Search

Your search keyword '"De Bernardis F"' showing total 310 results
Start Over Author "De Bernardis F"
310 results on '"De Bernardis F"'

1. Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope

Author

De Bernardis, F., Aiola, S., Vavagiakis, E. M., Battaglia, N., Niemack, M. D., Beall, J., Becker, D. T., Bond, J. R., Calabrese, E., Cho, H., Coughlin, K., Datta, R., Devlin, M., Dunkley, J., Dunner, R., Ferraro, S., Fox, A., Gallardo, P. A., Halpern, M., Hand, N., Hasselfield, M., Henderson, S. W., Hill, J. C., Hilton, G. C., Hilton, M., Hincks, A. D., Hlozek, R., Hubmayr, J., Huffenberger, K., Hughes, J. P., Irwin, K. D., Koopman, B. J., Kosowsky, A., Li, D., Louis, T., Lungu, M., Madhavacheril, M. S., Maurin, L., McMahon, J., Moodley, K., Naess, S., Nati, F., Newburgh, L., Nibarger, J. P., Page, L. A., Partridge, B., Schaan, E., Schmitt, B. L., Sehgal, N., Sievers, J., Simon, S. M., Spergel, D. N., Staggs, S. T., Stevens, J. R., Thornton, R. J., van Engelen, A., Van Lanen, J., and Wollack, E. J.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present a new measurement of the kinematic Sunyaev-Zeldovich effect using data from the Atacama Cosmology Telescope (ACT) and the Baryon Oscillation Spectroscopic Survey (BOSS). Using 600 square degrees of overlapping sky area, we evaluate the mean pairwise baryon momentum associated with the positions of 50,000 bright galaxies in the BOSS DR11 Large Scale Structure catalog. A non-zero signal arises from the large-scale motions of halos containing the sample galaxies. The data fits an analytical signal model well, with the optical depth to microwave photon scattering as a free parameter determining the overall signal amplitude. We estimate the covariance matrix of the mean pairwise momentum as a function of galaxy separation, using microwave sky simulations, jackknife evaluation, and bootstrap estimates. The most conservative simulation-based errors give signal-to-noise estimates between 3.6 and 4.1 for varying galaxy luminosity cuts. We discuss how the other error determinations can lead to higher signal-to-noise values, and consider the impact of several possible systematic errors. Estimates of the optical depth from the average thermal Sunyaev-Zeldovich signal at the sample galaxy positions are broadly consistent with those obtained from the mean pairwise momentum signal., Comment: 15 pages, 8 figures, 2 tables

Published
2016
Full Text
View/download PDF

2. Survey strategy optimization for the Atacama Cosmology Telescope

Author

De Bernardis, F., Stevens, J. R., Hasselfield, M., Alonso, D., Bond, J. R., Calabrese, E., Choi, S. K., Crowley, K. T., Devlin, M., Dunkley, J., Gallardo, P. A., Henderson, S. W., Hilton, M., Hlozek, R., Ho, S. P., Huffenberger, K., Koopman, B. J., Kosowsky, A., Louis, T., Madhavacheril, M. S., McMahon, J., Naess, S., Nati, F., Newburgh, L., Niemack, M. D., Page, L. A., Salatino, M., Schillaci, A., Schmitt, B. L., Sehgal, N., Sievers, J. L., Simon, S. M., Spergel, D. N., Staggs, S. T., van Engelen, A., Vavagiakis, E. M., and Wollack, E. J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

In recent years there have been significant improvements in the sensitivity and the angular resolution of the instruments dedicated to the observation of the Cosmic Microwave Background (CMB). ACTPol is the first polarization receiver for the Atacama Cosmology Telescope (ACT) and is observing the CMB sky with arcmin resolution over about 2000 sq. deg. Its upgrade, Advanced ACTPol (AdvACT), will observe the CMB in five frequency bands and over a larger area of the sky. We describe the optimization and implementation of the ACTPol and AdvACT surveys. The selection of the observed fields is driven mainly by the science goals, that is, small angular scale CMB measurements, B-mode measurements and cross-correlation studies. For the ACTPol survey we have observed patches of the southern galactic sky with low galactic foreground emissions which were also chosen to maximize the overlap with several galaxy surveys to allow unique cross-correlation studies. A wider field in the northern galactic cap ensured significant additional overlap with the BOSS spectroscopic survey. The exact shapes and footprints of the fields were optimized to achieve uniform coverage and to obtain cross-linked maps by observing the fields with different scan directions. We have maximized the efficiency of the survey by implementing a close to 24 hour observing strategy, switching between daytime and nighttime observing plans and minimizing the telescope idle time. We describe the challenges represented by the survey optimization for the significantly wider area observed by AdvACT, which will observe roughly half of the low-foreground sky. The survey strategies described here may prove useful for planning future ground-based CMB surveys, such as the Simons Observatory and CMB Stage IV surveys., Comment: 14 Pages, 9 Figures, 4 Tables

Published
2016
Full Text
View/download PDF

3. The Atacama Cosmology Telescope: Two-season ACTPol spectra and parameters

Author

Louis, T, Grace, E, Hasselfield, M, Lungu, M, Maurin, L, Addison, GE, Ade, PAR, Aiola, S, Allison, R, Amiri, M, Angile, E, Battaglia, N, Beall, JA, De Bernardis, F, Bond, JR, Britton, J, Calabrese, E, Cho, HM, Choi, SK, Coughlin, K, Crichton, D, Crowley, K, Datta, R, Devlin, MJ, Dicker, SR, Dunkley, J, Dünner, R, Ferraro, S, Fox, AE, Gallardo, P, Gralla, M, Halpern, M, Henderson, S, Hill, JC, Hilton, GC, Hilton, M, Hincks, AD, Hlozek, R, Patty Ho, SP, Huang, Z, Hubmayr, J, Huffenberger, KM, Hughes, JP, Infante, L, Irwin, K, Kasanda, SM, Klein, J, Koopman, B, Kosowsky, A, Li, D, Madhavacheril, M, Marriage, TA, McMahon, J, Menanteau, F, Moodley, K, Munson, C, Naess, S, Nati, F, Newburgh, L, Nibarger, J, Niemack, MD, Nolta, MR, Nuñez, C, Page, LA, Pappas, C, Partridge, B, Rojas, F, Schaan, E, Schmitt, BL, Sehgal, N, Sherwin, BD, Sievers, J, Simon, S, Spergel, DN, Staggs, ST, Switzer, ER, Thornton, R, Trac, H, Treu, J, Tucker, C, Engelen, AV, Ward, JT, and Wollack, EJ

Subjects
CMBR experiments, CMBR polarisation, cosmological parameters from CMBR, astro-ph.CO, Nuclear & Particles Physics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Atomic, Molecular, Nuclear, Particle and Plasma Physics
Abstract

We present the temperature and polarization angular power spectra measured by the Atacama Cosmology Telescope Polarimeter (ACTPol). We analyze night-time data collected during 2013-14 using two detector arrays at 149 GHz, from 548 deg2 of sky on the celestial equator. We use these spectra, and the spectra measured with the MBAC camera on ACT from 2008-10, in combination with planck and wmap data to estimate cosmological parameters from the temperature, polarization, and temperature-polarization cross-correlations. We find the new ACTPol data to be consistent with the ΛCDM model. The ACTPol temperature-polarization cross-spectrum now provides stronger constraints on multiple parameters than the ACTPol temperature spectrum, including the baryon density, the acoustic peak angular scale, and the derived Hubble constant. The new ACTPol data provide information on damping tail parameters. The joint uncertainty on the number of neutrino species and the primordial helium fraction is reduced by 20% when adding ACTPol to Planck temperature data alone.

Published
2017

4. Detection of the pairwise kinematic Sunyaev-Zel'dovich effect with BOSS DR11 and the Atacama Cosmology Telescope

Author

De Bernardis, F, Aiola, S, Vavagiakis, EM, Battaglia, N, Niemack, MD, Beall, J, Becker, DT, Bond, JR, Calabrese, E, Cho, H, Coughlin, K, Datta, R, Devlin, M, Dunkley, J, Dunner, R, Ferraro, S, Fox, A, Gallardo, PA, Halpern, M, Hand, N, Hasselfield, M, Henderson, SW, Hill, JC, Hilton, GC, Hilton, M, Hincks, AD, Hlozek, R, Hubmayr, J, Huffenberger, K, Hughes, JP, Irwin, KD, Koopman, BJ, Kosowsky, A, Li, D, Louis, T, Lungu, M, Madhavacheril, MS, Maurin, L, McMahon, J, Moodley, K, Naess, S, Nati, F, Newburgh, L, Nibarger, JP, Page, LA, Partridge, B, Schaan, E, Schmitt, BL, Sehgal, N, Sievers, J, Simon, SM, Spergel, DN, Staggs, ST, Stevens, JR, Thornton, RJ, van Engelen, A, Van Lanen, J, and Wollack, EJ

Subjects
CMBR experiments, galaxy surveys, hydrodynamical simulations, Sunyaev-Zeldovich effect, astro-ph.CO, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics
Abstract

We present a new measurement of the kinematic Sunyaev-Zel'dovich effect using data from the Atacama Cosmology Telescope (ACT) and the Baryon Oscillation Spectroscopic Survey (BOSS). Using 600 square degrees of overlapping sky area, we evaluate the mean pairwise baryon momentum associated with the positions of 50,000 bright galaxies in the BOSS DR11 Large Scale Structure catalog. A non-zero signal arises from the large-scale motions of halos containing the sample galaxies. The data fits an analytical signal model well, with the optical depth to microwave photon scattering as a free parameter determining the overall signal amplitude. We estimate the covariance matrix of the mean pairwise momentum as a function of galaxy separation, using microwave sky simulations, jackknife evaluation, and bootstrap estimates. The most conservative simulation-based errors give signal-to-noise estimates between 3.6 and 4.1 for varying galaxy luminosity cuts. We discuss how the other error determinations can lead to higher signal-to-noise values, and consider the impact of several possible systematic errors. Estimates of the optical depth from the average thermal Sunyaev-Zel'dovich signal at the sample galaxy positions are broadly consistent with those obtained from the mean pairwise momentum signal.

Published
2017

5. Advanced ACTPol Cryogenic Detector Arrays and Readout

Author

Henderson, S. W., Allison, R., Austermann, J., Baildon, T., Battaglia, N., Beall, J. A., Becker, D., De Bernardis, F., Bond, J. R., Calabrese, E., Choi, S. K., Coughlin, K. P., Crowley, K. T., Datta, R., Devlin, M. J., Duff, S. M., Dunner, R., Dunkley, J., van Engelen, A., Gallardo, P. A., Grace, E., Hasselfield, M., Hills, F., Hilton, G. C., Hincks, A. D., Hlozek, R., Ho, S. P., Hubmayr, J., Huffenberger, K., Hughes, J. P., Irwin, K. D., Koopman, B. J., Kosowsky, A. B., Li, D., McMahon, J., Munson, C., Nati, F., Newburgh, L., Niemack, M. D., Niraula, P., Page, L. A., Pappas, C. G., Salatino, M., Schillaci, A., Schmitt, B. L., Sehgal, N., Sherwin, B. D., Sievers, J. L., Simon, S. M., Spergel, D. N., Staggs, S. T., Stevens, J. R., Thornton, R., Van Lanen, J., Vavagiakis, E. M., Ward, J. T., and Wollack, E. J.

