schwaiger, M., additional, Gschwend, J., additional, D’Alessandria, C., additional, Morgenstern, A., additional, Uprimny, C., additional, Kroiss, A., additional, Decristoforo, C., additional, von Guggenberg, E., additional, Nilica, B., additional, Horninger, W., additional, Virgolini, I., additional, Rasul, S., additional, Poetsch, N., additional, Woehrer, A., additional, Preusser, M., additional, Mitterhauser, M., additional, Wadsak, W., additional, Widhalm, G., additional, Mischkulnig, M., additional, Hacker, M., additional, Traub-Weidinger, T., additional, Binzel, K., additional, Wuthrick, E. J., additional, Miller, E. D., additional, Maniawski, P., additional, Rep, Sebastijan, additional, Hocevar, Marko, additional, Vaupotic, Janja, additional, Zdesar, Urban, additional, Zaletel, Katja, additional, Lezaic, Luka, additional, Mairinger, S., additional, Filip, Thomas, additional, Sauberer, M., additional, Flunkert, S., additional, Wanek, T., additional, Stanek, J., additional, Okamura, N., additional, Langer, O., additional, Kuntner, C., additional, Fornito, M. C., additional, Balzano, R., additional, Di Martino, V., additional, Cacciaguerra, S., additional, Russo, G., additional, Seifert, D., additional, Kleinova, M., additional, Cepa, A., additional, Ralis, J., additional, Hanc, P., additional, Lebeda, O., additional, Mosa, M., additional, Vandenberghe, S., additional, Mikhaylova, E., additional, Borys, D., additional, Viswanath, V., additional, Stockhoff, M., additional, Efthimiou, N., additional, Caribe, P., additional, Van Holen, R., additional, Karp, J. S., additional, Haller, P. M., additional, Farhan, C., additional, Piackova, E., additional, Jäger, B., additional, Knoll, P., additional, Kiss, A., additional, Podesser, B. K., additional, Wojta, J., additional, Huber, K., additional, Mirzaei, S., additional, Traxl, A., additional, Komposch, K., additional, Glitzner, Elisabeth, additional, Sibilia, M., additional, Russello, M., additional, Sorko, S., additional, Gallowitsch, H. J., additional, Kohlfuerst, S., additional, Matschnig, S., additional, Rieser, M., additional, Sorschag, M., additional, Lind, P., additional, Ležaič, L., additional, Rep, S., additional, Žibert, J., additional, Frelih, N., additional, Šuštar, S., additional, Baum, R. P., additional, Langbein, T., additional, Singh, A., additional, Shahinfar, M., additional, Schuchardt, C., additional, Volk, G. F., additional, Kulkarni, H. R., additional, Di Martino, G. V., additional, Thomson, W. H., additional, Kudlacek, M., additional, Karik, M., additional, Rieger, H., additional, Pokieser, W., additional, Glaser, K., additional, Petz, V., additional, Tugendsam, C., additional, Buchinger, W., additional, Schmoll-Hauer, B., additional, Schenk, I. P., additional, Rudolph, K., additional, Krebs, M., additional, Zettinig, G., additional, Zoufal, V., additional, Krohn, M., additional, Filip, T., additional, Pahnke, J., additional, Weitzer, F., additional, Pernthaler, B., additional, Salamon, S., additional, Aigner, R., additional, Koranda, P., additional, Henzlová, L., additional, Kamínek, M., additional, Váchalová, Mo., additional, Bachleda, P., additional, Summer, D., additional, Garousi, J., additional, Oroujeni, M., additional, Mitran, B., additional, Andersson, K. G., additional, Vorobyeva, A., additional, Löfblom, J.n, additional, Orlova, A., additional, Tolmachev, V., additional, Kaeopookum, P., additional, Orasch, T., additional, Lechner, B., additional, Petrik, M., additional, Novy, Z., additional, Rangger, C., additional, and Haas, H., additional

Published
2018
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43. Space Telescope and Optical Reverberation Mapping Project. VII. Understanding the Ultraviolet Anomaly in NGC 5548 with X-Ray Spectroscopy

