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  1. OA@INAF
  2. PRODOTTI RICERCA INAF
  3. 1 CONTRIBUTI IN RIVISTE (Journal articles)
  4. 1.01 Articoli in rivista
Please use this identifier to cite or link to this item: http://hdl.handle.net/20.500.12386/27963
Title: Mass and metallicity scaling relations of high-redshift star-forming galaxies selected by GRBs
Authors: Arabsalmani, M.
Møller, P.
Perley, D. A.
Freudling, W.
Fynbo, J. P. U.
Le Floc'h, E.
Zwaan, M. A.
Schulze, S.
Tanvir, N. R.
Christensen, L.
Levan, A. J.
Jakobsson, P.
Malesani, D.
Cano, Z.
COVINO, Stefano 
D'Elia, V.
Goldoni, P.
Gomboc, A.
Heintz, K. E.
Sparre, M.
de Ugarte Postigo, A.
Vergani, S. D.
Issue Date: 2018
Journal: MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 
Number: 473
Issue: 3
First Page: 3312
Abstract: We present a comprehensive study of the relations between gas kinematics, metallicity and stellar mass in a sample of 82 gamma-ray burst (GRB)-selected galaxies using absorption and emission methods. We find the velocity widths of both emission and absorption profiles to be a proxy of stellar mass. We also investigate the velocity-metallicity correlation and its evolution with redshift. Using 33 GRB hosts with measured stellar mass and metallicity, we study the mass-metallicity relation for GRB host galaxies in a stellar mass range of 10<SUP>8.2</SUP>-10<SUP>11.1</SUP> M<SUB>☉</SUB> and a redshift range of z ∼ 0.3-3.4. The GRB-selected galaxies appear to track the mass-metallicity relation of star-forming galaxies but with an offset of 0.15 towards lower metallicities. This offset is comparable with the average error bar on the metallicity measurements of the GRB sample and also the scatter on the mass-metallicity relation of the general population. It is hard to decide whether this relatively small offset is due to systematic effects or the intrinsic nature of GRB hosts. We also investigate the possibility of using absorption-line metallicity measurements of GRB hosts to study the mass-metallicity relation at high redshifts. Our analysis shows that the metallicity measurements from absorption methods can significantly differ from emission metallicities and assuming identical measurements from the two methods may result in erroneous conclusions.
URI: http://hdl.handle.net/20.500.12386/27963
URL: https://academic.oup.com/mnras/article-abstract/473/3/3312/4222621?redirectedFrom=fulltext
ISSN: 0035-8711
DOI: 10.1093/mnras/stx2451
Bibcode ADS: 2018MNRAS.473.3312A
Fulltext: open
Appears in Collections:1.01 Articoli in rivista

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