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

Advanced ACTPol is a polarization-sensitive upgrade for the 6 m aperture Atacama Cosmology Telescope (ACT), adding new frequencies and increasing sensitivity over the previous ACTPol receiver. In 2016, Advanced ACTPol will begin to map approximately half the sky in five frequency bands (28-230 GHz). Its maps of primary and secondary cosmic microwave background (CMB) anisotropies -- imaged in intensity and polarization at few arcminute-scale resolution -- will enable precision cosmological constraints and also a wide array of cross-correlation science that probes the expansion history of the universe and the growth of structure via gravitational collapse. To accomplish these scientific goals, the Advanced ACTPol receiver will be a significant upgrade to the ACTPol receiver, including four new multichroic arrays of cryogenic, feedhorn-coupled AlMn transition edge sensor (TES) polarimeters (fabricated on 150 mm diameter wafers); a system of continuously rotating meta-material silicon half-wave plates; and a new multiplexing readout architecture which uses superconducting quantum interference devices (SQUIDs) and time division to achieve a 64-row multiplexing factor. Here we present the status and scientific goals of the Advanced ACTPol instrument, emphasizing the design and implementation of the Advanced ACTPol cryogenic detector arrays., Comment: 9 pages, 3 figures, conference proceedings submitted to Journal of Low Temperature Physics

Published
2015
Full Text
View/download PDF

6. HerMES: ALMA Imaging of Herschel-selected Dusty Star-forming Galaxies

Author

Bussmann, R. S., Riechers, D., Fialkov, A., Scudder, J., Hayward, C. C., Cowley, W. I., Bock, J., Calanog, J., Chapman, S. C., Cooray, A., De Bernardis, F., Farrah, D., Fu, Hai, Gavazzi, R., Hopwood, R., Ivison, R. J., Jarvis, M., Lacey, C., Loeb, A., Oliver, S. J., Perez-Fournon, I., Rigopoulou, D., Roseboom, I. G., Scott, Douglas, Smith, A. J., Vieira, J. D., Wang, L., and Wardlow, J.

Subjects
Astrophysics - Astrophysics of Galaxies, Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

The Herschel Multi-tiered Extragalactic Survey (HerMES) has identified large numbers of dusty star-forming galaxies (DSFGs) over a wide range in redshift. A detailed understanding of these DSFGs is hampered by the limited spatial resolution of Herschel. We present 870um 0.45" resolution imaging from the Atacama Large Millimeter/submillimeter Array (ALMA) of 29 HerMES DSFGs with far-infrared (FIR) flux densities in between the brightest of sources found by Herschel and fainter DSFGs found in ground-based sub-millimeter (sub-mm) surveys. We identify 62 sources down to the 5-sigma point-source sensitivity limit in our ALMA sample (sigma~0.2mJy), of which 6 are strongly lensed (showing multiple images) and 36 experience significant amplification (mu>1.1). To characterize the properties of the ALMA sources, we introduce and make use of uvmcmcfit, a publicly available Markov chain Monte Carlo analysis tool for interferometric observations of lensed galaxies. Our lens models tentatively favor intrinsic number counts for DSFGs with a steep fall off above 8mJy at 880um. Nearly 70% of the Herschel sources comprise multiple ALMA counterparts, consistent with previous research indicating that the multiplicity rate is high in bright sub-mm sources. Our ALMA sources are located significantly closer to each other than expected based on results from theoretical models as well as fainter DSFGs identified in the LABOCA ECDFS Submillimeter Survey. The high multiplicity rate and low projected separations argue in favor of interactions and mergers driving the prodigious emission from the brightest DSFGs as well as the sharp downturn above S_880=8mJy., Comment: Accepted to ApJ. 26 pages, 8 figures, 5 tables

Published
2015
Full Text
View/download PDF

7. Evidence for the kinematic Sunyaev-Zel'dovich effect with the Atacama Cosmology Telescope and velocity reconstruction from the Baryon Oscillation Spectroscopic Survey

Author

Schaan, E, Ferraro, S, Vargas-Magaña, M, Smith, KM, Ho, S, Aiola, S, Battaglia, N, Bond, JR, De Bernardis, F, Calabrese, E, Cho, HM, Devlin, MJ, Dunkley, J, Gallardo, PA, Hasselfield, M, Henderson, S, Hill, JC, Hincks, AD, Hlozek, R, Hubmayr, J, Hughes, JP, Irwin, KD, Koopman, B, Kosowsky, A, Li, D, Louis, T, Lungu, M, Madhavacheril, M, Maurin, L, McMahon, JJ, Moodley, K, Naess, S, Nati, F, Newburgh, L, Niemack, MD, Page, LA, Pappas, CG, Partridge, B, Schmitt, BL, Sehgal, N, Sherwin, BD, Sievers, JL, Spergel, DN, Staggs, ST, Van Engelen, A, and Wollack, EJ

Subjects
astro-ph.CO
Abstract

We use microwave temperature maps from two seasons of data from the Atacama Cosmology Telescope at 146 GHz, together with the "Constant Mass" CMASS galaxy sample from the Baryon Oscillation Spectroscopic Survey to measure the kinematic Sunyaev-Zel'dovich (kSZ) effect over the redshift range z=0.4-0.7. We use galaxy positions and the continuity equation to obtain a reconstruction of the line-of-sight velocity field. We stack the microwave temperature at the location of each halo, weighted by the corresponding reconstructed velocity. We vary the size of the aperture photometry filter used, thus probing the free electron profile of these halos from within the virial radius out to three virial radii, on the scales relevant for investigating the missing baryons problem. The resulting best fit kSZ model is preferred over the no-kSZ hypothesis at 3.3 and 2.9σ for two independent velocity reconstruction methods, using 25,537 galaxies over 660 square degrees. The data suggest that the baryon profile is shallower than the dark matter in the inner regions of the halos probed here, potentially due to energy injection from active galactic nucleus or supernovae. Thus, by constraining the gas profile on a wide range of scales, this technique will be useful for understanding the role of feedback in galaxy groups and clusters. The effect of foregrounds that are uncorrelated with the galaxy velocities is expected to be well below our signal, and residual thermal Sunyaev-Zel'dovich contamination is controlled by masking the most massive clusters. Finally, we discuss the systematics involved in converting our measurement of the kSZ amplitude into the mean free electron fraction of the halos in our sample.

Published
2016

8. HerMES: Candidate High-Redshift Galaxies Discovered with Herschel/SPIRE

Author

Dowell, C. Darren, Conley, A., Glenn, J., Arumugam, V., Asboth, V., Aussel, H., Bertoldi, F., Bethermin, M., Bock, J., Boselli, A., Bridge, C., Buat, V., Burgarella, D., Cabrera-Lavers, A., Casey, C. M., Chapman, S. C., Clements, D. L., Conversi, L., Cooray, A., Dannerbauer, H., De Bernardis, F., Ellsworth-Bowers, T. P., Farrah, D., Franceschini, A., Griffin, M., Gurwell, M. A., Halpern, M., Hatziminaoglou, E., Heinis, S., Ibar, E., Ivison, R. J., Laporte, N., Marchetti, L., Martinez-Navajas, P., Marsden, G., Morrison, G. E., Nguyen, H. T., O'Halloran, B., Oliver, S. J., Omont, A., Page, M. J., Papageorgiou, A., Pearson, C. P., Petitpas, G., Perez-Fournon, I., Pohlen, M., Riechers, D., Rigopoulou, D., Roseboom, I. G., Rowan-Robinson, M., Sayers, J., Schulz, B., Scott, Douglas, Seymour, N., Shupe, D. L., Smith, A. J., Streblyanska, A., Symeonidis, M., Vaccari, M., Valtchanov, I., Vieira, J. D., Viero, M., Wang, L., Wardlow, J., Xu, C. K., and Zemcov, M.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics
Abstract

We present a method for selecting $z>4$ dusty, star forming galaxies (DSFGs) using Herschel/SPIRE 250/350/500 $\mu m$ flux densities to search for red sources. We apply this method to 21 deg$^2$ of data from the HerMES survey to produce a catalog of 38 high-$z$ candidates. Follow-up of the first 5 of these sources confirms that this method is efficient at selecting high-$z$ DSFGs, with 4/5 at $z=4.3$ to $6.3$ (and the remaining source at $z=3.4$), and that they are some of the most luminous dusty sources known. Comparison with previous DSFG samples, mostly selected at longer wavelengths (e.g., 850 $\mu m$) and in single-band surveys, shows that our method is much more efficient at selecting high-$z$ DSFGs, in the sense that a much larger fraction are at $z>3$. Correcting for the selection completeness and purity, we find that the number of bright ($S_{500\,\mu m} \ge 30$ mJy), red Herschel sources is $3.3 \pm 0.8$ deg$^{-2}$. This is much higher than the number predicted by current models, suggesting that the DSFG population extends to higher redshifts than previously believed. If the shape of the luminosity function for high-$z$ DSFGs is similar to that at $z\sim2$, rest-frame UV based studies may be missing a significant component of the star formation density at $z=4$ to $6$, even after correction for extinction., Comment: Accepted for publication in ApJ

Published
2013
Full Text
View/download PDF

9. Gravitational Lens Models Based on Submillimeter Array Imaging of Herschel-selected Strongly Lensed Sub-millimeter Galaxies at z>1.5

Author

Bussmann, R. S., Perez-Fournon, I., Amber, S., Calanog, J., Gurwell, M. A., Dannerbauer, H., De Bernardis, F., Fu, Hai, Harris, A. I., Krips, M., Lapi, A., Maiolino, R., Omont, A., Riechers, D., Wardlow, J., Baker, A. J., Birkinshaw, M., Bock, J., Bourne, N., Clements, D. L., Cooray, A., De Zotti, G., Dunne, L., Dye, S., Eales, S., Farrah, D., Gavazzi, R., Nuevo, J. Gonzalez, Hopwood, R., Ibar, E., Ivison, R. J., Laporte, N., Maddox, S., Martinez-Navajas, P., Michalowski, M., Negrello, M., Oliver, S. J., Roseboom, I. G., Scott, Douglas, Serjeant, S., Smith, A. J., Smith, Matthew, Streblyanska, A., Valiante, E., van der Werf, P., Verma, A., Vieira, J. D., Wang, L., and Wilner, D.

