Calura 2009 GRB 050830 宿主星系的恒星形成历史

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Title:		The Star Formation History of the GRB 050730 Host Galaxy
Authors:		Calura, Francesco
Affiliation:		AA(Dipartimento di Astronomia, Universita' di Trieste, via G. B. Tiepolo 11, 34131 TRIESTE - ITALY fcalura@oats.inaf.it)
Publication:		Low-Metallicity Star Formation: From the First Stars to Dwarf Galaxies, Proceedings of the International Astronomical Union, IAU Symposium, Volume 255, p. 217-223
Publication Date:		12/2008
Origin:		CUP
Keywords:		Gamma rays: bursts, Galaxies: high-redshift, Galaxies: abundances, ISM: general
Abstract Copyright:		(c) 2008: Copyright © International Astronomical Union 2008
DOI:		10.1017/S174392130802485X
Bibliographic Code:		2008IAUS..255..217C

Abstract

The long GRB 050730 observed at redshift z ~ 4 allowed the determination of the elemental abundances for a set of different chemical elements. We use detailed chemical evolution models taking into account also dust production to constrain the star formation history of the host galaxy of this long GRB. For the host galaxy of GRB 050730, we derive also some dust-related quantities and the specific star formation rate, namely the star formation rate per unit stellar mass. Finally, we compare the properties of the GRB host galaxy with those of Quasar Damped Lyman Alpha absorbers.

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