Metallicity in the GRB 100316D/SN 2010bh host complex

Emily M. Levesque; Edo Berger; Alicia M. Soderberg; Ryan Chornock

doi:10.1088/0004-637X/739/1/23

Metallicity in the GRB 100316D/SN 2010bh host complex

Emily M. Levesque^*, Edo Berger, Alicia M. Soderberg, Ryan Chornock

^*Corresponding author for this work

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

56 Scopus citations

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 ∼ 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 (Hα, Hβ, [O III]λ5007, and [N II]λ6584) 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.

Original language	English (US)
Article number	23
Journal	Astrophysical Journal
Volume	739
Issue number	1
DOIs	https://doi.org/10.1088/0004-637X/739/1/23
State	Published - Sep 20 2011
Externally published	Yes

Keywords

galaxies: abundances
gamma-ray burst: individual (GRB 100316D)

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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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 ∼ 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 (Hα, Hβ, [O III]λ5007, and [N II]λ6584) 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.",

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author = "Levesque, {Emily M.} and Edo Berger and Soderberg, {Alicia M.} and Ryan Chornock",

year = "2011",

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doi = "10.1088/0004-637X/739/1/23",

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AU - Levesque, Emily M.

AU - Berger, Edo

AU - Soderberg, Alicia M.

AU - Chornock, Ryan

PY - 2011/9/20

Y1 - 2011/9/20

N2 - 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 ∼ 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 (Hα, Hβ, [O III]λ5007, and [N II]λ6584) 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.

AB - 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 ∼ 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 (Hα, Hβ, [O III]λ5007, and [N II]λ6584) 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.

KW - galaxies: abundances

KW - gamma-ray burst: individual (GRB 100316D)

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ER -

Metallicity in the GRB 100316D/SN 2010bh host complex

Abstract

Keywords

ASJC Scopus subject areas

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