1. The host galaxies of X-ray selected active galactic nuclei to z = 2.5: Structure, star formation, and their relationships from CANDELS and Herschel/PACS
- Author
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Maksym Bernyk, Anton M. Koekemoer, S. Avadhuta, Marie Martig, Roberto Maiolino, D. D. Kocevski, Olivia Telford, Jessica Herrington, Henry C. Ferguson, Norman A. Grogin, Eric F. Bell, Franz E. Bauer, Darren J. Croton, P. Wandro, Jennifer L. Donley, Reinhard Genzel, A. Bell, Javiera Guedes, Amber Straughn, Annalisa Pillepich, Dieter Lutz, David C. Koo, David J. Rosario, J. Kartaltepe, Erin M. O'Leary, Stijn Wuyts, Daniel H. McIntosh, Conor McPartland, Matt Hilton, Linda J. Tacconi, Avishai Dekel, James Mullaney, Robert Bassett, Jennifer M. Lotz, C. Tonini, C. Lani, Simon J. Mutch, D. Snyder, Elizabeth J. McGrath, Nimish P. Hathi, Gregory B. Poole, S. M. Faber, Jonathan R. Trump, Marc Rafelski, Paola Santini, Benjamin Magnelli, Philipp Lang, Paolo Cassata, Carolin Villforth, C. J. Conselice, Laura DeGroot, P. Popesso, A. van der Wel, Kamson Lai, W. N. Brandt, Mark Mozena, S. Berta, Alice Mortlock, Casey Papovich, David M. Alexander, Frederic Bournaud, Edmond Cheung, Michael Peth, Max-Planck-Institut für Extraterrestrische Physik (MPE), Astrophysique Interprétation Modélisation (AIM (UMR7158 / 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 Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), 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), University of St Andrews. School of Physics and Astronomy, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Aix Marseille Université (AMU)-Centre National d'Études Spatiales [Toulouse] (CNES), ITA, USA, GBR, FRA, DEU, AUS, CHL, ISR, and CHE
- Subjects
statistical [Methods] ,structure [Galaxies] ,active, galaxies: structure, galaxies: star formation, surveys, methods: statistical, X-rays: galaxies [galaxies] ,Astrophysics ,Surveys ,Galaxies: active ,Galaxies: star formation ,Galaxies: structure ,Methods: statistical ,X-rays: galaxies ,Astronomy and Astrophysics ,Space and Planetary Science ,Luminosity ,MERGER-AGN CONNECTION ,SUPERMASSIVE ,Bulge ,SPECTRAL ,QB Astronomy ,QC ,QB ,Physics ,COSMIC cancer database ,X-ray ,MASSIVE GALAXIES ,3rd-DAS ,galaxies [X-rays] ,GALAXIES ,ULTRALUMINOUS INFRARED GALAXIES ,Active galactic nucleus ,SIMILAR-TO 2 ,active [Galaxies] ,Astrophysics::High Energy Astrophysical Phenomena ,galaxies. [X-rays] ,FOS: Physical sciences ,Astrophysics::Cosmology and Extragalactic Astrophysics ,ENERGY-DISTRIBUTIONS ,star formation [Galaxies] ,DEEP FIELD-SOUTH ,EXTRAGALACTIC LEGACY SURVEY ,BLACK-HOLES ,Astrophysics::Galaxy Astrophysics ,Star formation ,Near-infrared spectroscopy ,Astrophysics - Astrophysics of Galaxies ,Galaxy ,QC Physics ,Physics and Astronomy ,Astrophysics of Galaxies (astro-ph.GA) ,DIGITAL SKY SURVEY ,HIGH-REDSHIFT ,[PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph] - Abstract
We study the relationship between the structure and star-formation rate (SFR) of X-ray selected low and moderate luminosity active galactic nuclei (AGNs) in the two Chandra Deep Fields, using Hubble Space Telescope imaging from the Cosmic Assembly Near Infrared Extragalactic Legacy Survey (CANDELS) and deep far-infrared maps from the PEP+GOODS-Herschel survey. We derive detailed distributions of structural parameters and FIR luminosities from carefully constructed control samples of galaxies, which we then compare to those of the AGNs. At z~1, AGNs show slightly diskier light profiles than massive inactive (non-AGN) galaxies, as well as modestly higher levels of gross galaxy disturbance (as measured by visual signatures of interactions and clumpy structure). In contrast, at z~2, AGNs show similar levels of galaxy disturbance as inactive galaxies, but display a red central light enhancement, which may arise due to a more pronounced bulge in AGN hosts or due to extinguished nuclear light. We undertake a number of tests of these alternatives, but our results do not strongly favour one interpretation over the other. The mean SFR and its distribution among AGNs and inactive galaxies are similar at z>1.5. At z1.5., 25 pages (double-column), 17 Figures, under review at A&A
- Published
- 2015