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Astrophysics of Galaxies
Abstract

Strong gravitational lenses are now being routinely discovered in wide-field surveys at (sub)millimeter wavelengths. We present Submillimeter Array (SMA) high-spatial resolution imaging and Gemini-South and Multiple Mirror Telescope optical spectroscopy of strong lens candidates discovered in the two widest extragalactic surveys conducted by the Herschel Space Observatory: the Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) and the Herschel Multi-tiered Extragalactic Survey (HerMES). From a sample of 30 Herschel sources with S_500>100 mJy, 21 are strongly lensed (multiply imaged), 4 are moderately lensed (singly imaged), and the remainder require additional data to determine their lensing status. We apply a visibility-plane lens modeling technique to the SMA data to recover information about the masses of the lenses as well as the intrinsic (i.e., unlensed) sizes (r_half) and far-infrared luminosities (L_FIR) of the lensed submillimeter galaxies (SMGs). The sample of lenses comprises primarily isolated massive galaxies, but includes some groups and clusters as well. Several of the lenses are located at z_lens>0.7, a redshift regime that is inaccessible to lens searches based on Sloan Digital Sky Survey spectroscopy. The lensed SMGs are amplified by factors that are significantly below statistical model predictions given the 500um flux densities of our sample. We speculate that this may reflect a deficiency in our understanding of the intrinsic sizes and luminosities of the brightest SMGs. The lensed SMGs span nearly one decade in L_FIR (median L_FIR=7.9x10^12 L_sun) and two decades in FIR luminosity surface density (median Sigma_FIR=6.0x10^11 L_sun kpc^-2). The strong lenses in this sample and others identified via (sub-)mm surveys will provide a wealth of information regarding the astrophysics of galaxy formation and evolution over a wide range in redshift., Comment: 28 pages, 7 tables, 9 figures. Accepted to ApJ; revised following minor comments from the referee and the community at large

Published
2013
Full Text
View/download PDF

10. Cosmological and Astrophysical Neutrino Mass Measurements

Author

Abazajian, K. N., Calabrese, E., Cooray, A., De Bernardis, F., Dodelson, S., Friedland, A., Fuller, G. M., Hannestad, S., Keating, B. G., Linder, E. V., Lunardini, C., Melchiorri, A., Miquel, R., Pierpaoli, E., Pritchard, J., Serra, P., Takada, M., and Wong, Y. Y. Y.

Subjects
Astrophysics - Cosmology and Extragalactic Astrophysics, High Energy Physics - Phenomenology
Abstract

Cosmological and astrophysical measurements provide powerful constraints on neutrino masses complementary to those from accelerators and reactors. Here we provide a guide to these different probes, for each explaining its physical basis, underlying assumptions, current and future reach., Comment: 11 pages

Published
2011
Full Text
View/download PDF

11. The Origin of the Universe as Revealed Through the Polarization of the Cosmic Microwave Background

Author

Dodelson, S., Easther, R., Hanany, S., McAllister, L., Meyer, S., Page, L., Ade, P., Amblard, A., Ashoorioon, A., Baccigalupi, C., Balbi, A., Bartlett, J., Bartolo, N., Baumann, D., Beltran, M., Benford, D., Birkinshaw, M., Bock, J., Bond, D., Borrill, J., Bouchet, F., Bridges, M., Bunn, E., Calabrese, E., Cantalupo, C., Caramete, A., Carbone, C., Carroll, S., Chatterjee, S., Chen, X., Church, S., Chuss, D., Contaldi, C., Cooray, A., Creminelli, P., Das, S., De Bernardis, F., de Bernardis, P., Delabrouille, J., Desert, F. -X., Devlin, M., Dickinson, C., Dicker, S., DiPirro, M., Dobbs, M., Dore, O., Dotson, J., Dunkley, J., Dvorkin, C., Eriksen, H. K., Falvella, M. Cristina, Finley, D., Finkbeiner, D., Fixsen, D., Flauger, R., Fosalba, P., Fowler, J., Galli, S., Gates, E., Gear, W., Giraud-Heraud, Y., Gorski, K., Greene, B., and Gruppuso, A.

Subjects
Astrophysics - Cosmology and Extragalactic Astrophysics
Abstract

Modern cosmology has sharpened questions posed for millennia about the origin of our cosmic habitat. The age-old questions have been transformed into two pressing issues primed for attack in the coming decade: How did the Universe begin? and What physical laws govern the Universe at the highest energies? The clearest window onto these questions is the pattern of polarization in the Cosmic Microwave Background (CMB), which is uniquely sensitive to primordial gravity waves. A detection of the special pattern produced by gravity waves would be not only an unprecedented discovery, but also a direct probe of physics at the earliest observable instants of our Universe. Experiments which map CMB polarization over the coming decade will lead us on our first steps towards answering these age-old questions., Comment: Science White Paper submitted to the US Astro2010 Decadal Survey. Full list of 212 author available at http://cmbpol.uchicago.edu

Published
2009

12. HerMES: CANDIDATE HIGH-REDSHIFT GALAXIES DISCOVERED WITH HERSCHEL/SPIRE**http://hermes.sussex.ac.uk.,††Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.

Author

Dowell, C Darren, Conley, A, Glenn, J, Arumugam, V, Asboth, V, Aussel, H, Bertoldi, F, Béthermin, M, Bock, J, Boselli, A, Bridge, C, Buat, V, Burgarella, D, Cabrera-Lavers, A, Casey, CM, Chapman, SC, Clements, DL, Conversi, L, Cooray, A, Dannerbauer, H, De Bernardis, F, Ellsworth-Bowers, TP, Farrah, D, Franceschini, A, Griffin, M, Gurwell, MA, Halpern, M, Hatziminaoglou, E, Heinis, S, Ibar, E, Ivison, RJ, Laporte, N, Marchetti, L, Martínez-Navajas, P, Marsden, G, Morrison, GE, Nguyen, HT, O'Halloran, B, Oliver, SJ, Omont, A, Page, MJ, Papageorgiou, A, Pearson, CP, Petitpas, G, Pérez-Fournon, I, Pohlen, M, Riechers, D, Rigopoulou, D, Roseboom, IG, Rowan-Robinson, M, Sayers, J, Schulz, B, Scott, Douglas, Seymour, N, Shupe, DL, Smith, AJ, Streblyanska, A, Symeonidis, M, Vaccari, M, Valtchanov, I, Vieira, JD, Viero, M, Wang, L, Wardlow, J, Xu, CK, and Zemcov, M

Subjects
galaxies: high-redshift, galaxies: starburst, infrared: galaxies, submillimeter: galaxies, astro-ph.CO, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural), Astronomy & Astrophysics
Abstract

We present a method for selecting z > 4 dusty, star-forming galaxies (DSFGs) using Herschel/Spectral and Photometric Imaging Receiver 250/350/500 μm flux densities to search for red sources. We apply this method to 21 deg2 of data from the HerMES survey to produce a catalog of 38 high-z candidates. Follow-up of the first five of these sources confirms that this method is efficient at selecting high-z DSFGs, with 4/5 at z = 4.3-6.3 (and the remaining source at z = 3.4), and that they are some of the most luminous dusty sources known. Comparison with previous DSFG samples, mostly selected at longer wavelengths (e.g., 850 μm) and in single-band surveys, shows that our method is much more efficient at selecting high-z DSFGs, in the sense that a much larger fraction are at z > 3. Correcting for the selection completeness and purity, we find that the number of bright (S 500 μm ≥ 30 mJy), red Herschel sources is 3.3 ± 0.8 deg-2. This is much higher than the number predicted by current models, suggesting that the DSFG population extends to higher redshifts than previously believed. If the shape of the luminosity function for high-z DSFGs is similar to that at z ∼ 2, rest-frame UV based studies may be missing a significant component of the star formation density at z = 4-6, even after correction for extinction. © 2014. The American Astronomical Society. All rights reserved.

Published
2014

13. GRAVITATIONAL LENS MODELS BASED ON SUBMILLIMETER ARRAY**The Submillimeter Array is a joint project between the Smithsonian Astrophysical Observatory and the Academia Sinica Institute of Astronomy and Astrophysics and is funded by the Smithsonian Institution and the Academia Sinica. IMAGING OF HERSCHEL††Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.-SELECTED STRONGLY LENSED SUB-MILLIMETER GALAXIES AT z > 1.5

Author

Bussmann, RS, Pérez-Fournon, I, Amber, S, Calanog, J, Gurwell, MA, Dannerbauer, H, De Bernardis, F, Fu, Hai, Harris, AI, Krips, M, Lapi, A, Maiolino, R, Omont, A, Riechers, D, Wardlow, J, Baker, AJ, Birkinshaw, M, Bock, J, Bourne, N, Clements, DL, Cooray, A, De Zotti, G, Dunne, L, Dye, S, Eales, S, Farrah, D, Gavazzi, R, Nuevo, J González, Hopwood, R, Ibar, E, Ivison, RJ, Laporte, N, Maddox, S, Martínez-Navajas, P, Michalowski, M, Negrello, M, Oliver, SJ, Roseboom, IG, Scott, Douglas, Serjeant, S, Smith, AJ, Smith, Matthew, Streblyanska, A, Valiante, E, van der Werf, P, Verma, A, Vieira, JD, Wang, L, and Wilner, D

Subjects
galaxies: evolution, galaxies: fundamental parameters, galaxies: halos, galaxies: high-redshift, gravitational lensing: strong, astro-ph.CO, astro-ph.GA, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural), Astronomy & Astrophysics
Abstract

Strong gravitational lenses are now being routinely discovered in wide-field surveys at (sub-)millimeter wavelengths. We present Submillimeter Array (SMA) high-spatial resolution imaging and Gemini-South and Multiple Mirror Telescope optical spectroscopy of strong lens candidates discovered in the two widest extragalactic surveys conducted by the Herschel Space Observatory: the Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) and the Herschel Multi-tiered Extragalactic Survey (HerMES). From a sample of 30 Herschel sources with S 500 > 100 mJy, 21 are strongly lensed (i.e., multiply imaged), 4 are moderately lensed (i.e., singly imaged), and the remainder require additional data to determine their lensing status. We apply a visibility-plane lens modeling technique to the SMA data to recover information about the masses of the lenses as well as the intrinsic (i.e., unlensed) sizes (r half) and far-infrared luminosities (L FIR) of the lensed submillimeter galaxies (SMGs). The sample of lenses comprises primarily isolated massive galaxies, but includes some groups and clusters as well. Several of the lenses are located at z lens > 0.7, a redshift regime that is inaccessible to lens searches based on Sloan Digital Sky Survey spectroscopy. The lensed SMGs are amplified by factors that are significantly below statistical model predictions given the 500 μm flux densities of our sample. We speculate that this may reflect a deficiency in our understanding of the intrinsic sizes and luminosities of the brightest SMGs. The lensed SMGs span nearly one decade in L FIR (median L FIR = 7.9 × 10 12 L ) and two decades in FIR luminosity surface density (median ΣFIR = 6.0 × 1011 L kpc-2). The strong lenses in this sample and others identified via (sub-)mm surveys will provide a wealth of information regarding the astrophysics of galaxy formation and evolution over a wide range in redshift. © 2013. The American Astronomical Society. All rights reserved..

