Star-forming fractions and galaxy evolution with redshift in rich X-ray-selected galaxy clusters
| العنوان: | Star-forming fractions and galaxy evolution with redshift in rich X-ray-selected galaxy clusters |
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| المؤلفون: | A. Rettura, C. Lidman, Myungkook J. Jee, Piero Rosati, Raphael Gobat, R. Demarco, J. Nantais |
| المساهمون: | Universidad de Concepción - University of Concepcion [Chile], Department of Astronomy [Pasadena], California Institute of Technology (CALTECH), Australian Astronomical Observatory, Astrophysique Interprétation Modélisation (AIM (UMR7158 / UMR_E_9005 / UM_112)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), European Southern Observatory (ESO), Department of Physics, University of California, University of California [Los Angeles] (UCLA), University of California (UC)-University of California (UC), Departamento de Astronomía, Astrophysique Interprétation Modélisation (AIM (UMR_7158 / UMR_E_9005 / UM_112)), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7), University of California-University of California |
| المصدر: | ASTRONOMY & ASTROPHYSICS Artículos CONICYT CONICYT Chile instacron:CONICYT Astronomy and Astrophysics-A&A Astronomy and Astrophysics-A&A, 2013, 556, pp.A112. ⟨10.1051/0004-6361/201321877⟩ Astronomy and Astrophysics-A&A, EDP Sciences, 2013, 556, pp.A112. ⟨10.1051/0004-6361/201321877⟩ |
| بيانات النشر: | EDP SCIENCES S A, 2013. |
| سنة النشر: | 2013 |
| مصطلحات موضوعية: | Cosmology and Nongalactic Astrophysics (astro-ph.CO), Stellar mass, FOS: Physical sciences, Astrophysics, Astrophysics::Cosmology and Extragalactic Astrophysics, 01 natural sciences, Spectral line, 0103 physical sciences, Galaxy formation and evolution, 010303 astronomy & astrophysics, Galaxy cluster, Astrophysics::Galaxy Astrophysics, Physics, 010308 nuclear & particles physics, Star formation, galaxies: clusters: individual: RDCS J1252.9-2927, Sigma, Astronomy and Astrophysics, Redshift, Galaxy, galaxies: clusters: individual: RX J0152.7-1357, galaxies: clusters: general, Space and Planetary Science, Astrophysics::Earth and Planetary Astrophysics, galaxies: evolution, [PHYS.ASTR]Physics [physics]/Astrophysics [astro-ph], Astrophysics - Cosmology and Nongalactic Astrophysics |
| الوصف: | We have compared stacked spectra of galaxies, grouped by environment and stellar mass, among 58 members of the redshift z = 1.24 galaxy cluster RDCS J1252.9-2927 (J1252.9) and 134 galaxies in the z = 0.84 cluster RX J0152.7-1357 (J0152.7). These two clusters are excellent laboratories to study how galaxies evolve from star-forming to passive at z ~ 1. We measured spectral indices and star-forming fractions for our density- and mass-based stacked spectra. The star-forming fraction among low-mass galaxies (< 7 x 10^10 M_sun) is higher in J1252.9 than in J0152.7, at about 4 sigma significance. Thus star formation is being quenched between z = 1.24 and z = 0.84 for a substantial fraction of low-mass galaxies. Star-forming fractions were also found to be higher in J1252.9 in all environments, including the core. Passive galaxies in J1252.9 have systematically lower D_n4000 values than in J0152.7 in all density and mass groups, consistent with passive evolution at modestly super-solar metallicities. 18 pages, 14 figures, accepted for publication in A&A |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 0004-6361 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a5c40cf36e52e4873c52094cb76bb179 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....a5c40cf36e52e4873c52094cb76bb179 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 00046361 |
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