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1. COSMOS2020: a panchromatic view of the universe to z 10 from two complementary catalogs

Author

J. R. Weaver, O. B. Kauffmann, O. Ilbert, H. J. McCracken, A. Moneti, S. Toft, G. Brammer, M. Shuntov, I. Davidzon, B. C. Hsieh, C. Laigle, A. Anastasiou, C. K. Jespersen, J. Vinther, P. Capak, C. M. Casey, C. J. R. McPartland, B. Milvang-Jensen, B. Mobasher, D. B. Sanders, L. Zalesky, S. Arnouts, H. Aussel, J. S. Dunlop, A. Faisst, M. Franx, L. J. Furtak, J. P. U. Fynbo, K. M. L. Gould, T. R. Greve, S. Gwyn, J. S. Kartaltepe, D. Kashino, A. M. Koekemoer, V. Kokorev, O. Le Fèvre, S. Lilly, D. Masters, G. Magdis, V. Mehta, Y. Peng, D. A. Riechers, M. Salvato, M. Sawicki, C. Scarlata, N. Scoville, R. Shirley, J. D. Silverman, A. Sneppen, V. Smolc̆ić, C. Steinhardt, D. Stern, M. Tanaka, Y. Taniguchi, H. I. Teplitz, M. Vaccari, W.-H. Wang, G. Zamorani, Laboratoire d'Astrophysique de Marseille (LAM), Aix Marseille Université (AMU)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales [Toulouse] (CNES)-Centre National de la Recherche Scientifique (CNRS), Institut d'Astrophysique de Paris (IAP), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Weaver, JR [0000-0003-1614-196X], Kauffmann, OB [0000-0001-5283-4662], Ilbert, O [0000-0002-7303-4397], McCracken, HJ [0000-0002-9489-7765], Toft, S [0000-0003-3631-7176], Brammer, G [0000-0003-2680-005X], Shuntov, M [0000-0002-7087-0701], Davidzon, I [0000-0002-2951-7519], Hsieh, BC [0000-0001-5615-4904], Anastasiou, A [0000-0001-8558-7709], Jespersen, CK [0000-0002-8896-6496], Vinther, J [0000-0002-4418-752X], Capak, P [0000-0003-3578-6843], Casey, CM [0000-0002-0930-6466], McPartland, CJR [0000-0003-0639-025X], Milvang-Jensen, B [0000-0002-2281-2785], Sanders, DB [0000-0002-1233-9998], Zalesky, L [0000-0001-5680-2326], Faisst, A [0000-0002-9382-9832], Franx, M [0000-0002-8871-3026], Furtak, LJ [0000-0001-6278-032X], Fynbo, JPU [0000-0002-8149-8298], Gould, KML [0000-0003-4196-5960], Greve, TR [0000-0002-2554-1837], Gwyn, S [0000-0001-8221-8406], Kartaltepe, JS [0000-0001-9187-3605], Kashino, D [0000-0001-9044-1747], Koekemoer, AM [0000-0002-6610-2048], Kokorev, V [0000-0002-5588-9156], Le Fèvre, O [0000-0001-5891-2596], Lilly, S [0000-0002-6423-3597], Masters, D [0000-0001-5382-6138], Magdis, G [0000-0002-4872-2294], Mehta, V [0000-0001-7166-6035], Riechers, DA [0000-0001-9585-1462], Salvato, M [0000-0001-7116-9303], Sawicki, M [0000-0002-7712-7857], Scarlata, C [0000-0002-9136-8876], Scoville, N [0000-0002-0438-3323], Shirley, R [0000-0002-1114-0135], Sneppen, A [0000-0002-5460-6126], Smolc̆ić, V [0000-0002-3893-8614], Steinhardt, C [0000-0003-3780-6801], Stern, D [0000-0003-2686-9241], Tanaka, M [0000-0002-5011-5178], Taniguchi, Y [0000-0003-2247-3741], Teplitz, HI [0000-0002-7064-5424], Vaccari, M [0000-0002-6748-0577], Wang, W-H [0000-0003-2588-1265], Zamorani, G [0000-0002-2318-301X], and Apollo - University of Cambridge Repository

Subjects
Cosmology and Nongalactic Astrophysics (astro-ph.CO), Astrophysics - astrophysics of galaxies, Astrophysics - cosmology and nongalactic astrophysics, FOS: Physical sciences, 5109 Space Sciences, Astrophysics::Cosmology and Extragalactic Astrophysics, Galaxies and Cosmology, Universe, panchromatic view, Astrophysics::Solar and Stellar Astrophysics, Astrophysics::Galaxy Astrophysics, [SDU.ASTR]Sciences of the Universe [physics]/Astrophysics [astro-ph], Astrophysics::Instrumentation and Methods for Astrophysics, Astronomy and Astrophysics, Space and Planetary Science, [SDU]Sciences of the Universe [physics], Astrophysics of Galaxies (astro-ph.GA), Astrophysics::Earth and Planetary Astrophysics, 51 Physical Sciences
Abstract

