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K+a galaxies in the zCOSMOS Survey: Physical properties of systems in their post-starburst phase
- Source :
- Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, EDP Sciences, 2010, 509, pp.A42. ⟨10.1051/0004-6361/200912802⟩, Astronomy and astrophysics, 509:A42. EDP Sciences, Astronomy and Astrophysics-A&A, 2010, 509, pp.A42. ⟨10.1051/0004-6361/200912802⟩
- Publication Year :
- 2010
- Publisher :
- HAL CCSD, 2010.
-
Abstract
- The identities of the main processes triggering and quenching star-formation in galaxies remain unclear. A key stage in evolution, however, appears to be represented by post-starburst galaxies. To investigate their impact on galaxy evolution, we initiated a multiwavelength study of galaxies with k+a spectral features in the COSMOS field. We examine a mass-selected sample of k+a galaxies at z=0.48-1.2 using the spectroscopic zCOSMOS sample. K+a galaxies occupy the brightest tail of the luminosity distribution. They are as massive as quiescent galaxies and populate the green valley in the colour versus luminosity (or stellar mass) distribution. A small percentage (<br />17 pages, 9 figures. Accepted for publication in Astronomy and Astrophysics on 09/09/2009 (no changes wrt v1)
- Subjects :
- Cosmology and Nongalactic Astrophysics (astro-ph.CO)
galaxies: evolution – galaxies: fundamental parameters – galaxies: luminosity function, mass function – cosmology: observations – galaxies: formation
Stellar mass
Formation
FOS: Physical sciences
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
Spectral line
Luminosity
[PHYS.ASTR.CO]Physics [physics]/Astrophysics [astro-ph]/Cosmology and Extra-Galactic Astrophysics [astro-ph.CO]
Phase (matter)
0103 physical sciences
Galaxy formation and evolution
galaxies: formation
010303 astronomy & astrophysics
Astrophysics::Galaxy Astrophysics
Physics
010308 nuclear & particles physics
Luminosity function
Spectral properties
Astronomy and Astrophysics
galaxies: fundamental parameters
Galaxies
Fundamental parameters - Galaxies
Astrophysics - Astrophysics of Galaxies
Galaxy
Redshift
Cosmology
galaxies: luminosity function
Observations - Galaxies
Evolution - Galaxies
Luminosity function, mass function
Space and Planetary Science
mass function
Astrophysics of Galaxies (astro-ph.GA)
cosmology: observations
galaxies: evolution
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Language :
- English
- ISSN :
- 00046361
- Database :
- OpenAIRE
- Journal :
- Astronomy and Astrophysics-A&A, Astronomy and Astrophysics-A&A, EDP Sciences, 2010, 509, pp.A42. ⟨10.1051/0004-6361/200912802⟩, Astronomy and astrophysics, 509:A42. EDP Sciences, Astronomy and Astrophysics-A&A, 2010, 509, pp.A42. ⟨10.1051/0004-6361/200912802⟩
- Accession number :
- edsair.doi.dedup.....5400721e23a08be31f40275e5b28e5e7
- Full Text :
- https://doi.org/10.1051/0004-6361/200912802⟩