Published
2013

14. Gravitational lens models based on Submillimeter Array Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.-selected strongly lensed sub-millimeter galaxies at z > 1.5

Author

Bussmann, RS, Pérez-Fournon, I, Amber, S, Calanog, J, Gurwell, MA, Dannerbauer, H, De Bernardis, F, Fu, H, Harris, AI, Krips, M, Lapi, A, Maiolino, R, Omont, A, Riechers, D, Wardlow, J, Baker, AJ, Birkinshaw, M, Bock, J, Bourne, N, Clements, DL, Cooray, A, De Zotti, G, Dunne, L, Dye, S, Eales, S, Farrah, D, Gavazzi, R, González Nuevo, J, Hopwood, R, Ibar, E, Ivison, RJ, Laporte, N, Maddox, S, Martínez-Navajas, P, Michalowski, M, Negrello, M, Oliver, SJ, Roseboom, IG, Scott, D, Serjeant, S, Smith, AJ, Smith, M, Streblyanska, A, Valiante, E, Van Der Werf, P, Verma, A, Vieira, JD, Wang, L, and Wilner, D

Subjects
galaxies: evolution, galaxies: fundamental parameters, galaxies: halos, galaxies: high-redshift, gravitational lensing: strong, astro-ph.CO, astro-ph.GA, Astronomy & Astrophysics, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Physical Chemistry (incl. Structural)
Abstract

Strong gravitational lenses are now being routinely discovered in wide-field surveys at (sub-)millimeter wavelengths. We present Submillimeter Array (SMA) high-spatial resolution imaging and Gemini-South and Multiple Mirror Telescope optical spectroscopy of strong lens candidates discovered in the two widest extragalactic surveys conducted by the Herschel Space Observatory: the Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) and the Herschel Multi-tiered Extragalactic Survey (HerMES). From a sample of 30 Herschel sources with S 500 > 100 mJy, 21 are strongly lensed (i.e., multiply imaged), 4 are moderately lensed (i.e., singly imaged), and the remainder require additional data to determine their lensing status. We apply a visibility-plane lens modeling technique to the SMA data to recover information about the masses of the lenses as well as the intrinsic (i.e., unlensed) sizes (r half) and far-infrared luminosities (L FIR) of the lensed submillimeter galaxies (SMGs). The sample of lenses comprises primarily isolated massive galaxies, but includes some groups and clusters as well. Several of the lenses are located at z lens > 0.7, a redshift regime that is inaccessible to lens searches based on Sloan Digital Sky Survey spectroscopy. The lensed SMGs are amplified by factors that are significantly below statistical model predictions given the 500 μm flux densities of our sample. We speculate that this may reflect a deficiency in our understanding of the intrinsic sizes and luminosities of the brightest SMGs. The lensed SMGs span nearly one decade in L FIR (median L FIR = 7.9 × 10 12 L ) and two decades in FIR luminosity surface density (median ΣFIR = 6.0 × 1011 L kpc-2). The strong lenses in this sample and others identified via (sub-)mm surveys will provide a wealth of information regarding the astrophysics of galaxy formation and evolution over a wide range in redshift. © 2013. The American Astronomical Society. All rights reserved..

Published
2013

15. Cosmological and astrophysical neutrino mass measurements

Author

Abazajian, KN, Calabrese, E, Cooray, A, De Bernardis, F, Dodelson, S, Friedland, A, Fuller, GM, Hannestad, S, Keating, BG, Linder, EV, Lunardini, C, Melchiorri, A, Miquel, R, Pierpaoli, E, Pritchard, J, Serra, P, Takada, M, and Wong, YYY

Subjects
Nuclear and Plasma Physics, Particle and High Energy Physics, Physical Sciences, Neutrinos, Cosmology, astro-ph.CO, hep-ph, Astronomical and Space Sciences, Atomic, Molecular, Nuclear, Particle and Plasma Physics, Nuclear & Particles Physics, Astronomical sciences, Particle and high energy physics
Abstract

Cosmological and astrophysical measurements provide powerful constraints on neutrino masses complementary to those from accelerators and reactors. Here we provide a guide to these different probes, for each explaining its physical basis, underlying assumptions, current and future reach. © 2011 Elsevier B.V. All rights reserved.

Published
2011

16. Advanced ACTPol Cryogenic Detector Arrays and Readout

Author

Henderson, S. W., Allison, R., Austermann, J., Baildon, T., Battaglia, N., Beall, J. A., Becker, D., De Bernardis, F., Bond, J. R., Calabrese, E., Choi, S. K., Coughlin, K. P., Crowley, K. T., Datta, R., Devlin, M. J., Duff, S. M., Dunkley, J., Dünner, R., van Engelen, A., Gallardo, P. A., Grace, E., Hasselfield, M., Hills, F., Hilton, G. C., Hincks, A. D., Hloẑek, R., Ho, S. P., Hubmayr, J., Huffenberger, K., Hughes, J. P., Irwin, K. D., Koopman, B. J., Kosowsky, A. B., Li, D., McMahon, J., Munson, C., Nati, F., Newburgh, L., Niemack, M. D., Niraula, P., Page, L. A., Pappas, C. G., Salatino, M., Schillaci, A., Schmitt, B. L., Sehgal, N., Sherwin, B. D., Sievers, J. L., Simon, S. M., Spergel, D. N., Staggs, S. T., Stevens, J. R., Thornton, R., Van Lanen, J., Vavagiakis, E. M., Ward, J. T., and Wollack, E. J.

Published
2016
Full Text
View/download PDF

25. List of Contributors

Author

Abu-Shakra, Mahmoud, primary, Amital, Howard, additional, Bakimer, Ronit, additional, Ban, Nenad, additional, Bazzichi, Agostino, additional, Benden, Andrea, additional, De Bernardis, F., additional, Bhattacharya-Chatterjee, Malaya, additional, Bona, Constantin A., additional, Braden, Bradford C., additional, Brodeur, Bernard R., additional, Buskila, Dan, additional, Carbone, Michele, additional, Cassone, Antonio, additional, Chapman, Paul B., additional, Conti, S., additional, Csernok, Elena, additional, Dakovska, Lilia, additional, Dammacco, Franco, additional, Dang, Howard, additional, Dayan, Yaron Bar, additional, Desai, Smruti, additional, Ertl, Hildegund C.J., additional, Falcone, Giuseppe, additional, Fagerberg, Jan, additional, Ferrone, Soldano, additional, Fishman, Pnina, additional, Foon, Kenneth A., additional, Gaida, Franz-Josef, additional, Garzelli, Carlo, additional, Gerloni, M., additional, Eric Gershwin, M., additional, Grant, Michael, additional, Greenspan, Neil S., additional, Gross, Wolfgang L., additional, Hamel, Josée, additional, Harris, David, additional, Herlyn, Dorothee, additional, Hinkula, Jorma, additional, Incaprera, Marina, additional, Indiveri, Franco, additional, Jacob, Lutz, additional, Jacquemin, Marc G., additional, Karpatkin, Simon, additional, Karray, Saoussen, additional, Kaveri, Srini, additional, Kazatchkine, Michel D., additional, Kehayov, Ivan, additional, Kennedy, Ronald C., additional, Köhler, Heinz, additional, Krebs, Dieter, additional, Kunicki, Thomas J., additional, Kyurkchiev, Stanimir, additional, Lefvert, Ann Kari, additional, Leung, Patrick S.C., additional, Levi, Michael, additional, Li, Weiping, additional, Lin, Min, additional, Lucas, Alexander H., additional, Mageed, Rizgar A., additional, Manolova, Vanya, additional, Maruyama, Haruhiko, additional, Mastrangelo, Michael, additional, McPherson, Alexander, additional, Mellstedt, Hakan, additional, Merimsky, Ofer, additional, Mittelman, Abraham, additional, Monestier, Marc, additional, Moyes, Sasha P., additional, Müller, Sybille, additional, Nardi, M.A., additional, Natvig, Jacob B., additional, Neumaier, Michael, additional, Nisonoff, Alfred, additional, Noronha, Elvyra J., additional, Nugent, Diane J., additional, Oosterwijk, Egbert, additional, Pass, Harvey I., additional, Perosa, Federico, additional, Pieper, Dagmar, additional, Poljak, Roberto J., additional, Polonelli, L., additional, Ragnhammar, Peter, additional, Reinsberg, Jochen, additional, Roux, Kenneth H., additional, Saint-Remy, Jean-Marie R., additional, Schlebusch, Harald, additional, Schmolling, Jan, additional, Schreiber, John R., additional, Scudeletti, Marco, additional, Shearer, Michael H., additional, Sherman, Mark A., additional, Shively, John E., additional, Shoenfeld, Yehuda, additional, Somasundaram, Rajasekharan, additional, Spalter, Sergio H., additional, Stamenova, Maria, additional, Tackaberry, Eilleen S., additional, Talal, Norman, additional, Thanavala, Yasmin, additional, Thompson, Keith M., additional, Tomer, Yaron, additional, Tsvetkova, Vasilka, additional, Uemura, H., additional, Wagner, Uwe, additional, Wahren, Britta, additional, Wang, Xinhui, additional, Ward, Ronald E., additional, Youinou, Pierre, additional, Zaloudik, Jan, additional, Zhou, En-Min, additional, and Zouali, Moncef, additional

Published
1997
Full Text
View/download PDF

27. Vaginopathic and proteolytic Candida species in outpatients attending a gynecology clinic

Author

Agatensi, L., Franchi, F., Mondello, F., Bevilacqua, R.L., Ceddia, T., De Bernardis, F., and Cassone, A.

Subjects
Candida albicans -- Physiological aspects, Vaginitis -- Causes of, Candidiasis -- Physiological aspects, Mycoses -- Physiological aspects, Proteases -- Physiological aspects, Health
Abstract

The correlation between the presence of certain types of yeast in the vagina and vaginitis (inflammation of the tissues of the vagina) was examined in women who had vaginitis and women without clinical symptoms of disease. Yeast were isolated from 82 percent of patients (186 of 228) with vaginitis and from 32 percent of women (122 out of 380) without disease. The species of yeast that were prevalent were Candida albicans, Candida glabrata, Candida krusei, Candida parapsilosis, and Saccharomyces cerevisiae. Candida albicans and Candida parapsilosis were more commonly found in women with vaginitis. Candida glabrata is known to cause disease and, therefore, it was surprising that this species was not found more often in patients with vaginitis. It is not known what happens to change the state of the yeast from being noninfectious to being infectious. The two species that were found more often in women with vaginitis secrete an enzyme known as aspartyl proteinase, which degrades proteins. The levels of the proteinase found in individuals with vaginitis were higher than those in individuals with the yeast who did not yet have symptoms of disease. This enzyme may be involved in the process of disease and may be used as a laboratory test for differentiating women with disease from those who are just carriers of the yeast. (Consumer Summary produced by Reliance Medical Information, Inc.)

