Details

Autor(en) / Beteiligte

• FINKELSTEIN, Steven L
• PAPOVICH, Casey
• CONSELICE, Christopher J
• DUNLOP, James S
• FABER, S. M
• GROGIN, Norman A
• HATHI, Nimish P
• KOCEVSKI, Dale D
• LAI, Kamson
• LEE, Kyoung-Soo
• MCLURE, Ross J
• MOBASHER, Bahram
• SALMON, Brett
• NEWMAN, Jeffrey A
• FINLA TOR, Kristian
• DICKINSON, Mark
• FERGUSON, Henry C
• GIAVALISCO, Mauro
• KOEKEMOER, Anton M
• REDDY, Naveen A
• BASSETT, Robert

Titel

CANDELS: THE EVOLUTION OF GALAXY REST-FRAME ULTRAVIOLET COLORS FROM z = 8 TO 4

Ist Teil von

• The Astrophysical journal, 2012-09, Vol.756 (2), p.1-19

Ort / Verlag

Bristol: IOP

Erscheinungsjahr

2012

Link zum Volltext

Quelle

Free E-Journal (出版社公開部分のみ）

Beschreibungen/Notizen

• We study the evolution of galaxy rest-frame ultraviolet (UV) colors in the epoch 4 [< or ~] z [< or ~] 8.We use new wide-field near-infrared data in the Great Observatories Origins Deep Survey-South field from the Cosmic Assembly Near-infrared Deep Extragalactic Legacy Survey, Hubble Ultra Deep Field (HUDF) 2009, and Early Release Science programs to select galaxies via photometric redshift measurements. Our sample consists of 2812 candidate galaxies at z [> or ~] 3.5, including 113 at z [~ or =] 7-8. We fit the observed spectral energy distribution to a suite of synthetic stellar population models and measure the value of the UV spectral slope (beta) from the best-fit model spectrum. We do find a strong correlation between beta and the stellar mass at all redshifts, in that more massive galaxies exhibit redder colors. Thus, the stellar-mass - metallicity relation, previously observed up to z ~ 3, may extend out to z = 7-8.