Massive $z\sim1.3$ evolved galaxies revealed

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ID: 272057
2003
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Abstract
We present the results of TNG near-IR low resolution spectroscopy of two (S7F5_254 and S7F5_45) sources belonging to a complete sample of 15 EROs with K' and selected from the MUNICS Survey. Both the spectra show a sharp drop in the continuum which can be ascribed only to the Balmer break. This places them at 1.2 . Their rest-frame K-band absolute magnitude is (L ). The comparison of the spectra and the photometric data with a grid of synthetic template spectra provides a redshift for S7F5_254 and for S7F5_45. The resulting lower limits to their stellar mass are and . The minimum age of the last burst of star formation in S7F5_254 is 3.5 Gyr while it is 0.5 Gyr in S7F5_45 implying a minimum formation redshift and for the two EROs respectively.
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Authors P. Saracco,Marcella Longhetti,Paola Severgnini,Roberto Della Ceca,Filippo Mannucci,R. Bender,N. Drory,Georg Feulner,F. Ghinassi,U. Hopp,Claudia Maraston;P. Saracco;Marcella Longhetti;Paola Severgnini;Roberto Della Ceca;Filippo Mannucci;R. Bender;N. Drory;Georg Feulner;F. Ghinassi;U. Hopp;Claudia Maraston;
Journal astronomy & astrophysics
Year 2003
DOI
10.1051/0004-6361:20021696
URL
https://sciprofiles.com/publication/view/66f7f60b38c5c6463bf561fc4088150a
Keywords
survey formation spectra two minimum eros redshift gyr s7f5_254 s7f5_45

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