Properties of a gamma-ray burst host galaxy at z similar to 5
We describe the properties of the host galaxy of the gamma-ray burst GRB 060510B based on a spectrum of the burst afterglow obtained with the Gemini North 8 m telescope. The galaxy lies at a redshift of z = 4.941, making it the fourth highest spectroscopically identified burst host. However, it is t...
| Main Authors: | , , , , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
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Institute of Physics Publishing
2007
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| _version_ | 1826296426236215296 |
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| author | Price, P Songaila, A Cowie, L Burnell, J Berger, E Cucchiara, A Fox, D Hook, I Kulkarni, SR Penprase, B Roth, K Schmidt, B |
| author_facet | Price, P Songaila, A Cowie, L Burnell, J Berger, E Cucchiara, A Fox, D Hook, I Kulkarni, SR Penprase, B Roth, K Schmidt, B |
| author_sort | Price, P |
| collection | OXFORD |
| description | We describe the properties of the host galaxy of the gamma-ray burst GRB 060510B based on a spectrum of the burst afterglow obtained with the Gemini North 8 m telescope. The galaxy lies at a redshift of z = 4.941, making it the fourth highest spectroscopically identified burst host. However, it is the second highest redshift galaxy for which the quality of the spectrum permits a detailed metallicity analysis. The neutral hydrogen column density has a logarithmic value of 21.0-21.2 cm-2, and the weak metal lines of Ni, S, and Fe show that the metallicity is in excess of a tenth of solar, which is far above the metallicities in damped Lya absorbers at high redshift. The tightest constraint is from the Fe lines, which place [Fe/H] in excess of -0.8. We argue that the results suggest that metallicity bias could be a serious obstacle to inferring star formation from the GRB population, and we consider how future higher quality measurements could be used to resolve this issue. © 2007 The American Astronomical Society. All rights reserved. |
| first_indexed | 2024-03-07T04:16:09Z |
| format | Journal article |
| id | oxford-uuid:c97e701d-3a18-4ca2-88ef-dae87b28e894 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T04:16:09Z |
| publishDate | 2007 |
| publisher | Institute of Physics Publishing |
| record_format | dspace |
| spelling | oxford-uuid:c97e701d-3a18-4ca2-88ef-dae87b28e8942022-03-27T06:59:32ZProperties of a gamma-ray burst host galaxy at z similar to 5Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:c97e701d-3a18-4ca2-88ef-dae87b28e894EnglishSymplectic Elements at OxfordInstitute of Physics Publishing2007Price, PSongaila, ACowie, LBurnell, JBerger, ECucchiara, AFox, DHook, IKulkarni, SRPenprase, BRoth, KSchmidt, BWe describe the properties of the host galaxy of the gamma-ray burst GRB 060510B based on a spectrum of the burst afterglow obtained with the Gemini North 8 m telescope. The galaxy lies at a redshift of z = 4.941, making it the fourth highest spectroscopically identified burst host. However, it is the second highest redshift galaxy for which the quality of the spectrum permits a detailed metallicity analysis. The neutral hydrogen column density has a logarithmic value of 21.0-21.2 cm-2, and the weak metal lines of Ni, S, and Fe show that the metallicity is in excess of a tenth of solar, which is far above the metallicities in damped Lya absorbers at high redshift. The tightest constraint is from the Fe lines, which place [Fe/H] in excess of -0.8. We argue that the results suggest that metallicity bias could be a serious obstacle to inferring star formation from the GRB population, and we consider how future higher quality measurements could be used to resolve this issue. © 2007 The American Astronomical Society. All rights reserved. |
| spellingShingle | Price, P Songaila, A Cowie, L Burnell, J Berger, E Cucchiara, A Fox, D Hook, I Kulkarni, SR Penprase, B Roth, K Schmidt, B Properties of a gamma-ray burst host galaxy at z similar to 5 |
| title | Properties of a gamma-ray burst host galaxy at z similar to 5 |
| title_full | Properties of a gamma-ray burst host galaxy at z similar to 5 |
| title_fullStr | Properties of a gamma-ray burst host galaxy at z similar to 5 |
| title_full_unstemmed | Properties of a gamma-ray burst host galaxy at z similar to 5 |
| title_short | Properties of a gamma-ray burst host galaxy at z similar to 5 |
| title_sort | properties of a gamma ray burst host galaxy at z similar to 5 |
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