Author

Mathur, S., primary, Gupta, A., additional, Page, K., additional, Pogge, R. W., additional, Krongold, Y., additional, Goad, M. R., additional, Adams, S. M., additional, Anderson, M. D., additional, Arévalo, P., additional, Barth, A. J., additional, Bazhaw, C., additional, Beatty, T. G., additional, Bentz, M. C., additional, Bigley, A., additional, Bisogni, S., additional, Borman, G. A., additional, Boroson, T. A., additional, Bottorff, M. C., additional, Brandt, W. N., additional, Breeveld, A. A., additional, Brown, J. E., additional, Brown, J. S., additional, Cackett, E. M., additional, Canalizo, G., additional, Carini, M. T., additional, Clubb, K. I., additional, Comerford, J. M., additional, Coker, C. T., additional, Corsini, E. M., additional, Crenshaw, D. M., additional, Croft, S., additional, Croxall, K. V., additional, Dalla Bontà, E., additional, Deason, A. J., additional, Denney, K. D., additional, De Lorenzo-Cáceres, A., additional, De Rosa, G., additional, Dietrich, M., additional, Edelson, R., additional, Ely, J., additional, Eracleous, M., additional, Evans, P. A., additional, Fausnaugh, M. M., additional, Ferland, G. J., additional, Filippenko, A. V., additional, Flatland, K., additional, Fox, O. D., additional, Gates, E. L., additional, Gehrels, N., additional, Geier, S., additional, Gelbord, J. M., additional, Gorjian, V., additional, Greene, J. E., additional, Grier, C. J., additional, Grupe, D., additional, Hall, P. B., additional, Henderson, C. B., additional, Hicks, S., additional, Holmbeck, E., additional, Holoien, T. W.-S., additional, Horenstein, D., additional, Horne, Keith, additional, Hutchison, T., additional, Im, M., additional, Jensen, J. J., additional, Johnson, C. A., additional, Joner, M. D., additional, Jones, J., additional, Kaastra, J., additional, Kaspi, S., additional, Kelly, B. C., additional, Kelly, P. L., additional, Kennea, J. A., additional, Kim, M., additional, Kim, S., additional, Kim, S. C., additional, King, A., additional, Klimanov, S. A., additional, Kochanek, C. S., additional, Korista, K. T., additional, Kriss, G. A., additional, Lau, M. W., additional, Lee, J. C., additional, Leonard, D. C., additional, Li, M., additional, Lira, P., additional, Ma, Z., additional, MacInnis, F., additional, Manne-Nicholas, E. R., additional, Malkan, M. A., additional, Mauerhan, J. C., additional, McGurk, R., additional, McHardy, I. M., additional, Montouri, C., additional, Morelli, L., additional, Mosquera, A., additional, Mudd, D., additional, Muller-Sanchez, F., additional, Musso, R., additional, Nazarov, S. V., additional, Netzer, H., additional, Nguyen, M. L., additional, Norris, R. P., additional, Nousek, J. A., additional, Ochner, P., additional, Okhmat, D. N., additional, Ou-Yang, B., additional, Pancoast, A., additional, Papadakis, I., additional, Parks, J. R., additional, Pei, L., additional, Peterson, B. M., additional, Pizzella, A., additional, Poleski, R., additional, Pott, J.-U., additional, Rafter, S. E., additional, Rix, H.-W., additional, Runnoe, J., additional, Saylor, D. A., additional, Schimoia, J. S., additional, Schnülle, K., additional, Sergeev, S. G., additional, Shappee, B. J., additional, Shivvers, I., additional, Siegel, M., additional, Simonian, G. V., additional, Siviero, A., additional, Skielboe, A., additional, Somers, G., additional, Spencer, M., additional, Starkey, D., additional, Stevens, D. J., additional, Sung, H.-I., additional, Tayar, J., additional, Tejos, N., additional, Turner, C. S., additional, Uttley, P., additional, Van Saders, J., additional, Vestergaard, M., additional, Vican, L., additional, Villanueva Jr., S., additional, Villforth, C., additional, Weiss, Y., additional, Woo, J.-H., additional, Yan, H., additional, Young, S., additional, Yuk, H., additional, Zheng, W., additional, Zhu, W., additional, and Zu, Y., additional

Published
2017
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44. WASP-167b/KELT-13b: joint discovery of a hot Jupiter transiting a rapidly rotating F1V star

Author

Temple, L. Y., primary, Hellier, C., additional, Albrow, M. D., additional, Anderson, D. R., additional, Bayliss, D., additional, Beatty, T. G., additional, Bieryla, A., additional, Brown, D. J. A., additional, Cargile, P. A., additional, Collier Cameron, A., additional, Collins, K. A., additional, Colón, K. D., additional, Curtis, I. A., additional, D'Ago, G., additional, Delrez, L., additional, Eastman, J., additional, Gaudi, B. S., additional, Gillon, M., additional, Gregorio, J., additional, James, D., additional, Jehin, E., additional, Joner, M. D., additional, Kielkopf, J. F., additional, Kuhn, R. B., additional, Labadie-Bartz, J., additional, Latham, D. W., additional, Lendl, M., additional, Lund, M. B., additional, Malpas, A. L., additional, Maxted, P. F. L., additional, Myers, G., additional, Oberst, T. E., additional, Pepe, F., additional, Pepper, J., additional, Pollacco, D., additional, Queloz, D., additional, Rodriguez, J. E., additional, Ségransan, D., additional, Siverd, R. J., additional, Smalley, B., additional, Stassun, K. G., additional, Stevens, D. J., additional, Stockdale, C., additional, Tan, T. G., additional, Triaud, A. H. M. J., additional, Udry, S., additional, Villanueva, S., additional, West, R. G., additional, and Zhou, G., additional

Published
2017
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45. Periodic eclipses of the young star PDS 110 discovered with WASP and KELT photometry

Author

Osborn, H. P., primary, Rodriguez, J. E., additional, Kenworthy, M. A., additional, Kennedy, G. M., additional, Mamajek, E. E., additional, Robinson, C. E., additional, Espaillat, C. C., additional, Armstrong, D. J., additional, Shappee, B. J., additional, Bieryla, A., additional, Latham, D. W., additional, Anderson, D. R., additional, Beatty, T. G., additional, Berlind, P., additional, Calkins, M. L., additional, Esquerdo, G. A., additional, Gaudi, B. S., additional, Hellier, C., additional, Holoien, T. W.-S., additional, James, D., additional, Kochanek, C. S., additional, Kuhn, R. B., additional, Lund, M. B., additional, Pepper, J., additional, Pollacco, D. L., additional, Prieto, J. L., additional, Siverd, R. J., additional, Stassun, K. G., additional, Stevens, D. J., additional, Stanek, K. Z., additional, and West, R. G., additional

Published
2017
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