%0 Generic %1 stott2013fundamental %A Stott, John P. %A Sobral, David %A Bower, Richard %A Smail, Ian %A Best, Philip N. %A Matsuda, Yuichi %A Hayashi, Masao %A Geach, James E. %A Kodama, Tadayuki %D 2013 %K highz metallicity relation sfr %T A fundamental metallicity relation for galaxies at z = 0.84 - 1.47 from HiZELS %U http://arxiv.org/abs/1309.0506 %X We obtained Subaru FMOS observations of Halpha emitting galaxies selected from the HiZELS narrow-band survey, to investigate the relationship between stellar mass, metallicity and star-formation rate at z = 0.84 - 1.47, for comparison with the Fundamental Metallicity Relation seen at low redshift. Our findings demonstrate, for the first time with a homogeneously selected sample, that a relationship exists for typical star-forming galaxies at z = 1 - 1.5 and that it is surprisingly similar to that seen locally. Therefore, star-forming galaxies at z = 1 - 1.5 are no less metal abundant than galaxies of similar mass and star formation rate (SFR) at z = 0.1, contrary to claims from some earlier studies. We conclude that the bulk of the metal enrichment for this star-forming galaxy population takes place in the 4 Gyr before z = 1.5. We fit a new mass-metallicity-SFR plane to our data which is consistent with other high redshift studies. However, there is some evidence that the mass-metallicity component of this high redshift plane is flattened, at all SFR, compared with z = 0.1, suggesting that processes such as star-formation driven winds, thought to remove enriched gas from low mass halos, are yet to have as large an impact at this early epoch. The negative slope of the SFR-metallicity relation from this new plane is consistent with the picture that the elevation in the SFR of typical galaxies at z > 1 is fuelled by the inflow of metal-poor gas and not major merging.

@misc{stott2013fundamental, abstract = {We obtained Subaru FMOS observations of Halpha emitting galaxies selected from the HiZELS narrow-band survey, to investigate the relationship between stellar mass, metallicity and star-formation rate at z = 0.84 - 1.47, for comparison with the Fundamental Metallicity Relation seen at low redshift. Our findings demonstrate, for the first time with a homogeneously selected sample, that a relationship exists for typical star-forming galaxies at z = 1 - 1.5 and that it is surprisingly similar to that seen locally. Therefore, star-forming galaxies at z = 1 - 1.5 are no less metal abundant than galaxies of similar mass and star formation rate (SFR) at z = 0.1, contrary to claims from some earlier studies. We conclude that the bulk of the metal enrichment for this star-forming galaxy population takes place in the 4 Gyr before z = 1.5. We fit a new mass-metallicity-SFR plane to our data which is consistent with other high redshift studies. However, there is some evidence that the mass-metallicity component of this high redshift plane is flattened, at all SFR, compared with z = 0.1, suggesting that processes such as star-formation driven winds, thought to remove enriched gas from low mass halos, are yet to have as large an impact at this early epoch. The negative slope of the SFR-metallicity relation from this new plane is consistent with the picture that the elevation in the SFR of typical galaxies at z > 1 is fuelled by the inflow of metal-poor gas and not major merging.}, added-at = {2013-09-04T17:08:08.000+0200}, author = {Stott, John P. and Sobral, David and Bower, Richard and Smail, Ian and Best, Philip N. and Matsuda, Yuichi and Hayashi, Masao and Geach, James E. and Kodama, Tadayuki}, biburl = {https://www.bibsonomy.org/bibtex/2df10416d6d85235a18992d3093a5a156/miki}, description = {[1309.0506] A fundamental metallicity relation for galaxies at z = 0.84 - 1.47 from HiZELS}, interhash = {46516395d93868987027f62fd5b1fad2}, intrahash = {df10416d6d85235a18992d3093a5a156}, keywords = {highz metallicity relation sfr}, note = {cite arxiv:1309.0506Comment: Accepted for publication in MNRAS}, timestamp = {2013-09-04T17:08:27.000+0200}, title = {A fundamental metallicity relation for galaxies at z = 0.84 - 1.47 from HiZELS}, url = {http://arxiv.org/abs/1309.0506}, year = 2013 }