1141 articles – 4007 references  [version française]
HAL: hal-00288465, version 1
arXiv: 0803.1002
ADS Bibliographic id: 2008ApJ...680..939C
DOI: 10.1086/588038
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The Astrophysical Journal 680 (2008) 939-961
The Optical Spectra of 24 ?m Galaxies in the COSMOS Field. I. Spitzer MIPS Bright Sources in the zCOSMOS-Bright 10k Catalog
K. I. Caputi, S. J. Lilly, H. Aussel, D. Sanders, D. Frayer, O. Le Fèvre 1, A. Renzini, G. Zamorani, M. Scodeggio, T. Contini 2, N. Scoville, C. M. Carollo, G. Hasinger, A. Iovino, V. Le Brun 1, E. Le Floc'h, C. Maier, V. Mainieri, M. Mignoli, M. Salvato, D. Schiminovich 3, J. Silverman, J. Surace 4, L. Tasca 1, U. Abbas, S. Bardelli, M. Bolzonella, A. Bongiorno 5, D. Bottini 6, P. Capak, A. Cappi 6, P. Cassata, A. Cimatti, O. Cucciati 7, S. de la Torre, L. de Ravel, P. Franzetti 6, M. Fumana, B. Garilli 6, C. Halliday, O. Ilbert, P. Kampczyk, J. Kartaltepe, J.-P. Kneib 2, C. Knobel, K. Kovac, F. Lamareille 2, A. Leauthaud 1, J. F. Le Borgne 2, D. Maccagni 6, C. Marinoni 1, H. McCracken 8, B. Meneux 1, P. Oesch, R. Pellò 2, E. Pérez-Montero, C. Porciani, E. Ricciardelli, R. Scaramella 6, C. Scarlata, L. Tresse 1, D. Vergani 9, J. Walcher, M. Zamojski, E. Zucca 6
(2008-06)
We study zCOSMOS-bright optical spectra for 609 Spitzer MIPS 24 ?m-selected galaxies with S24?m>0.30 mJy and I<22.5 (AB mag) over 1.5 deg2 of the COSMOS field. From emission-line diagnostics we find the following: (1) SFRs derived from the observed H? ?6563 and H? ?4861 lines underestimate, on average, the total SFR by factors of ~5 and 10, respectively. (2) Both the Calzetti et al. and the Milky Way reddening laws are suitable to describe the extinction observed in IR sources in most cases. (3) Some IR galaxies at z<0.3 have low abundances, but many others with similar IR luminosities and redshifts are chemically enriched. (4) The average [O III] ?5007/H? ?4861 ratios of ?L24?m?>1011 Lsolar galaxies at 0.6
1:  Laboratoire d'Astrophysique de Marseille (LAM)
CNRS : UMR6110 – INSU – Université de Provence - Aix-Marseille I
2:  Laboratoire Astrophysique de Toulouse-Tarbes (LATT)
CNRS : UMR5572 – INSU – Observatoire Midi-Pyrénées – Université Paul Sabatier [UPS] - Toulouse III
3:  California Institute of Technology (CALTECH)
California Institute of Technology
4:  Autres
AUTRE
5:  Università di Bologna, Dipartimento di Astronomia
Università degli studi di Bologna
6:  INAF- Osservatorio Astronomico di Bologna (INAF)
INAF
7:  Istituto Nazionale di Astrofisica - Osservatorio Astronomico di Brera (INAF)
Istituto Nazionale di Astrofisica
8:  Institut d'Astrophysique de Paris (IAP)
CNRS : UMR7095 – INSU – Université Pierre et Marie Curie [UPMC] - Paris VI
9:  Institute of Liver Studies
King's College Hospital
Subject :  Physics/Astrophysics/Cosmology and Extra-Galactic Astrophysics
Keyword(s): Galaxies: Abundances – Galaxies: Active – Galaxies: Evolution – Infrared: Galaxies
Fulltext link: 
http://fr.arXiv.org/abs/0803.1002
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From: Dominique Lullier <>
Submitted on: Tuesday, 17 June 2008 09:24:20
Updated on: Tuesday, 17 June 2008 09:24:20