Hostname: page-component-586b7cd67f-gb8f7 Total loading time: 0 Render date: 2024-11-26T23:41:11.491Z Has data issue: false hasContentIssue false
  • English
  • Français

Galactic chemical evolution and GRB host identification

Published online by Cambridge University Press:  27 October 2016

Francesca Matteucci  and
Valentina Grieco
Francesca Matteucci
Affiliation:
Dipartimento di Fisica, Universita' di Trieste, Via G.B. Tiepolo, 11 34131TriesteItaly email: [email protected]
Valentina Grieco
Affiliation:
Dipartimento di Fisica, Universita' di Trieste, Via G.B. Tiepolo, 11 34131TriesteItaly email: [email protected]
Rights & Permissions [Opens in a new window]

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

We describe a method to identify GRB host galaxies by means of their chemical abundances. We apply this method to three GRB hosts by comparing detailed chemical evolution models, including dust, of galaxies of different morphological type to observed abundance ratios. We conclude that none of them is likely to be a dwarf irregular galaxy, as it is believed for the majority of GRB hosts, but rather two of them (GRB081008 and GRB120327A) are likely to be spirals and the third is likely to be an elliptical (GRB120815). In addition, we have derived their chemical ages: in particular, the elliptical host is only 15 Myr old, while the other two hosts are 50 Myr (GRB120327A) and 320 Myr (GRB130815).

Keywords

galaxies: evolutiongamma rays: bursts
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 255 - 256
Copyright
Copyright © International Astronomical Union 2016 

References

Calura, F., Pipino, A., & Matteucci, F. 2008, A&A 479, 669 Google Scholar
D'Elia, V., Fynbo, J. P. U., & Goldoni, P., et al. 2014, A&A, 564, 38 Google Scholar
D'Elia, V., Campana, S., & Covino, S., et al. 2011, MNRAS, 418, 680 CrossRefGoogle Scholar
Grieco, V. & Matteucci, F., Calura, F. et al. 2014, MNRAS, 444, 1054 CrossRefGoogle Scholar
Kennicutt, R. C. Jr. 1998, ApJ, 498, 541 CrossRefGoogle Scholar
Kruhler, T., Ledoux, C., & Fynbo, J. P. U. et al. 2013, A&A, 557, 18 Google Scholar
Salpeter, E. E. 1955, ApJ, 121, 161 CrossRefGoogle Scholar