Year: 2014
Type: article
Abstract: We present Keck-Adaptive Optics and Hubble Space Telescope high resolution near-infrared (IR) imaging for 500 μm bright candidate lensing systems identified by the Herschel Multi-tiered Extragalactic Survey and Herschel Astrophysical Terahertz Large Area Survey. Out of 87 candidates with near-IR imaging, 15 (∼17%) display clear near-IR lensing morphologies. We present near-IR lens models to reconstruct and recover basic rest-frame optical morphological properties of the background galaxies from 12 new systems. Sources with the largest near-IR magnification factors also tend to be the most compact, consistent with the size bias predicted from simulations and previous lensing models for submillimeter galaxies (SMGs). For four new sources that also have high-resolution submillimeter maps, we test for differential lensing between the stellar and dust components and find that the 880 μm magnification factor (μ 880 ) is ∼1.5 times higher than the near-IR magnification factor (μ NIR ), on average. We also find that the stellar emission is ∼2 times more extended in size than dust. The rest-frame optical properties of our sample of Herschel -selected lensed SMGs are consistent with those of unlensed SMGs, which suggests that the two populations are similar.
Source: The Astrophysical Journal
Authors: J. A. Calanog, Hai Fu, A. Cooray, J. Wardlow, B. Ma, S. Amber, A. J. Baker, M. Baes, J. Bock, N. Bourne, R. S. Bussmann, C. M. Casey, S. C. Chapman, D. L. Clements, A. Conley, H. Dannerbauer, G. De Zotti, L. Dunne, S. Dye, S. Eales, D. Farrah, C. Furlanetto, A. I. Harris, R. J. Ivison, S. Kim, S. J. Maddox, G. Magdis, H. Messias, M. J. Michałowski, M. Negrello, J. Nightingale, J. M. O'Bryan, S. J. Oliver, D. Riechers, D. Scott, S. Serjeant, J. Simpson, M. Smith, N. Timmons, C. Thacker, E. Valiante, J. D. Vieira
Institutions: University of California, Irvine, University of Iowa, California Institute of Technology, University of Copenhagen, The Open University, Rutgers, The State University of New Jersey, Ghent University, Jet Propulsion Laboratory, University of Nottingham, Cornell University, University of Cambridge, Imperial College London, University of Colorado Boulder, Centre National de la Recherche Scientifique, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, Astrophysique, Instrumentation et Modélisation, CEA Paris-Saclay, Université Paris Diderot, Scuola Internazionale Superiore di Studi Avanzati, Osservatorio Astronomico di Padova, National Institute for Astrophysics, Cardiff University, University of Sussex, Virginia Tech, University of Maryland, College Park, Royal Observatory, UK Astronomy Technology Centre, University of Edinburgh, University of Oxford, University of Lisbon, University of Concepción, University of British Columbia, Durham University
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, Smithsonian Institution, National Aeronautics and Space Administration, W. M. Keck Foundation, James S. McDonnell Foundation, Gordon and Betty Moore Foundation, Kenneth T. and Eileen L. Norris Foundation, California Institute of Technology, University of Chicago, Aspen Center for Physics, UK Space Agency, Space Telescope Science Institute, Imperial College London, National Research Foundation, Danmarks Grundforskningsfond, Academia Sinica, Centre National d’Etudes Spatiales, Centre National de la Recherche Scientifique, Smithsonian Astrophysical Observatory, Science and Technology Facilities Council, Key Programme, National Astronomical Observatories, Chinese Academy of Sciences
Awards: Astronomy & Astrophysics at Nottingham, G2391979939, Nottingham Astronomy Rolling Grant 2011 - 2016, G2639239629, G4081850257, G433322167, G4357913612, Astronomy and Planetary Sciences at the Open University (APSOU), G4518818167, Programs on Critical Problems in Physics, Astrophysics and Biophysics at the Aspen Center for Physics, Astrophysical and Cosmological Information Content in Anisotropies of the Near and Far-IR Background and Intensity Fluctuations of Atomic and Molecular Lines, G58316358, G6273510985, G6506395156, Unveiling the Hidden Universe - From the First Galaxies to Brown Dwarfs, G767601387, G8210229802, Imperial College Astrophysics PATT Linked Grant, G8896167186
OpenAlex ID: W2045767679