The Cosmic Evolution Survey (COSMOS) has become a cornerstone of extragalactic astronomy. Since the last public catalog in 2015, a wealth of new imaging and spectroscopic data has been collected in the COSMOS field. This paper describes the collection, processing, and analysis of this new imaging data to produce a new reference photometric redshift catalog. Source detection and multi-wavelength photometry is performed for 1.7 million sources across the $2\,\mathrm{deg}^{2}$ of the COSMOS field, $\sim$966,000 of which are measured with all available broad-band data using both traditional aperture photometric methods and a new profile-fitting photometric extraction tool, The Farmer, which we have developed. A detailed comparison of the two resulting photometric catalogs is presented. Photometric redshifts are computed for all sources in each catalog utilizing two independent photometric redshift codes. Finally, a comparison is made between the performance of the photometric methodologies and of the redshift codes to demonstrate an exceptional degree of self-consistency in the resulting photometric redshifts. The $i, Comment: 39 pages, 21 figures, accepted for publication in The Astrophysical Journal Supplement Series. Production of IRAC mosaics are presented in Moneti et al. "Euclid Preparation: XVIII. Cosmic Dawn Survey. Spitzer observations of the Euclid deep fields and calibration fields" which has been posted simultaneously. Catalogs can be accessed online now at https://cosmos2020.calet.org

Published
2022
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2. New Constraints on the Molecular Gas in the Prototypical HyLIRGs BRI1202-0725 & BRI1335-0417

Author

Emmanuel Momjian, Richard G. McMahon, Kazuaki Ota, Fabian Walter, Dominik Riechers, Chris Carilli, G. C. Jones, Jeff Wagg, Roberto Decarli, Jones, GC [0000-0002-0267-9024], Carilli, CL [0000-0001-6647-3861], Momjian, E [0000-0003-3168-5922], Riechers, DA [0000-0001-9585-1462], Walter, F [0000-0003-4793-7880], Decarli, R [0000-0002-2662-8803], Ota, K [0000-0002-7675-5923], and Apollo - University of Cambridge Repository

Subjects
Physics, 010308 nuclear & particles physics, Library science, galaxies: starburst, Astronomy and Astrophysics, 01 natural sciences, Radio astronomy observatory, Astrophysics - Astrophysics of Galaxies, early universe, galaxies: high-redshift, Space and Planetary Science, cosmology: observations, 0103 physical sciences, galaxies: formation, galaxies: evolution, 010303 astronomy & astrophysics
Abstract

We present Karl G Jansky Very Large Array (VLA) observations of CO(2-1) line emission and rest-frame 250GHz continuum emission of the Hyper-Luminous IR Galaxies (HyLIRGs) BRI1202-0725 (z=4.69) and BRI1335-0417 (z=4.41), with an angular resolution as high as 0.15". Our low order CO observations delineate the cool molecular gas, the fuel for star formation in the systems, in unprecedented detail. For BRI1202-0725, line emission is seen from both extreme starburst galaxies: the quasar host and the optically obscured submm galaxy (SMG), in addition to one of the Lyman-alpha emitting galaxies in the group. Line emission from the SMG shows an east-west extension of about 0.6". For Lyalpha-2, the CO emission is detected at the same velocity as [CII] and [NII], indicating a total gas mass ~4.0*10^10 solar masses. The CO emission from BRI1335-0417 peaks at the nominal quasar position, with a prominent northern extension (~1", a possible tidal feature). The gas depletion timescales are ~10^7 years for the three HyLIRGs, consistent with extreme starbursts, while that of Lyalpha-2 may be consistent with main sequence galaxies. We interpret these sources as major star formation episodes in the formation of massive galaxies and supermassive black holes (SMBHs) via gas rich mergers in the early Universe., G. C. J. is grateful for support from NRAO through the Grote Reber Doctoral Fellowship Program. R. G. M. acknowledges the UK Science and Technology Facilities Council (STFC). K. O. acknowledges the Kavli Institute Fellowship at the Kavli Institute for Cosmology in the University of Cambridge supported by the Kavli Foundation. The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc. We thank all those involved in the VLA project for making these observations possible (project code 13A-012)., This is the author accepted manuscript. It is currently under an indefinite embargo pending publication by IOP Publishing.

Published
2016

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