Year: 2018
Type: article
Abstract: This is the first in a series of papers examining the demographics of star-forming (SF) galaxies at 0.2 < z < 2.5 in CANDELS. We study 9100 galaxies from GOODS-S and UDS, having published values of redshifts, masses, star formation rates (SFRs), and dust attenuation (A V ) derived from UV–optical spectral energy distribution fitting. In agreement with previous works, we find that the UVJ colors of a galaxy are closely correlated with its specific star formation rate (SSFR) and A V . We define rotated UVJ coordinate axes, termed S SED and C SED, that are parallel and perpendicular to the SF sequence and derive a quantitative calibration that predicts SSFR from C SED with an accuracy of ∼0.2 dex. SFRs from UV–optical fitting and from UV+IR values based on Spitzer/MIPS 24 μm agree well overall, but systematic differences of order 0.2 dex exist at high and low redshifts. A novel plotting scheme conveys the evolution of multiple galaxy properties simultaneously, and dust growth, as well as star formation decline and quenching, exhibit “mass-accelerated evolution” (“downsizing”). A population of transition galaxies below the SF main sequence is identified. These objects are located between SF and quiescent galaxies in UVJ space, and have lower A V and smaller radii than galaxies on the main sequence. Their properties are consistent with their being in transit between the two regions. The relative numbers of quenched, transition, and SF galaxies are given as a function of mass and redshift.
Source: The Astrophysical Journal
Authors: Jerome J. Fang, S. M. Faber, David C. Koo, Aldo Rodríguez-Puebla, Yicheng Guo, Guillermo Barro, Peter Behroozi, Gabriel Brammer, Zhu Chen, Avishai Dekel, Henry C. Ferguson, Eric Gawiser, Mauro Giavalisco, Jeyhan Kartaltepe, Dale D. Kocevski, Anton M. Koekemoer, Elizabeth J. McGrath, Daniel McIntosh, Jeffrey A. Newman, Camilla Pacifici, Viraj Pandya, Pablo G. Pérez-González, Joel R. Primack, Brett Salmon, Jonathan R. Trump, Benjamin Weiner, S. P. Willner, Viviana Acquaviva, Tomas Dahlen, Steven L. Finkelstein, Kristian Finlator, Adriano Fontana, Audrey Galametz, Norman A. Grogin, Ruth Gruetzbauch, Seth Johnson, Bahram Mobasher, Casey J. Papovich, Janine Pforr, Mara Salvato, P. Santini, Arjen van der Wel, Tommy Wiklind, Stijn Wuyts
Institutions: University of California, Santa Cruz, Orange Coast College, Universidad Nacional Autónoma de México, University of the Pacific, University of Arizona, Space Telescope Science Institute, Shanghai Normal University, Hebrew University of Jerusalem, Rutgers, The State University of New Jersey, University of Massachusetts Amherst, Rochester Institute of Technology, Colby College, University of Missouri–Kansas City, University of Pittsburgh, Universidad Complutense de Madrid, University of Connecticut, Center for Astrophysics Harvard & Smithsonian, New York City College of Technology, The University of Texas at Austin, New Mexico State University, National Institute for Astrophysics, Max Planck Institute for Extraterrestrial Physics, University of Lisbon, University of California, Riverside, Texas A&M University, European Space Research and Technology Centre, Max Planck Society, Max Planck Institute for Astronomy, Catholic University of America
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
Funders: National Science Foundation, National Aeronautics and Space Administration, California Institute of Technology, University of Lethbridge, UK Space Agency, Space Telescope Science Institute, Imperial College London, University of Sussex, Cardiff University, Centre National d’Etudes Spatiales, Universidad Complutense de Madrid, Università degli Studi di Padova, KU Leuven, Centre National de la Recherche Scientifique, Bundesministerium für Verkehr, Innovation und Technologie, Max-Planck-Institut für Astronomie, Jet Propulsion Laboratory, University of California Observatories, Science and Technology Facilities Council, National Astronomical Observatories, Chinese Academy of Sciences
OpenAlex ID: W2765886468