No correlation between host galaxy metallicity and gamma-ray energy release for long-duration gamma-ray bursts

Emily M. Levesque; Alicia M. Soderberg; Lisa J. Kewley; Edo Berger

doi:10.1088/0004-637X/725/1/1337

No correlation between host galaxy metallicity and gamma-ray energy release for long-duration gamma-ray bursts

Emily M. Levesque, Alicia M. Soderberg, Lisa J. Kewley, Edo Berger

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

We compare the redshifts, host galaxy metallicities, and isotropic (Eaγ_iso) and beaming-corrected (Eaγ ) gammaray energy release of 16 long-duration gamma-ray bursts (LGRBs) at z < 1. From this comparison, we find no statistically significant correlation between host metallicity and redshift, Eaγ_iso, or Eγ . These results are at odds with previous theoretical and observational predictions of an inverse correlation between gamma-ray energy release and host metallicity, as well as the standard predictions of metallicity-driven wind effects in stellar evolutionary models.We consider the implications that these results have for LGRB progenitor scenarios, and discuss our current understanding of the role that metallicity plays in the production of LGRBs.

Original language	English
Pages (from-to)	1337-1341
Number of pages	5
Journal	Astrophysical Journal
Volume	725
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/725/1/1337
Publication status	Published - 10 Dec 2010
Externally published	Yes

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title = "No correlation between host galaxy metallicity and gamma-ray energy release for long-duration gamma-ray bursts",

abstract = "We compare the redshifts, host galaxy metallicities, and isotropic (Eaγiso) and beaming-corrected (Eaγ ) gammaray energy release of 16 long-duration gamma-ray bursts (LGRBs) at z < 1. From this comparison, we find no statistically significant correlation between host metallicity and redshift, Eaγiso, or Eγ . These results are at odds with previous theoretical and observational predictions of an inverse correlation between gamma-ray energy release and host metallicity, as well as the standard predictions of metallicity-driven wind effects in stellar evolutionary models.We consider the implications that these results have for LGRB progenitor scenarios, and discuss our current understanding of the role that metallicity plays in the production of LGRBs.",

keywords = "Gamma-Ray burst:general",

author = "Levesque, \{Emily M.\} and Soderberg, \{Alicia M.\} and Kewley, \{Lisa J.\} and Edo Berger",

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doi = "10.1088/0004-637X/725/1/1337",

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TY - JOUR

T1 - No correlation between host galaxy metallicity and gamma-ray energy release for long-duration gamma-ray bursts

AU - Levesque, Emily M.

AU - Soderberg, Alicia M.

AU - Kewley, Lisa J.

AU - Berger, Edo

PY - 2010/12/10

Y1 - 2010/12/10

N2 - We compare the redshifts, host galaxy metallicities, and isotropic (Eaγiso) and beaming-corrected (Eaγ ) gammaray energy release of 16 long-duration gamma-ray bursts (LGRBs) at z < 1. From this comparison, we find no statistically significant correlation between host metallicity and redshift, Eaγiso, or Eγ . These results are at odds with previous theoretical and observational predictions of an inverse correlation between gamma-ray energy release and host metallicity, as well as the standard predictions of metallicity-driven wind effects in stellar evolutionary models.We consider the implications that these results have for LGRB progenitor scenarios, and discuss our current understanding of the role that metallicity plays in the production of LGRBs.

AB - We compare the redshifts, host galaxy metallicities, and isotropic (Eaγiso) and beaming-corrected (Eaγ ) gammaray energy release of 16 long-duration gamma-ray bursts (LGRBs) at z < 1. From this comparison, we find no statistically significant correlation between host metallicity and redshift, Eaγiso, or Eγ . These results are at odds with previous theoretical and observational predictions of an inverse correlation between gamma-ray energy release and host metallicity, as well as the standard predictions of metallicity-driven wind effects in stellar evolutionary models.We consider the implications that these results have for LGRB progenitor scenarios, and discuss our current understanding of the role that metallicity plays in the production of LGRBs.

KW - Gamma-Ray burst:general

UR - https://www.scopus.com/pages/publications/78650029973

U2 - 10.1088/0004-637X/725/1/1337

DO - 10.1088/0004-637X/725/1/1337

M3 - Article

SN - 0004-637X

VL - 725

SP - 1337

EP - 1341

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 1

ER -

No correlation between host galaxy metallicity and gamma-ray energy release for long-duration gamma-ray bursts

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