THE FMOS-COSMOS SURVEY OF STAR-FORMING GALAXIES AT z ∼ 1.6. II. THE MASS-METALLICITY RELATION AND THE DEPENDENCE ON STAR FORMATION RATE AND DUST EXTINCTION

被引:150
作者
Zahid, H. J. [1 ]
Kashino, D. [2 ]
Silverman, J. D. [3 ]
Kewley, L. J. [4 ]
Daddi, E. [5 ]
Renzini, A. [6 ]
Rodighiero, G. [7 ]
Nagao, T. [8 ]
Arimoto, N. [9 ,10 ]
Sanders, D. B. [1 ]
Kartaltepe, J. [11 ]
Lilly, S. J. [12 ]
Maier, C. [13 ]
Geller, M. J. [14 ]
Capak, P. [15 ,16 ]
Carollo, C. M. [12 ]
Chu, J. [1 ]
Hasinger, G. [1 ]
Ilbert, O. [17 ]
Kajisawa, M. [18 ]
Koekemoer, A. M. [19 ,20 ]
Kovac, K. [8 ]
Le Fevre, O. [17 ]
Masters, D. [21 ]
McCracken, H. J. [22 ]
Onodera, M. [12 ]
Scoville, N. [23 ]
Strazzullo, V. [10 ]
Sugiyama, N. [2 ,4 ]
Taniguchi, Y. [18 ]
机构
[1] Univ Hawaii Manoa, Inst Astron, Honolulu, HI 96822 USA
[2] Nagoya Univ, Grad Sch Sci, Div Particle & Astrophys Sci, Nagoya, Aichi 4648602, Japan
[3] Univ Tokyo, Todai Inst Adv Study, Kavli Inst Phys & Math Universe WPI, Kashiwa, Chiba 2778583, Japan
[4] Australian Natl Univ, Res Sch Astron & Astrophys, Weston, ACT 2611, Australia
[5] CEA Saclay, Serv Astrophys, F-91191 Gif Sur Yvette, France
[6] INAF Osserv Astron Padova, I-35122 Padua, Italy
[7] Univ Padua, Dipartimento Astron, I-35122 Padua, Italy
[8] Kyoto Univ, Hakubi Ctr Adv Res, Kyoto 6068302, Japan
[9] Subaru Telescope, Natl Astron Observ Japan, Hilo, HI 96720 USA
[10] Grad Univ Adv Studies, Dept Astron Sci, Mitaka, Tokyo 1818588, Japan
[11] Natl Opt Astron Observ, Tucson, AZ 85719 USA
[12] ETH, Inst Astron, CH-8093 Zurich, Switzerland
[13] Univ Vienna, Dept Astrophys, A-1180 Vienna, Austria
[14] Smithsonian Astrophys Observ, Cambridge, MA 02138 USA
[15] CALTECH, Pasadena, CA 91125 USA
[16] CALTECH, Spitzer Sci Ctr, Pasadena, CA 91125 USA
[17] Aix Marseille Univ, CNRS, LAM, UMR 7326, F-13388 Marseille, France
[18] Ehime Univ, Res Ctr Space & Cosm Evolut, Matsuyama, Ehime 7908577, Japan
[19] Space Telescope Sci Inst, HST & JWST Instruments, Baltimore, MD 21218 USA
[20] Space Telescope Sci Inst, Div Sci, Baltimore, MD 21218 USA
[21] Observ Carnegie Inst Sci, Pasadena, CA 91101 USA
[22] Univ Paris 06, CNRS, Inst Astrophys Paris, UMR7095, F-75014 Paris, France
[23] CALTECH, Pasadena, CA 91125 USA
关键词
galaxies: abundances; galaxies: evolution; galaxies: fundamental parameters; galaxies: ISM; DIGITAL SKY SURVEY; STELLAR POPULATION SYNTHESIS; ACTIVE GALACTIC NUCLEI; HIGH-REDSHIFT; PHYSICAL-PROPERTIES; OXYGEN ABUNDANCES; SUBARU-TELESCOPE; GAS METALLICITY; LOCAL UNIVERSE; HOST GALAXIES;
D O I
10.1088/0004-637X/792/1/75
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We investigate the relationships between stellar mass, gas-phase oxygen abundance (metallicity), star formation rate (SFR), and dust content of star-forming galaxies at z similar to 1.6 using Subaru/FMOS spectroscopy in the COSMOS field. The mass-metallicity (MZ) relation at z similar to 1.6 is steeper than the relation observed in the local universe. The steeper MZ relation at z similar to 1.6 is mainly due to evolution in the stellar mass where the MZ relation begins to turnover and flatten. This turnover mass is 1.2 dex larger at z similar to 1.6. The most massive galaxies at z similar to 1.6 (similar to 10(11) M-circle dot) are enriched to the level observed in massive galaxies in the local universe. The MZ relation we measure at z similar to 1.6 supports the suggestion of an empirical upper metallicity limit that does not significantly evolve with redshift. We find an anti-correlation between metallicity and SFR for galaxies at a fixed stellar mass at z similar to 1.6, which is similar to trends observed in the local universe. We do not find a relation between stellar mass, metallicity, and SFR that is independent of redshift; rather, our data suggest that there is redshift evolution in this relation. We examine the relation between stellar mass, metallicity, and dust extinction, and find that at a fixed stellar mass, dustier galaxies tend to be more metal rich. From examination of the stellar masses, metallicities, SFRs, and dust extinctions, we conclude that stellar mass is most closely related to dust extinction.
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页数:18
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