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Stellar mass functions of galaxies at 4 < z < 7 from an IRAC-selected sample in COSMOS/UltraVISTA: Limits on the abundance of very massive galaxies

Journal Article · · Astrophysical Journal
 [1];  [2]; ; ;  [3];  [4];  [5]; ;  [6];  [7]
  1. Physics and Astronomy Department, University of Missouri, Columbia, MO 65211 (United States)
  2. Physics and Astronomy Department, Tufts University, Robinson Hall, Room 257, Medford, MA 02155 (United States)
  3. Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden (Netherlands)
  4. Space Telescope Science Institute, Baltimore, MD 21218 (United States)
  5. SUPA—Scottish Universities Physics Alliance—Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ (United Kingdom)
  6. Dark Cosmology Centre, Niels Bohr Institute, Copenhagen University, Juliane Maries Vej 30, DK-2100 Copenhagen O (Denmark)
  7. Department of Astronomy, Yale University, New Haven, CT 06511 (United States)
We build a Spitzer IRAC-complete catalog of objects complementing the K{sub s}-band selected UltraVISTA catalog with objects detected in IRAC only. To identify massive (log(M{sub ∗}/M{sub ⊙})>11) galaxies at 44 massive galaxies by 83%, implying a rapid growth of massive galaxies in the first 1.5 Gyr of cosmic history. The stellar-mass complete sample includes one candidate of a very massive (log(M{sub ∗}/M{sub ⊙})∼11.5), quiescent galaxy at z∼5.4 with MIPS 24 μm detection, suggesting the presence of an obscured active galactic nucleus. Finally, we show that the observed number of 4
OSTI ID:
22882577
Journal Information:
Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 1 Vol. 803; ISSN ASJOAB; ISSN 0004-637X
Country of Publication:
United Kingdom
Language:
English

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