Published
1991

29. Advanced ACTPol Cryogenic Detector Arrays and Readout

Author

Henderson, S, Allison, R, Austermann, J, Baildon, T, Battaglia, N, Beall, J, Becker, D, De Bernardis, F, Bond, J, Calabrese, E, Choi, S, Coughlin, K, Crowley, K, Datta, R, Devlin, M, Duff, S, Dunkley, J, Dã1⁄4nner, R, van Engelen, A, Gallardo, P, Grace, E, Hasselfield, M, Hills, F, Hilton, G, Hincks, A, Hloẑek, R, Ho, S, Hubmayr, J, Huffenberger, K, Hughes, J, Irwin, K, Koopman, B, Kosowsky, A, Li, D, Mcmahon, J, Munson, C, Nati, F, Newburgh, L, Niemack, M, Niraula, P, Page, L, Pappas, C, Salatino, M, Schillaci, A, Schmitt, B, Sehgal, N, Sherwin, B, Sievers, J, Simon, S, Spergel, D, Staggs, S, Stevens, J, Thornton, R, Van Lanen, J, Vavagiakis, E, Ward, J, Wollack, E, Henderson S.W, Allison R., Austermann J., Baildon T., Battaglia N., Beall J.A., Becker D., De Bernardis F., Bond J.R., Calabrese E., Choi S.K., Coughlin K.P., Crowley K.T., Datta R., Devlin M.J., Duff S.M., Dunkley J., Dã1⁄4nner R., van Engelen A., Gallardo P.A., Grace E., Hasselfield M., Hills F., Hilton G.C., Hincks A.D., Hloẑek R., Ho S.P., Hubmayr J., Huffenberger K., Hughes J.P., Irwin K.D., Koopman B.J., Kosowsky A.B., Li D., Mcmahon J., Munson C., Nati F., Newburgh L., Niemack M.D., Niraula P., Page L.A., Pappas C.G., Salatino M., Schillaci A., Schmitt B.L., Sehgal N., Sherwin B.D., Sievers J.L., Simon S.M., Spergel D.N., Staggs S.T., Stevens J.R., Thornton R., Van Lanen J., Vavagiakis E.M., Ward J.T., Wollack E.J., Henderson, S, Allison, R, Austermann, J, Baildon, T, Battaglia, N, Beall, J, Becker, D, De Bernardis, F, Bond, J, Calabrese, E, Choi, S, Coughlin, K, Crowley, K, Datta, R, Devlin, M, Duff, S, Dunkley, J, Dã1⁄4nner, R, van Engelen, A, Gallardo, P, Grace, E, Hasselfield, M, Hills, F, Hilton, G, Hincks, A, Hloẑek, R, Ho, S, Hubmayr, J, Huffenberger, K, Hughes, J, Irwin, K, Koopman, B, Kosowsky, A, Li, D, Mcmahon, J, Munson, C, Nati, F, Newburgh, L, Niemack, M, Niraula, P, Page, L, Pappas, C, Salatino, M, Schillaci, A, Schmitt, B, Sehgal, N, Sherwin, B, Sievers, J, Simon, S, Spergel, D, Staggs, S, Stevens, J, Thornton, R, Van Lanen, J, Vavagiakis, E, Ward, J, Wollack, E, Henderson S.W, Allison R., Austermann J., Baildon T., Battaglia N., Beall J.A., Becker D., De Bernardis F., Bond J.R., Calabrese E., Choi S.K., Coughlin K.P., Crowley K.T., Datta R., Devlin M.J., Duff S.M., Dunkley J., Dã1⁄4nner R., van Engelen A., Gallardo P.A., Grace E., Hasselfield M., Hills F., Hilton G.C., Hincks A.D., Hloẑek R., Ho S.P., Hubmayr J., Huffenberger K., Hughes J.P., Irwin K.D., Koopman B.J., Kosowsky A.B., Li D., Mcmahon J., Munson C., Nati F., Newburgh L., Niemack M.D., Niraula P., Page L.A., Pappas C.G., Salatino M., Schillaci A., Schmitt B.L., Sehgal N., Sherwin B.D., Sievers J.L., Simon S.M., Spergel D.N., Staggs S.T., Stevens J.R., Thornton R., Van Lanen J., Vavagiakis E.M., Ward J.T., and Wollack E.J.

Abstract

Advanced ACTPol is a polarization-sensitive upgrade for the 6 m aperture Atacama Cosmology Telescope, adding new frequencies and increasing sensitivity over the previous ACTPol receiver. In 2016, Advanced ACTPol will begin to map approximately half the sky in five frequency bands (28–230 GHz). Its maps of primary and secondary cosmic microwave background anisotropies—imaged in intensity and polarization at few arcminute-scale resolution—will enable precision cosmological constraints and also a wide array of cross-correlation science that probes the expansion history of the universe and the growth of structure via gravitational collapse. To accomplish these scientific goals, the Advanced ACTPol receiver will be a significant upgrade to the ACTPol receiver, including four new multichroic arrays of cryogenic, feedhorn-coupled AlMn transition edge sensor polarimeters (fabricated on 150 mm diameter wafers); a system of continuously rotating meta-material silicon half-wave plates; and a new multiplexing readout architecture which uses superconducting quantum interference devices and time division to achieve a 64-row multiplexing factor. Here we present the status and scientific goals of the Advanced ACTPol instrument, emphasizing the design and implementation of the Advanced ACTPol cryogenic detector arrays.

Published
2016

30. Candida vaginitis: Virulence, host response and vaccine prospects

Author

De Bernardis, F. Graziani, S. Tirelli, F. Antonopoulou, S.

Abstract

Vulvovaginal candidiasis is a common mucosal infection affecting a large proportion of women with some of them affected by recurrent often intractable forms of the disease. Thus, there is an increasing interest in understanding the pathogenesis of this disease. The aim of our work was to characterize, in animal models of vaginal candidiasis, the components of the host-fungus interaction at the mucosal level. The evidence of an immune response in the vaginal compartment was very encouraging to identify the proper targets for new strategies for vaccination or immunotherapy of vaginal candidiasis. Aspartyl-proteinase (Sap2), which is an important immunodominant antigens and virulence factors of C.albicans acting in mucosal infections, was assembled with virosomes and a vaccine PEV7 was obtained. The results obtained in the mouse model and in the clinical trial conducted by Pevion on women have evidenced that the vaccine PEV7, intravaginally administered, has an encouraging therapeutic potential for the treatment of recurrent vulvovaginal candidiasis. This opens the way to a modality for anti-Candida protection at mucosal level. © The Author(s) 2017. Published by Oxford University Press on behalf of The International Society for Human and Animal Mycology.

Published
2018

31. The Herschel-SPIRE Legacy Survey (HSLS): the scientific goals of a shallow and wide submillimeter imaging survey with SPIRE

Author

Cooray, A, Eales, S, Chapman, S, Clements, D, Dore, O, Farrah, D, Jarvis, M, Kaplinghat, M, Negrello, M, Melchiorri, A, Peiris, H, Pope, A, Santos, MG, Serjeant, S, Thompson, M, White, G, Amblard, A, Banerji, M, Corasaniti, P, Das, S, de_Bernardis, F, de_Zotti, G, Giannantonio, T, Gonzalez, J, and Khostovan, A

Abstract

A large sub-mm survey with Herschel will enable many exciting science opportunities, especially in an era of wide-field optical and radio surveys and high resolution cosmic microwave background experiments. The Herschel-SPIRE Legacy Survey (HSLS), will lead to imaging data over 4000 sq. degrees at 250, 350, and 500 micron. Major Goals of HSLS are: (a) produce a catalog of 2.5 to 3 million galaxies down to 26, 27 and 33 mJy (50% completeness; 5 sigma confusion noise) at 250, 350 and 500 micron, respectively, in the southern hemisphere (3000 sq. degrees) and in an equatorial strip (1000 sq. degrees), areas which have extensive multi-wavelength coverage and are easily accessible from ALMA. Two thirds of the of the sources are expected to be at z > 1, one third at z > 2 and about a 1000 at z > 5. (b) Remove point source confusion in secondary anisotropy studies with Planck and ground-based CMB data. (c) Find at least 1200 strongly lensed bright sub-mm sources leading to a 2% test of general relativity. (d) Identify 200 proto-cluster regions at z of 2 and perform an unbiased study of the environmental dependence of star formation. (e) Perform an unbiased survey for star formation and dust at high Galactic latitude and make a census of debris disks and dust around AGB stars and white dwarfs.

Published
2016

32. Survey strategy optimization for the Atacama Cosmology Telescope

Author

De Bernardis, F, Stevens, J, Hasselfield, M, Alonso, D, Bond, J, Calabrese, E, Choi, S, Crowley, K, Devlin, M, Dunkley, J, Gallardo, P, Henderson, S, Hilton, M, Hlozek, R, Ho, S, Huffenberger, K, Koopman, B, Kosowsky, A, Louis, T, Madhavacheril, M, Mcmahon, J, Næss, S, Nati, F, Newburgh, L, Niemack, M, Page, L, Salatino, M, Schillaci, A, Schmitt, B, Sehgal, N, Sievers, J, Simon, S, Spergel, D, Staggs, S, Van Engelen, A, Vavagiakis, E, Wollack, E, Stevens, JR, Bond, JR, Choi, SK, Crowley, K T, Gallardo, PA, Henderson, SW, Ho, SP, Koopman, BJ, Madhavacheril, M S, McMahon, J, Niemack, MD, Page, LA, Schmitt, BL, Sievers, JL, Simon, SM, Spergel, DN, Staggs, ST, Vavagiakis, E M, Wollack, EJ, De Bernardis, F, Stevens, J, Hasselfield, M, Alonso, D, Bond, J, Calabrese, E, Choi, S, Crowley, K, Devlin, M, Dunkley, J, Gallardo, P, Henderson, S, Hilton, M, Hlozek, R, Ho, S, Huffenberger, K, Koopman, B, Kosowsky, A, Louis, T, Madhavacheril, M, Mcmahon, J, Næss, S, Nati, F, Newburgh, L, Niemack, M, Page, L, Salatino, M, Schillaci, A, Schmitt, B, Sehgal, N, Sievers, J, Simon, S, Spergel, D, Staggs, S, Van Engelen, A, Vavagiakis, E, Wollack, E, Stevens, JR, Bond, JR, Choi, SK, Crowley, K T, Gallardo, PA, Henderson, SW, Ho, SP, Koopman, BJ, Madhavacheril, M S, McMahon, J, Niemack, MD, Page, LA, Schmitt, BL, Sievers, JL, Simon, SM, Spergel, DN, Staggs, ST, Vavagiakis, E M, and Wollack, EJ

Abstract

In recent years there have been significant improvements in the sensitivity and the angular resolution of the instruments dedicated to the observation of the Cosmic Microwave Background (CMB). ACTPol is the first polarization receiver for the Atacama Cosmology Telescope (ACT) and is observing the CMB sky with arcmin resolution over ∼2000 sq. deg. Its upgrade, Advanced ACTPol (AdvACT), will observe the CMB in five frequency bands and over a larger area of the sky. We describe the optimization and implementation of the ACTPol and AdvACT surveys. The selection of the observed fields is driven mainly by the science goals, that is, small angular scale CMB measurements, B-mode measurements and cross-correlation studies. For the ACTPol survey we have observed patches of the southern galactic sky with low galactic foreground emissions which were also chosen to maximize the overlap with several galaxy surveys to allow unique cross-correlation studies. A wider field in the northern galactic cap ensured significant additional overlap with the BOSS spectroscopic survey. The exact shapes and footprints of the fields were optimized to achieve uniform coverage and to obtain cross-linked maps by observing the fields with different scan directions. We have maximized the efficiency of the survey by implementing a close to 24 hour observing strategy, switching between daytime and nighttime observing plans and minimizing the telescope idle time. We describe the challenges represented by the survey optimization for the significantly wider area observed by AdvACT, which will observe roughly half of the low-foreground sky. The survey strategies described here may prove useful for planning future ground-based CMB surveys, such as the Simons Observatory and CMB Stage IV surveys.

