We have carried out a wide-field imaging survey for [O II] lambda 3727 emitting galaxies at z approximate to 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 ( Delta z 0: 03), corresponding to a survey volume of 5: 56; 105 Mpc(3). We obtain a sample of 3176 [O II] emitting galaxies with observed emission-line equivalent widths greater than 268. 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 10(- 0: 06)(40: 35+0: 08) ergs s (-1) Mpc (-3), corresponding to star formation rate density of 0: 32(- 0: 04)(+0: 06) M-circle dot yr(-1) Mpc(-3) in the COSMOS field at z approximate to 1: 2. This is the largest survey for [O II] emitters beyond z 1 currently available.
The [O (ii)] lambda 3727 luminosity function and star formation rate at z approximate to 1.2 in the COSMOS 2 square degree field and the Subaru Deep Field / M.I. Takahashi, Y. Shioya, Y. Taniguchi, T. Murayama, M. Ajiki, S.S. Sasaki, O. Koizumi, T. Nagao, N.Z. Scoville, B. Mobasher, H. Aussel, P. Capak, C. Carilli, R.S. Ellis, B. Garilli, M. Giavalisco, L. Guzzo, G. Hasinger, C. Impey, M.G. Kitzbichler, A. Koekemoer, O. Le Fèvre, S.J. Lilly, D. Maccagni, A. Renzini, M. Rich, D.B. Sanders, E. Schinnerer, M. Scodeggio, P. Shopbell, V. Smolčić, S. Tribiano, Y. Ideue, S. Mihara. - In: ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES. - ISSN 0067-0049. - 172:1(2007), pp. 456-467. [10.1086/518037]
The [O (ii)] lambda 3727 luminosity function and star formation rate at z approximate to 1.2 in the COSMOS 2 square degree field and the Subaru Deep Field
L. Guzzo;
2007
Abstract
We have carried out a wide-field imaging survey for [O II] lambda 3727 emitting galaxies at z approximate to 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 ( Delta z 0: 03), corresponding to a survey volume of 5: 56; 105 Mpc(3). We obtain a sample of 3176 [O II] emitting galaxies with observed emission-line equivalent widths greater than 268. 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 10(- 0: 06)(40: 35+0: 08) ergs s (-1) Mpc (-3), corresponding to star formation rate density of 0: 32(- 0: 04)(+0: 06) M-circle dot yr(-1) Mpc(-3) in the COSMOS field at z approximate to 1: 2. This is the largest survey for [O II] emitters beyond z 1 currently available.
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