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Quiescent compact galaxies at intermediate Redshift in the cosmos field. The number density

Journal Article · · Astrophysical Journal
 [1]; ; ;  [2]
  1. Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, MA 02138 (United States)
  2. Smithsonian Astrophysical Observatory, 60 Garden St., Cambridge, MA 02138 (United States)
We investigate the evolution of compact galaxy number density over the redshift range 0.21 for equivalently selected compact samples. Small variations in the abundance of the COSMOS compact sources as a function of redshift correspond to known structures in the field. The constancy of the compact galaxy number density is robust and insensitive to the compactness threshold or the stellar mass range (for M{sub ∗}>10{sup 10} M{sub ⊙}). To maintain constant number density any size growth of high-redshift compact systems with decreasing redshift must be balanced by a formation of quiescent compact systems at z<1.
OSTI ID:
22883040
Journal Information:
Astrophysical Journal, Journal Name: Astrophysical Journal Journal Issue: 2 Vol. 806; ISSN ASJOAB; ISSN 0004-637X
Country of Publication:
United Kingdom
Language:
English

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