Published
2016

33. [Untitled]

Author

Adriani D, Pasqualina Crateri, Calderone Ra, Giuseppe Arancia, Antonio Cassone, Annarita Stringaro, and De Bernardis F

Subjects
Pathology, medicine.medical_specialty, Veterinary (miscellaneous), Immunoelectron microscopy, Cell, Immunogold labelling, Biology, biology.organism_classification, Applied Microbiology and Biotechnology, Microbiology, Molecular biology, Corpus albicans, medicine.anatomical_structure, Cytoplasm, In vivo, medicine, Candida albicans, Agronomy and Crop Science, Immunostaining
Abstract

The expression of the Candida albicans complement-binding C3d protein (MP60) was investigated both in vitro and in vivo by immunogold labelling and electron microscopy. In vivo expression was determined in a rat vaginitis model. Reactivity of in vitro-grown cells to an anti-MP60 rabbit serum was associated with both cytoplasmic and cell wall sites. Immunostaining in the cell wall of both yeast and hyphae was most concentrated in the inner, electron-lucid layer. Immunogold stained preparations of C. albicans from vaginal smears of infected animals also showed intense localization of the MP60 in the inner cell wall, plasma membrane. However, immunogold label was also intense at the cell surface in these samples, mostly in the area of close adherence with the keratinocytes of the vaginal epithelia. These observations indicate that MP60 is expressed both in vitro and in vivo, but to a different degree in the different cell wall layers.

Published
1998
Full Text
View/download PDF

34. [Untitled]

Author

De Bernardis F, Giuseppe Arancia, G Pellegrini, Antonio Cassone, Annarita Stringaro, and Pasqualina Crateri

Subjects
Hypha, Veterinary (miscellaneous), Hyphal tip, Biology, biology.organism_classification, Applied Microbiology and Biotechnology, Microbiology, Corpus albicans, Cell wall, Polyclonal antibodies, Ultrastructure, biology.protein, Secretion, Candida albicans, Agronomy and Crop Science
Abstract

Detection and ultrastructural localization of aspartyl proteinase (Sap) in Candida albicans experimentally infecting rat vagina were studied. Two Sap-positive (Sap+) and one Sap-negative (Sap-) strains of the fungus, endowed with high and low experimental vaginopathic potential, respectively, were used. Both Sap+ strains produced consistent Sap levels in the rat vagina, while the Sap- strain did not produce any measurable Sap. Electron microscopy of thin sections of chemically-fixed vaginal scrapings showed clear evidence of hyphae of proteolitic strains of C. albicans invading the keratinized epithelial cell layer of the vagina. The fungal cells exhibited a pronounced fibrillar layer on the cell wall with a marked intermixing of fungal and vaginal materials especially pronunced at the hyphal tip. Post-embedding immunogold techniques with the use of anti-Sap polyclonal and the specifically generated monoclonal antibody GF1 showed that Sap was essentially localized in the cell wall of C. albicans early during infection, in a cytological pattern mirroring Sap localization in C. albicans cells grown in Sap-inductive media in vitro. In summary, the data offer a new biochemical and ultrastructural evidence that Sap is actively secreted during experimental rat vaginitis by C. albicans. Cell wall localization of Sap is probably inherent to this active secretion process.

Published
1997
Full Text
View/download PDF

35. Gravitational lens models based on Submillimeter Array Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.-selected strongly lensed sub-millimeter galaxies at z > 1.5

Author

Bussmann, R. S., Pérez fournon, I., Amber, S., Calanog, J., Gurwell, M. A., Dannerbauer, H., De Bernardis, F., Fu, H., Harris, A. I., Krips, M., Lapi, Andrea, Maiolino, R., Omont, A., Riechers, D., Wardlow, J., Baker, A. J., Birkinshaw, M., Bock, J., Bourne, N., Clements, D. L., Cooray, A., De Zotti, Gianfranco, Dunne, L., Dye, S., Eales, S., Farrah, D., Gavazzi, R., González Nuevo, J., Hopwood, R., Ibar, E., Ivison, R. J., Laporte, N., Maddox, S., Martínez navajas, P., Michalowski, M., Negrello, Mattia, Oliver, S. J., Roseboom, I. G., Scott, D., Serjeant, S., Smith, A. J., Smith, M., Streblyanska, A., Valiante, E., Van Der Werf, P., Verma, A., Vieira, J. D., Wang, L., and Wilner, D.

Subjects
astro-ph.GA, Molecular, galaxies: fundamental parameters, Astrophysics::Cosmology and Extragalactic Astrophysics, Astronomy & Astrophysics, Atomic, Physical Chemistry, halos [galaxies], galaxies: evolution, galaxies: high-redshift, Particle and Plasma Physics, Settore FIS/05 - Astronomia e Astrofisica, strong [gravitational lensing], astro-ph.CO, fundamental parameters [galaxies], Nuclear, Astrophysics::Galaxy Astrophysics, evolution [galaxies], high-redshift [galaxies], Astronomical and Space Sciences, Physical Chemistry (incl. Structural)
Abstract

Strong gravitational lenses are now being routinely discovered in wide-field surveys at (sub-)millimeter wavelengths. We present Submillimeter Array (SMA) high-spatial resolution imaging and Gemini-South and Multiple Mirror Telescope optical spectroscopy of strong lens candidates discovered in the two widest extragalactic surveys conducted by the Herschel Space Observatory: the Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) and the Herschel Multi-tiered Extragalactic Survey (HerMES). From a sample of 30 Herschel sources with S 500 > 100 mJy, 21 are strongly lensed (i.e., multiply imaged), 4 are moderately lensed (i.e., singly imaged), and the remainder require additional data to determine their lensing status. We apply a visibility-plane lens modeling technique to the SMA data to recover information about the masses of the lenses as well as the intrinsic (i.e., unlensed) sizes (r half) and far-infrared luminosities (L FIR) of the lensed submillimeter galaxies (SMGs). The sample of lenses comprises primarily isolated massive galaxies, but includes some groups and clusters as well. Several of the lenses are located at z lens > 0.7, a redshift regime that is inaccessible to lens searches based on Sloan Digital Sky Survey spectroscopy. The lensed SMGs are amplified by factors that are significantly below statistical model predictions given the 500 μm flux densities of our sample. We speculate that this may reflect a deficiency in our understanding of the intrinsic sizes and luminosities of the brightest SMGs. The lensed SMGs span nearly one decade in L FIR (median L FIR = 7.9 × 10 12 L ) and two decades in FIR luminosity surface density (median ΣFIR = 6.0 × 1011 L kpc-2). The strong lenses in this sample and others identified via (sub-)mm surveys will provide a wealth of information regarding the astrophysics of galaxy formation and evolution over a wide range in redshift. © 2013. The American Astronomical Society. All rights reserved..

Published
2013
Full Text
View/download PDF

37. Erratum: 'HerMES: ALMA Imaging of Herschel-selected Dusty Star-forming Galaxies' (2015, ApJ, 812, 43)

Author

Bussmann, R. S., Riechers, D., Fialkov, A., Scudder, J., Hayward, C. C., Cowley, W. I., Bock, J., Calanog, J., Chapman, S. C., Cooray, A., De Bernardis, F., Farrah, D., Fu, Hai, Gavazzi, R., Hopwood, R., Ivison, R. J., Jarvis, M., Lacey, C., Loeb, A., Oliver, S. J., Pérez-Fournon, I., Rigopoulou, D., Roseboom, I. G., Scott, Douglas, Smith, A. J., Vieira, J. D., Wang, L., Wardlow, J., Bussmann, R. S., Riechers, D., Fialkov, A., Scudder, J., Hayward, C. C., Cowley, W. I., Bock, J., Calanog, J., Chapman, S. C., Cooray, A., De Bernardis, F., Farrah, D., Fu, Hai, Gavazzi, R., Hopwood, R., Ivison, R. J., Jarvis, M., Lacey, C., Loeb, A., Oliver, S. J., Pérez-Fournon, I., Rigopoulou, D., Roseboom, I. G., Scott, Douglas, Smith, A. J., Vieira, J. D., Wang, L., and Wardlow, J.

Abstract

Not Available Herschel is an ESA space observatory with science instruments provided by European-led Principal Investigator consortia and with important participation from NASA.

Published
2015

38. Erratum::'HERMES: ALMA IMAGING OF HERSCHEL-SELECTED DUSTY STAR-FORMING GALAXIES' (vol 812, pg 43, 2015)

Author

Bussmann, R. S., Riechers, D., Fialkov, A., Scudder, J., Hayward, C. C., Cowley, W. I., Bock, J., Calanog, J., Chapman, S. C., Cooray, A., De Bernardis, F., Farrah, D., Fu, Hai, Gavazzi, R., Hopwood, R., Ivison, R. J., Jarvis, M., Lacey, C., Loeb, A., Oliver, S. J., Perez-Fournon, I., Rigopoulou, D., Roseboom, I. G., Scott, Douglas, Smith, A. J., Vieira, J. D., Wang, L., Wardlow, J., Bussmann, R. S., Riechers, D., Fialkov, A., Scudder, J., Hayward, C. C., Cowley, W. I., Bock, J., Calanog, J., Chapman, S. C., Cooray, A., De Bernardis, F., Farrah, D., Fu, Hai, Gavazzi, R., Hopwood, R., Ivison, R. J., Jarvis, M., Lacey, C., Loeb, A., Oliver, S. J., Perez-Fournon, I., Rigopoulou, D., Roseboom, I. G., Scott, Douglas, Smith, A. J., Vieira, J. D., Wang, L., and Wardlow, J.

Published
2015

39. HerMES: ALMA IMAGING OFHERSCHEL-SELECTED DUSTY STAR-FORMING GALAXIES

Author

Bussmann, R. S., primary, Riechers, D., additional, Fialkov, A., additional, Scudder, J., additional, Hayward, C. C., additional, Cowley, W. I., additional, Bock, J., additional, Calanog, J., additional, Chapman, S. C., additional, Cooray, A., additional, De Bernardis, F., additional, Farrah, D., additional, Fu, Hai, additional, Gavazzi, R., additional, Hopwood, R., additional, Ivison, R. J., additional, Jarvis, M., additional, Lacey, C., additional, Loeb, A., additional, Oliver, S. J., additional, Pérez-Fournon, I., additional, Rigopoulou, D., additional, Roseboom, I. G., additional, Scott, Douglas, additional, Smith, A. J., additional, Vieira, J. D., additional, Wang, L., additional, and Wardlow, J., additional

Published
2015
Full Text
View/download PDF

40. The Atacama Cosmology Telescope: measuring radio galaxy bias through cross-correlation with lensing

Author

Allison, R., primary, Lindsay, S. N., additional, Sherwin, B. D., additional, de Bernardis, F., additional, Bond, J. R., additional, Calabrese, E., additional, Devlin, M. J., additional, Dunkley, J., additional, Gallardo, P., additional, Henderson, S., additional, Hincks, A. D., additional, Hlozek, R., additional, Jarvis, M., additional, Kosowsky, A., additional, Louis, T., additional, Madhavacheril, M., additional, McMahon, J., additional, Moodley, K., additional, Naess, S., additional, Newburgh, L., additional, Niemack, M. D., additional, Page, L. A., additional, Partridge, B., additional, Sehgal, N., additional, Spergel, D. N., additional, Staggs, S. T., additional, van Engelen, A., additional, and Wollack, E. J., additional

