| Precise if your presentation is oral or a poster : | poster |
| Title of your presentation : | Spectroscopy of Lyman Break Galaxies at z~5 |
| Abstract |
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We present results of optical spectroscopy of our z~5 LBG candidates in GOODS-N (and its flanking field) and J0053+1234 fields, obtained with GMOS-N and GMOS-S nod-and-shuffle mode, respectively. We identified three new LBGs. Combining with our previous results by Ando et al. (2004, 2007), we have 16 spectroscopically identified LBGs. LBGs with larger redshift tend to have redder V-Ic colors, consistent with the model color track in the two color diagram (I-z' vs V-Ic). UV luminous LBGs do not show strong Lyman alpha emission line (rest equivalent width smaller than ~20A). We also tried to estimate metallicity from LIS absorption lines.With stellar masses derived from SED fitting, we made a mass-metallicity relation, which suggests the gradual evolution as compared with star-forming galaxies at z~2. |
