The Mass-Metallicity Relation At z 1.5 For A Sample Of Lensed Galaxies

Details The Mass-Metallicity Relation At z 1.5 For A Sample Of Lensed Galaxies The Mass-Metallicity Relation At z 1.5 For A Sample Of Lensed Galaxies

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21922905w&link_type=abstract

American Astronomical Society, AAS Meeting #219, #229.05

Astronomy and Astrophysics

Astronomy

Scientific paper

We present the relation between stellar mass and gas-phase metallicity for a sample of 11 lensed galaxies at a median z=1.50+/-0.55. They are selected from the uniform, complete sample of >150 lensed sources we recently identified from a systematic survey of the SDSS DR7 (Gladders et al. 2011, in preparation). We derive stellar masses from the rest-frame UV to near-IR spectral energy distributions (SED) and metallicities from the [N II]/Hα ratio as observed with Keck/NIRSPEC. Star formation rates (SFR) are estimated both from the dust-corrected Hα flux and from the SED model. Adding data on additional lensed galaxies from the literature, we investigate the shape and scatter of the fundamental metallicity relation between stellar mass, metallicity and SFR (Mannucci et al. 2010) for individual star-forming galaxies at z 1.5, down to intrinsically lower stellar masses and SFRs than can generally be probed by non-lensed samples.

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