Published
2015
Full Text
View/download PDF

44. HerMES: Candidate high-redshift galaxies discovered with Herschel/Spire

Author

Dowell, C., Conley, A., Glenn, J., Arumugam, V., Asboth, V., Aussel, H., Bertoldi, F., Béthermin, M., Bock, J., Boselli, A., Bridge, C., Buat, V., Burgarella, D., Cabrera-Lavers, A., Casey, C., Chapman, S., Clements, D., Conversi, L., Cooray, A., Dannerbauer, H., De Bernardis, F., Ellsworth-Bowers, T., Farrah, D., Franceschini, A., Griffin, M., Gurwell, M., Halpern, M., Hatziminaoglou, E., Heinis, S., Ibar, E., Ivison, R., Laporte, N., Marchetti, L., Martínez-Navajas, P., Marsden, G., Morrison, G., Nguyen, H., O'Halloran, B., Oliver, S., Omont, A., Page, M., Papageorgiou, A., Pearson, C., Petitpas, G., Pérez-Fournon, I., Pohlen, M., Riechers, D., Rigopoulou, D., Roseboom, I., Rowan-Robinson, M., Sayers, J., Schulz, B., Scott, D., Seymour, Nick, Shupe, D., Smith, A., Streblyanska, A., Symeonidis, M., Vaccari, M., Valtchanov, I., Vieira, J., Viero, M., Wang, L., Wardlow, J., Xu, C., Zemcov, M., Dowell, C., Conley, A., Glenn, J., Arumugam, V., Asboth, V., Aussel, H., Bertoldi, F., Béthermin, M., Bock, J., Boselli, A., Bridge, C., Buat, V., Burgarella, D., Cabrera-Lavers, A., Casey, C., Chapman, S., Clements, D., Conversi, L., Cooray, A., Dannerbauer, H., De Bernardis, F., Ellsworth-Bowers, T., Farrah, D., Franceschini, A., Griffin, M., Gurwell, M., Halpern, M., Hatziminaoglou, E., Heinis, S., Ibar, E., Ivison, R., Laporte, N., Marchetti, L., Martínez-Navajas, P., Marsden, G., Morrison, G., Nguyen, H., O'Halloran, B., Oliver, S., Omont, A., Page, M., Papageorgiou, A., Pearson, C., Petitpas, G., Pérez-Fournon, I., Pohlen, M., Riechers, D., Rigopoulou, D., Roseboom, I., Rowan-Robinson, M., Sayers, J., Schulz, B., Scott, D., Seymour, Nick, Shupe, D., Smith, A., Streblyanska, A., Symeonidis, M., Vaccari, M., Valtchanov, I., Vieira, J., Viero, M., Wang, L., Wardlow, J., Xu, C., and Zemcov, M.

Abstract

We present a method for selecting z > 4 dusty, star-forming galaxies (DSFGs) using Herschel/Spectral and Photometric Imaging Receiver 250/350/500 μm flux densities to search for red sources. We apply this method to 21 deg2 of data from the HerMES survey to produce a catalog of 38 high-z candidates. Follow-up of the first five of these sources confirms that this method is efficient at selecting high-z DSFGs, with 4/5 at z = 4.3-6.3 (and the remaining source at z = 3.4), and that they are some of the most luminous dusty sources known. Comparison with previous DSFG samples, mostly selected at longer wavelengths (e.g., 850 μm) and in single-band surveys, shows that our method is much more efficient at selecting high-z DSFGs, in the sense that a much larger fraction are at z > 3. Correcting for the selection completeness and purity, we find that the number of bright (S 500 μm ≥ 30 mJy), red Herschel sources is 3.3 ± 0.8 deg–2. This is much higher than the number predicted by current models, suggesting that the DSFG population extends to higher redshifts than previously believed. If the shape of the luminosity function for high-z DSFGs is similar to that at z ~ 2, rest-frame UV based studies may be missing a significant component of the star formation density at z = 4-6, even after correction for extinction.

Published
2014

45. HerMES: candidate high-redshift galaxies discovered with Herschel/SPIRE

Author

Dowell, C. D., Conley, A., Glenn, J., Arumugam, V., Asboth, V., Aussel, H., Bertoldi, F., Bethermin, M., Bock, J., Boselli, A., Bridge, C. R., Buat, V., Burgarella, D., Cabrera-Lavers, A., Casey, C. M., Chapman, S. C., Clements, D. L., Conversi, L., Cooray, A., Dannerbauer, H., De Bernardis, F., Ellsworth-Bowers, T. P., Farrah, D., Franceschini, A., Griffin, M., Gurwell, M. A., Halpern, M., Hatziminaoglou, E., Heinis, S., Ibar, E., Ivison, R. J., Laporte, N., Marchetti, L., Martinez-Navajas, P., Marsden, G., Morrison, G. E., Nguyen, H. T., O'Halloran, B., Oliver, S. J., Omont, A., Page, M. J., Papageorgiou, A., Pearson, C. P., Petitpas, G., Perez-Fournon, I., Pohlen, M., Riechers, D. A., Rigopoulou, D., Roseboom, I. G., Rowan-Robinson, M., Sayers, J., Schulz, B., Scott, D., Seymour, N., Shupe, D. L., Smith, A. J., Streblyanska, A., Symeonidis, M., Vaccari, M., Valtchanov, I., Vieira, J. D., Viero, M., Wang, L., Wardlow, J., Xu, C. K., Zemcov, M., Dowell, C. D., Conley, A., Glenn, J., Arumugam, V., Asboth, V., Aussel, H., Bertoldi, F., Bethermin, M., Bock, J., Boselli, A., Bridge, C. R., Buat, V., Burgarella, D., Cabrera-Lavers, A., Casey, C. M., Chapman, S. C., Clements, D. L., Conversi, L., Cooray, A., Dannerbauer, H., De Bernardis, F., Ellsworth-Bowers, T. P., Farrah, D., Franceschini, A., Griffin, M., Gurwell, M. A., Halpern, M., Hatziminaoglou, E., Heinis, S., Ibar, E., Ivison, R. J., Laporte, N., Marchetti, L., Martinez-Navajas, P., Marsden, G., Morrison, G. E., Nguyen, H. T., O'Halloran, B., Oliver, S. J., Omont, A., Page, M. J., Papageorgiou, A., Pearson, C. P., Petitpas, G., Perez-Fournon, I., Pohlen, M., Riechers, D. A., Rigopoulou, D., Roseboom, I. G., Rowan-Robinson, M., Sayers, J., Schulz, B., Scott, D., Seymour, N., Shupe, D. L., Smith, A. J., Streblyanska, A., Symeonidis, M., Vaccari, M., Valtchanov, I., Vieira, J. D., Viero, M., Wang, L., Wardlow, J., Xu, C. K., and Zemcov, M.

Abstract

We present a method for selecting z > 4 dusty, star-forming galaxies (DSFGs) using Herschel/Spectral and Photometric Imaging Receiver 250/350/500 mu m flux densities to search for red sources. We apply this method to 21 deg(2) of data from the HerMES survey to produce a catalog of 38 high-z candidates. Follow-up of the first five of these sources confirms that this method is efficient at selecting high-z DSFGs, with 4/5 at z = 4.3-6.3 (and the remaining source at z = 3.4), and that they are some of the most luminous dusty sources known. Comparison with previous DSFG samples, mostly selected at longer wavelengths (e. g., 850 mu m) and in single-band surveys, shows that our method is much more efficient at selecting high-z DSFGs, in the sense that a much larger fraction are at z > 3. Correcting for the selection completeness and purity, we find that the number of bright (S-500 (mu m) >= 30 mJy), red Herschel sources is 3.3 +/- 0.8 deg(-2). This is much higher than the number predicted by current models, suggesting that the DSFG population extends to higher redshifts than previously believed. If the shape of the luminosity function for high-z DSFGs is similar to that at z similar to 2, rest-frame UV based studies may be missing a significant component of the star formation density at z = 4-6, even after correction for extinction.

Published
2014
Full Text
View/download PDF

46. HerMES: candidate high-redshift galaxies discovered with Herschel/SPIRE

Author

Physics, Dowell, C. D., Conley, A., Glenn, J., Arumugam, V., Asboth, V., Aussel, H., Bertoldi, F., Bethermin, M., Bock, J., Boselli, A., Bridge, C. R., Buat, V., Burgarella, D., Cabrera-Lavers, A., Casey, C. M., Chapman, S. C., Clements, D. L., Conversi, L., Cooray, A., Dannerbauer, H., De Bernardis, F., Ellsworth-Bowers, T. P., Farrah, D., Franceschini, A., Griffin, M., Gurwell, M. A., Halpern, M., Hatziminaoglou, E., Heinis, S., Ibar, E., Ivison, R. J., Laporte, N., Marchetti, L., Martinez-Navajas, P., Marsden, G., Morrison, G. E., Nguyen, H. T., O'Halloran, B., Oliver, S. J., Omont, A., Page, M. J., Papageorgiou, A., Pearson, C. P., Petitpas, G., Perez-Fournon, I., Pohlen, M., Riechers, D. A., Rigopoulou, D., Roseboom, I. G., Rowan-Robinson, M., Sayers, J., Schulz, B., Scott, D., Seymour, N., Shupe, D. L., Smith, A. J., Streblyanska, A., Symeonidis, M., Vaccari, M., Valtchanov, I., Vieira, J. D., Viero, M., Wang, L., Wardlow, J., Xu, C. K., Zemcov, M., Physics, Dowell, C. D., Conley, A., Glenn, J., Arumugam, V., Asboth, V., Aussel, H., Bertoldi, F., Bethermin, M., Bock, J., Boselli, A., Bridge, C. R., Buat, V., Burgarella, D., Cabrera-Lavers, A., Casey, C. M., Chapman, S. C., Clements, D. L., Conversi, L., Cooray, A., Dannerbauer, H., De Bernardis, F., Ellsworth-Bowers, T. P., Farrah, D., Franceschini, A., Griffin, M., Gurwell, M. A., Halpern, M., Hatziminaoglou, E., Heinis, S., Ibar, E., Ivison, R. J., Laporte, N., Marchetti, L., Martinez-Navajas, P., Marsden, G., Morrison, G. E., Nguyen, H. T., O'Halloran, B., Oliver, S. J., Omont, A., Page, M. J., Papageorgiou, A., Pearson, C. P., Petitpas, G., Perez-Fournon, I., Pohlen, M., Riechers, D. A., Rigopoulou, D., Roseboom, I. G., Rowan-Robinson, M., Sayers, J., Schulz, B., Scott, D., Seymour, N., Shupe, D. L., Smith, A. J., Streblyanska, A., Symeonidis, M., Vaccari, M., Valtchanov, I., Vieira, J. D., Viero, M., Wang, L., Wardlow, J., Xu, C. K., and Zemcov, M.

