Stellar metallicity of star-forming galaxies at redshift z∼2

被引：0
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作者：
Halliday, C. [1 ]
Cimatti, A. [2 ]
机构：
[1] Osserv Astrofis Arcetri, Largo E Fermi 5, I-50125 Florence, Italy
[2] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy
来源：
AT THE EDGE OF THE UNIVERSE: LATEST RESULTS FROM THE DEEPEST ASTRONOMICAL SURVEYS | 2007年 / 380卷
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中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present a measurement of stellar metallicity for star-forming galaxies at redshifts z similar to 2. Galaxies were observed as part of the Galaxy Mass Assembly ultradeep Spectroscopic Survey (GMASS) and targetted to have Spitzer IRAC 4.5 mu m magnitude m(4.5 mu m)<23.02 and photometric redshift of Z(phot)>1.4, and as possible progenitors of early-type galaxies in the nearby Universe. Metallicity was measured for 72 coadded galaxy spectra using an index defined by Rix, Pettini and collaborators for theoretical star-forming galaxy spectra.
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页码：517 / +
页数：2
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