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Title:
The [O II] λ3727 Luminosity Function and Star Formation Rate at z~1.2 in the COSMOS 2 Square Degree Field and the Subaru Deep Field
Authors:
Takahashi, M. I.; Shioya, Y.; Taniguchi, Y.; Murayama, T.; Ajiki, M.; Sasaki, S. S.; Koizumi, O.; Nagao, T.; Scoville, N. Z.; Mobasher, B.; Aussel, H.; Capak, P.; Carilli, C.; Ellis, R. S.; Garilli, B.; Giavalisco, M.; Guzzo, L.; Hasinger, G.; Impey, C.; Kitzbichler, M. G.; Koekemoer, A.; Le Fèvre, O.; Lilly, S. J.; Maccagni, D.; Renzini, A.; Rich, M.; Sanders, D. B.; Schinnerer, E.; Scodeggio, M.; Shopbell, P.; Smolčić, V.; Tribiano, S.; Ideue, Y.; Mihara, S.
Affiliation:
AA(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578, Japan.), AB(Physics Department, Graduate School of Science and Engineering, Ehime University, Bunkyo-cho, Matsuyama 790-8577, Japan.), AC(Physics Department, Graduate School of Science and Engineering, Ehime University, Bunkyo-cho, Matsuyama 790-8577, Japan.), AD(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578, Japan.), AE(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578, Japan.), AF(Physics Department, Graduate School of Science and Engineering, Ehime University, Bunkyo-cho, Matsuyama 790-8577, Japan.), AG(Astronomical Institute, Graduate School of Science, Tohoku University, Aramaki, Aoba, Sendai 980-8578, Japan.), AH(National Astronomical Observatory of Japan, Mitaka, Tokyo 181-8588, Japan.; INAF-Osservatorio Astrofisico di Arcetri, Largo Enrico Fermi 5, 50125 Firenze, Italy.), AI(California Institute of Technology, MC 105-24, 1200 East California Boulevard, Pasadena, CA 91125.; Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822.), AJ(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218.), AK(Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822.; Service d'Astrophysique, CEA/Saclay, 91191 Gif-sur-Yvette, France.), AL(California Institute of Technology, MC 105-24, 1200 East California Boulevard, Pasadena, CA 91125.), AM(National Radio Astronomy Observatory, P.O. Box O, Socorro, NM 87801-0387.), AN(California Institute of Technology, MC 105-24, 1200 East California Boulevard, Pasadena, CA 91125.), AO(CNR Instituto di Astrofisica Spaziale e Fisica Cosmica Milano, Milan, Italy.), AP(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218.), AQ(Osservatorio Astronomico di Brera, via Brera, Milan, Italy.), AR(Max Planck Institut fuer Extraterrestrische Physik, D-85478 Garching, Germany.), AS(Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721.), AT(Max-Planck-Institut für Astrophysik, D-85748 Garching bei München, Germany.), AU(Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218.), AV(Laboratoire d'Astrophysique de Marseille, BP 8, Traverse du Siphon, 13376 Marseille Cedex 12, France.), AW(Department of Physics, Swiss Federal Institute of Technology (ETH-Zurich), CH-8093 Zurich, Switzerland.), AX(CNR Instituto di Astrofisica Spaziale e Fisica Cosmica Milano, Milan, Italy.), AY(European Southern Observatory, Karl-Schwarzschild-Strasse 2, D-85748 Garching, Germany.), AZ(Department of Physics and Astronomy, University of California, Los Angeles, CA 90095.), BA(Institute for Astronomy, University of Hawaii, 2680 Woodlawn Drive, Honolulu, HI 96822.), BB(Max Planck Institut für Astronomie, Königstuhl 17, Heidelberg, D-69117, Germany.), BC(CNR Instituto di Astrofisica Spaziale e Fisica Cosmica Milano, Milan, Italy.), BD(California Institute of Technology, MC 105-24, 1200 East California Boulevard, Pasadena, CA 91125.), BE(Princeton University Observatory, Princeton, NJ 08544.; University of Zagreb, Department of Physics, Bijenicka cesta 32, 10000 Zagreb, Croatia.), BF(American Museum of Natural History, New York, NY.; CUNY Bronx Community College, New York, NY.), BG(Physics Department, Graduate School of Science and Engineering, Ehime University, Bunkyo-cho, Matsuyama 790-8577, Japan.), BH(Physics Department, Graduate School of Science and Engineering, Ehime University, Bunkyo-cho, Matsuyama 790-8577, Japan.)
Publication:
The Astrophysical Journal Supplement Series, Volume 172, Issue 1, pp. 456-467. (ApJS Homepage)
Publication Date:
09/2007
Origin:
UCP
ApJ Keywords:
Galaxies: Distances and Redshifts, Galaxies: Evolution, Galaxies: Luminosity Function, Mass Function
DOI:
10.1086/518037
Bibliographic Code:
2007ApJS..172..456T

Abstract

We have carried out a wide-field imaging survey for [O II] λ3727 emitting galaxies at z~1.2 in the HST COSMOS 2 square degree field using the Suprime-Cam on the Subaru Telescope. The survey covers a sky area of 6700 arcmin 2 in the COSMOS field, and a redshift range between 1.17 and 1.20 (Δz=0.03), corresponding to a survey volume of 5.56×105 Mpc3. We obtain a sample of 3176 [O II] emitting galaxies with observed emission-line equivalent widths greater than 26 Å. Since our survey tends to sample brighter [O II] emitting galaxies, we also analyze a sample of fainter [O II] emitting galaxies found in the Subaru Deep Field (SDF). We find an extinction-corrected [O II] luminosity density of 1040.35+0.08-0.06 ergs s-1 Mpc-3, corresponding to star formation rate density of 0.32+0.06-0.04 Msolar yr-1 Mpc-3 in the COSMOS field at z~1.2. This is the largest survey for [O II] emitters beyond z=1 currently available.

Based on data collected at Subaru Telescope, which is operated by the National Astronomical Observatory of Japan.


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