%0 Generic %1 Rigby2011 %A Rigby, J. R. %A Wuyts, E. %A Gladders, M. D. %A Sharon, K. %A Becker, G. D. %D 2011 %K galaxy high-z metallicity %T The Physical Conditions of a Lensed Star-forming Galaxy at z=1.7 %U http://arxiv.org/abs/1102.2441 %X We report rest-frame optical Keck/NIRSPEC spectroscopy of the bright lensed galaxy RCSGA 032727-132609 at z=1.7037. From precise measurements of the nebular lines, we infer a number of physical properties: redshift, extinction, star formation rate, ionization parameter, electron density, electron temperature, oxygen abundance, and N/O, Ne/O, and Ar/O abundance ratios. The limit on O III~4363 A tightly constrains the oxygen abundance via the "direct" or electron temperature method, for the first time in an average-metallicity galaxy at z~2. We compare this result to several standard "bright-line" O abundance diagnostics, thereby testing these empirically-calibrated diagnostics in situ. Finally, we explore the positions of lensed and unlensed galaxies in standard diagnostic diagrams, and explore the diversity of ionization conditions and mass--metallicity ratios at z=2.

@misc{Rigby2011, abstract = { We report rest-frame optical Keck/NIRSPEC spectroscopy of the bright lensed galaxy RCSGA 032727-132609 at z=1.7037. From precise measurements of the nebular lines, we infer a number of physical properties: redshift, extinction, star formation rate, ionization parameter, electron density, electron temperature, oxygen abundance, and N/O, Ne/O, and Ar/O abundance ratios. The limit on [O III]~4363 A tightly constrains the oxygen abundance via the "direct" or electron temperature method, for the first time in an average-metallicity galaxy at z~2. We compare this result to several standard "bright-line" O abundance diagnostics, thereby testing these empirically-calibrated diagnostics in situ. Finally, we explore the positions of lensed and unlensed galaxies in standard diagnostic diagrams, and explore the diversity of ionization conditions and mass--metallicity ratios at z=2. }, added-at = {2011-02-21T07:06:14.000+0100}, author = {Rigby, J. R. and Wuyts, E. and Gladders, M. D. and Sharon, K. and Becker, G. D.}, biburl = {https://www.bibsonomy.org/bibtex/2642702f5a133752cedde0b4ffc7a7266/miki}, description = {[1102.2441] The Physical Conditions of a Lensed Star-forming Galaxy at z=1.7}, interhash = {42a042917431e847ec8690b3b2285fe4}, intrahash = {642702f5a133752cedde0b4ffc7a7266}, keywords = {galaxy high-z metallicity}, note = {cite arxiv:1102.2441 Comment: ApJ in press. 15 pages, 7 figures}, timestamp = {2011-02-21T07:06:14.000+0100}, title = {The Physical Conditions of a Lensed Star-forming Galaxy at z=1.7}, url = {http://arxiv.org/abs/1102.2441}, year = 2011 }