Abstract

We present a method for selecting z > 4 dusty, star-forming galaxies (DSFGs) using Herschel/Spectral and Photometric Imaging Receiver 250/350/500 mu m flux densities to search for red sources. We apply this method to 21 deg(2) of data from the HerMES survey to produce a catalog of 38 high-z candidates. Follow-up of the first five of these sources confirms that this method is efficient at selecting high-z DSFGs, with 4/5 at z = 4.3-6.3 (and the remaining source at z = 3.4), and that they are some of the most luminous dusty sources known. Comparison with previous DSFG samples, mostly selected at longer wavelengths (e. g., 850 mu m) and in single-band surveys, shows that our method is much more efficient at selecting high-z DSFGs, in the sense that a much larger fraction are at z > 3. Correcting for the selection completeness and purity, we find that the number of bright (S-500 (mu m) >= 30 mJy), red Herschel sources is 3.3 +/- 0.8 deg(-2). This is much higher than the number predicted by current models, suggesting that the DSFG population extends to higher redshifts than previously believed. If the shape of the luminosity function for high-z DSFGs is similar to that at z similar to 2, rest-frame UV based studies may be missing a significant component of the star formation density at z = 4-6, even after correction for extinction.

Published
2014

47. Evaluation of efficacy, pharmacokinetics and tolerability of peptidomimetic aspartic proteinase inhibitors as cream formulation in experimental vaginal candidiasis

Author

De Bernardis, F, Arancia, Silvia, Tringali, Giuseppe, Greco, Maria Cristina, Ragazzoni, Enzo, Calugi, C, Trabocchi, A, Sandini, S, Graziani, S, Cauda, Roberto, Cassone, A, Guarna, A, Navarra, Pierluigi, Tringali, Giuseppe (ORCID:0000-0002-1030-9429), Cauda, Roberto (ORCID:0000-0002-1498-4229), Navarra, Pierluigi (ORCID:0000-0002-4424-650X), De Bernardis, F, Arancia, Silvia, Tringali, Giuseppe, Greco, Maria Cristina, Ragazzoni, Enzo, Calugi, C, Trabocchi, A, Sandini, S, Graziani, S, Cauda, Roberto, Cassone, A, Guarna, A, Navarra, Pierluigi, Tringali, Giuseppe (ORCID:0000-0002-1030-9429), Cauda, Roberto (ORCID:0000-0002-1498-4229), and Navarra, Pierluigi (ORCID:0000-0002-4424-650X)

Abstract

It has been previously shown that the treatment with the two protease inhibitors APG12 and APG19 confers protection in a rat model of mucosal candidiasis; in this study, we examined whether these peptidomimetic inhibitors are also effective as a cream formulation in reducing Candida albicans vaginal infection.

Published
2014

49. HerMES: Candidate gravitationally lensed galaxies and lensing statistics at submillimeter wavelengths

Author

Wardlow, J., Cooray, A., De Bernardis, F., Amblard, A., Arumugam, V., Aussel, H., Baker, A., Béthermin, M., Blundell, R., Bock, J., Boselli, A., Bridge, C., Buat, V., Burgarella, D., Bussmann, R., Cabrera-Lavers, A., Calanog, J., Carpenter, J., Casey, C., Castro-Rodríguez, N., Cava, A., Chanial, P., Chapin, E., Chapman, S., Clements, D., Conley, A., Cox, P., Dowell, C., Dye, S., Eales, S., Farrah, D., Ferrero, P., Franceschini, A., Frayer, D., Frazer, C., Fu, H., Gavazzi, R., Glenn, J., González Solares, E., Griffin, M., Gurwell, M., Harris, A., Hatziminaoglou, E., Hopwood, R., Hyde, A., Ibar, E., Ivison, R., Kim, S., Lagache, G., Levenson, L., Marchetti, L., Marsden, G., Martinez-Navajas, P., Negrello, M., Neri, R., Nguyen, H., O'Halloran, B., Oliver, S., Omont, A., Page, M., Panuzzo, P., Papageorgiou, A., Pearson, C., Pérez-Fournon, I., Pohlen, M., Riechers, D., Rigopoulou, D., Roseboom, I., Rowan-Robinson, M., Schulz, B., Scott, D., Scoville, N., Seymour, Nick, Shupe, D., Smith, A., Streblyanska, A., Strom, A., Symeonidis, M., Trichas, M., Vaccari, M., Vieira, J., Viero, M., Wang, L., Xu, C., Yan, L., Zemcov, M., Wardlow, J., Cooray, A., De Bernardis, F., Amblard, A., Arumugam, V., Aussel, H., Baker, A., Béthermin, M., Blundell, R., Bock, J., Boselli, A., Bridge, C., Buat, V., Burgarella, D., Bussmann, R., Cabrera-Lavers, A., Calanog, J., Carpenter, J., Casey, C., Castro-Rodríguez, N., Cava, A., Chanial, P., Chapin, E., Chapman, S., Clements, D., Conley, A., Cox, P., Dowell, C., Dye, S., Eales, S., Farrah, D., Ferrero, P., Franceschini, A., Frayer, D., Frazer, C., Fu, H., Gavazzi, R., Glenn, J., González Solares, E., Griffin, M., Gurwell, M., Harris, A., Hatziminaoglou, E., Hopwood, R., Hyde, A., Ibar, E., Ivison, R., Kim, S., Lagache, G., Levenson, L., Marchetti, L., Marsden, G., Martinez-Navajas, P., Negrello, M., Neri, R., Nguyen, H., O'Halloran, B., Oliver, S., Omont, A., Page, M., Panuzzo, P., Papageorgiou, A., Pearson, C., Pérez-Fournon, I., Pohlen, M., Riechers, D., Rigopoulou, D., Roseboom, I., Rowan-Robinson, M., Schulz, B., Scott, D., Scoville, N., Seymour, Nick, Shupe, D., Smith, A., Streblyanska, A., Strom, A., Symeonidis, M., Trichas, M., Vaccari, M., Vieira, J., Viero, M., Wang, L., Xu, C., Yan, L., and Zemcov, M.

Abstract

We present a list of 13 candidate gravitationally lensed submillimeter galaxies (SMGs) from 95 deg2 of the Herschel Multi-tiered Extragalactic Survey, a surface density of 0.14 ± 0.04 deg–2. The selected sources have 500 μm flux densities (S 500) greater than 100 mJy. Gravitational lensing is confirmed by follow-up observations in 9 of the 13 systems (70%), and the lensing status of the four remaining sources is undetermined. We also present a supplementary sample of 29 (0.31 ± 0.06 deg–2) gravitationally lensed SMG candidates with S 500 = 80-100 mJy, which are expected to contain a higher fraction of interlopers than the primary candidates. The number counts of the candidate lensed galaxies are consistent with a simple statistical model of the lensing rate, which uses a foreground matter distribution, the intrinsic SMG number counts, and an assumed SMG redshift distribution. The model predicts that 32%-74% of our S 500 ≥ 100 mJy candidates are strongly gravitationally lensed (μ ≥ 2), with the brightest sources being the most robust; this is consistent with the observational data. Our statistical model also predicts that, on average, lensed galaxies with S 500 = 100 mJy are magnified by factors of ~9, with apparently brighter galaxies having progressively higher average magnification, due to the shape of the intrinsic number counts. 65% of the sources are expected to have intrinsic 500 μm flux densities less than 30 mJy. Thus, samples of strongly gravitationally lensed SMGs, such as those presented here, probe below the nominal Herschel detection limit at 500 μm. They are good targets for the detailed study of the physical conditions in distant dusty, star-forming galaxies, due to the lensing magnification, which can lead to spatial resolutions of ~0farcs01 in the source plane.

Published
2013

50. Gravitational lens models based on submillimeter array imaging of Herschel-selected strongly lensed sub-millimeter galaxies at z > 1.5

Author

Bussmann, R. S., Perez-Fournon, I., Amber, S., Calanog, J. A., Gurwell, M. A., Dannerbauer, H., De Bernardis, F., Fu, H., Harris, A. I., Krips, M., Lapi, A., Maiolino, R., Omont, A., Riechers, D. A., Wardlow, J., Baker, A. J., Birkinshaw, M., Bock, J., Bourne, N., Clements, D. L., Cooray, A., De Zotti, G., Dunne, L., Dye, S., Eales, S., Farrah, D., Gavazzi, R., Nuevo, J. G., Hopwood, R., Ibar, E., Ivison, R. J., Laporte, N., Maddox, S., Martinez-Navajas, P., Michalowski, M. J., Negrello, M., Oliver, S. J., Roseboom, I. G., Scott, D., Serjeant, S., Smith, A. J., Smith, M., Streblyanska, A., Valiante, E., van der Werf, P., Verma, A., Vieira, J. D., Wang, L., Wilner, D., Bussmann, R. S., Perez-Fournon, I., Amber, S., Calanog, J. A., Gurwell, M. A., Dannerbauer, H., De Bernardis, F., Fu, H., Harris, A. I., Krips, M., Lapi, A., Maiolino, R., Omont, A., Riechers, D. A., Wardlow, J., Baker, A. J., Birkinshaw, M., Bock, J., Bourne, N., Clements, D. L., Cooray, A., De Zotti, G., Dunne, L., Dye, S., Eales, S., Farrah, D., Gavazzi, R., Nuevo, J. G., Hopwood, R., Ibar, E., Ivison, R. J., Laporte, N., Maddox, S., Martinez-Navajas, P., Michalowski, M. J., Negrello, M., Oliver, S. J., Roseboom, I. G., Scott, D., Serjeant, S., Smith, A. J., Smith, M., Streblyanska, A., Valiante, E., van der Werf, P., Verma, A., Vieira, J. D., Wang, L., and Wilner, D.

Abstract

Strong gravitational lenses are now being routinely discovered in wide-field surveys at (sub-)millimeter wavelengths. We present Submillimeter Array (SMA) high-spatial resolution imaging and Gemini-South and Multiple Mirror Telescope optical spectroscopy of strong lens candidates discovered in the two widest extragalactic surveys conducted by the Herschel Space Observatory: the Herschel-Astrophysical Terahertz Large Area Survey (H-ATLAS) and the Herschel Multi-tiered Extragalactic Survey (HerMES). From a sample of 30 Herschel sources with S-500 > 100 mJy, 21 are strongly lensed (i.e., multiply imaged), 4 are moderately lensed (i.e., singly imaged), and the remainder require additional data to determine their lensing status. We apply a visibility-plane lens modeling technique to the SMA data to recover information about the masses of the lenses as well as the intrinsic (i.e., unlensed) sizes (r(half)) and far-infrared luminosities (L-FIR) of the lensed submillimeter galaxies (SMGs). The sample of lenses comprises primarily isolated massive galaxies, but includes some groups and clusters as well. Several of the lenses are located at z(lens) > 0.7, a redshift regime that is inaccessible to lens searches based on Sloan Digital Sky Survey spectroscopy. The lensed SMGs are amplified by factors that are significantly below statistical model predictions given the 500 mu m flux densities of our sample. We speculate that this may reflect a deficiency in our understanding of the intrinsic sizes and luminosities of the brightest SMGs. The lensed SMGs span nearly one decade in L-FIR (median L-FIR = 7.9 x 10(12) L-circle dot) and two decades in FIR luminosity surface density (median Sigma(FIR) = 6.0 x 10(11) L-circle dot kpc(-2)). The strong lenses in this sample and others identified via (sub-) mm surveys will provide a wealth of information regarding the astrophysics of galaxy formation and evolution over a wide range in redshift.

Published
2013
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results