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Title: METALLICITY IN THE GRB 100316D/SN 2010bh HOST COMPLEX

Abstract

The recent long-duration GRB 100316D, associated with supernova SN 2010bh and detected by Swift, is one of the nearest gamma-ray burst (GRB)-supernovae (SNe) ever observed (z = 0.059). This provides us with a unique opportunity to study the explosion environment on {approx}kpc scale in relation to the host galaxy complex. Here we present spatially resolved spectrophotometry of the host galaxy, focusing on both the explosion site and the brightest star-forming regions. Using these data, we extract the spatial profiles of the relevant emission features (H{alpha}, H{beta}, [O III]{lambda}5007, and [N II]{lambda}6584) and use these profiles to examine variations in metallicity and star formation rate (SFR) as a function of position in the host galaxy. We conclude that GRB 100316D/SN2010bh occurred in a low-metallicity host galaxy, and that the GRB-SN explosion site corresponds to the region with the lowest metallicity and highest SFR sampled by our observations.

Authors:
 [1]; ; ;  [2]
  1. CASA, Department of Astrophysical and Planetary Sciences, University of Colorado 389-UCB, Boulder, CO 80309 (United States)
  2. Harvard-Smithsonian Center for Astrophysics, 60 Garden St., Cambridge, MA 02138 (United States)
Publication Date:
OSTI Identifier:
21587549
Resource Type:
Journal Article
Journal Name:
Astrophysical Journal
Additional Journal Information:
Journal Volume: 739; Journal Issue: 1; Other Information: DOI: 10.1088/0004-637X/739/1/23; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0004-637X
Country of Publication:
United States
Language:
English
Subject:
79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COSMIC GAMMA BURSTS; ELEMENT ABUNDANCE; EMISSION; EXPLOSIONS; GALAXIES; METALS; SPECTROPHOTOMETRY; SUPERNOVAE; ABUNDANCE; BINARY STARS; COSMIC RADIATION; ELEMENTS; ERUPTIVE VARIABLE STARS; IONIZING RADIATIONS; PRIMARY COSMIC RADIATION; RADIATIONS; STARS; VARIABLE STARS

Citation Formats

Levesque, Emily M., Berger, Edo, Soderberg, Alicia M., and Chornock, Ryan, E-mail: Emily.Levesque@colorado.edu. METALLICITY IN THE GRB 100316D/SN 2010bh HOST COMPLEX. United States: N. p., 2011. Web. doi:10.1088/0004-637X/739/1/23; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
Levesque, Emily M., Berger, Edo, Soderberg, Alicia M., & Chornock, Ryan, E-mail: Emily.Levesque@colorado.edu. METALLICITY IN THE GRB 100316D/SN 2010bh HOST COMPLEX. United States. doi:10.1088/0004-637X/739/1/23; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
Levesque, Emily M., Berger, Edo, Soderberg, Alicia M., and Chornock, Ryan, E-mail: Emily.Levesque@colorado.edu. Tue . "METALLICITY IN THE GRB 100316D/SN 2010bh HOST COMPLEX". United States. doi:10.1088/0004-637X/739/1/23; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA).
@article{osti_21587549,
title = {METALLICITY IN THE GRB 100316D/SN 2010bh HOST COMPLEX},
author = {Levesque, Emily M. and Berger, Edo and Soderberg, Alicia M. and Chornock, Ryan, E-mail: Emily.Levesque@colorado.edu},
abstractNote = {The recent long-duration GRB 100316D, associated with supernova SN 2010bh and detected by Swift, is one of the nearest gamma-ray burst (GRB)-supernovae (SNe) ever observed (z = 0.059). This provides us with a unique opportunity to study the explosion environment on {approx}kpc scale in relation to the host galaxy complex. Here we present spatially resolved spectrophotometry of the host galaxy, focusing on both the explosion site and the brightest star-forming regions. Using these data, we extract the spatial profiles of the relevant emission features (H{alpha}, H{beta}, [O III]{lambda}5007, and [N II]{lambda}6584) and use these profiles to examine variations in metallicity and star formation rate (SFR) as a function of position in the host galaxy. We conclude that GRB 100316D/SN2010bh occurred in a low-metallicity host galaxy, and that the GRB-SN explosion site corresponds to the region with the lowest metallicity and highest SFR sampled by our observations.},
doi = {10.1088/0004-637X/739/1/23; COUNTRY OF INPUT: INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA)},
journal = {Astrophysical Journal},
issn = {0004-637X},
number = 1,
volume = 739,
place = {United States},
year = {2011},
month = {9}
}