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
- Physics and Astronomy Department, University of Missouri, Columbia, MO 65211 (United States)
- Physics and Astronomy Department, Tufts University, Robinson Hall, Room 257, Medford, MA 02155 (United States)
- Leiden Observatory, Leiden University, P.O. Box 9513, 2300 RA Leiden (Netherlands)
- Space Telescope Science Institute, Baltimore, MD 21218 (United States)
- SUPA—Scottish Universities Physics Alliance—Institute for Astronomy, University of Edinburgh, Royal Observatory, Edinburgh EH9 3HJ (United Kingdom)
- Dark Cosmology Centre, Niels Bohr Institute, Copenhagen University, Juliane Maries Vej 30, DK-2100 Copenhagen O (Denmark)
- 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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