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Testing the Universality of the Fundamental Metallicity Relation at High Redshift Using Low-mass Gravitationally Lensed Galaxies

Belli, Sirio and Jones, Tucker and Ellis, Richard S. and Richard, Johan (2013) Testing the Universality of the Fundamental Metallicity Relation at High Redshift Using Low-mass Gravitationally Lensed Galaxies. Astrophysical Journal, 772 (2). Art. No. 141. ISSN 0004-637X. https://resolver.caltech.edu/CaltechAUTHORS:20130827-135915834

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Abstract

We present rest-frame optical spectra for a sample of nine low-mass star-forming galaxies in the redshift range 1.5 < z < 3 which are gravitationally lensed by foreground clusters. We used Triplespec, an echelle spectrograph at the Palomar 200 inch telescope that is very effective for this purpose as it samples the entire near-infrared spectrum simultaneously. By measuring the flux of nebular emission lines, we derive gas-phase metallicities and star formation rates, and by fitting the optical to infrared spectral energy distributions we obtain stellar masses. Taking advantage of the high magnification due to strong lensing, we are able to probe the physical properties of galaxies with stellar masses in the range 7.8 < log M/M☉ < 9.4 whose star formation rates are similar to those of typical star-forming galaxies in the local universe. We compare our results with the locally determined relation between stellar mass, gas metallicity, and star formation rate. Our data are in excellent agreement with this relation, with an average offset <Δlog (O/H)> = 0.01 ± 0.08, suggesting a universal relationship. Remarkably, the scatter around the fundamental metallicity relation is only 0.24 dex, smaller than that observed locally at the same stellar masses, which may provide an important additional constraint for galaxy evolution models.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://arxiv.org/abs/1302.3614arXivDiscussion Paper
http://dx.doi.org/10.1088/0004-637X/772/2/141 DOIArticle
http://iopscience.iop.org/0004-637X/772/2/141/PublisherArticle
ORCID:
AuthorORCID
Belli, Sirio0000-0002-5615-6018
Jones, Tucker0000-0001-5860-3419
Ellis, Richard S.0000-0001-7782-7071
Richard, Johan0000-0001-5492-1049
Additional Information:© 2013 The American Astronomical Society. Received 2013 February 14; accepted 2013 May 21; published 2013 July 17. We acknowledge Kevin Bundy for providing the WIRC reduction pipeline, Eiichi Egami for the IRAC mosaic images, and Marceau Limousin and Drew Newman for some of the magnification factors. We thank Drew Newman and Gwen Rudie for useful discussions. We also thank the anonymous referee for helpful comments and suggestions. R.S.E. and S.B. are supported for this work via NSF grant 0909159. J.R. is supported by the Marie Curie Career Integration Grant 294074.
Funders:
Funding AgencyGrant Number
NSF0909159
Marie Curie Career Integration Grant294074
Subject Keywords:galaxies: abundances – galaxies: evolution – galaxies: high-redshift – gravitational lensing: strong
Issue or Number:2
Record Number:CaltechAUTHORS:20130827-135915834
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20130827-135915834
Official Citation:Testing the Universality of the Fundamental Metallicity Relation at High Redshift Using Low-mass Gravitationally Lensed Galaxies Sirio Belli et al. 2013 ApJ 772 141
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:40961
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:29 Aug 2013 23:35
Last Modified:03 Oct 2019 05:44

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