The metallicity and dust content of a redshift 5 gamma-ray burst host galaxy

M. Sparre; O. E. Hartoog; T. Krühler; Johan Peter Uldall Fynbo; D. J. Watson; K. Wiersema; V. D'Elia; T. Zafar; P. M. J. Afonso; S. Covino; A. de Ugarte Postigo; H. Flores; P. Goldoni; J. Greiner; J. Hjorth; P. Jakobsson; L. Kaper; S. Klose; A. J. Levan; D. Malesani; B. Milvang-Jensen; M. Nardini; S. Piranomonte; J. Sollerman; R. Sánchez-Ramírez; S. Schulze; N. R. Tanvir; S. D. Vergani; R. A. M. J. Wijers

doi:10.1088/0004-637X/785/2/150

The metallicity and dust content of a redshift 5 gamma-ray burst host galaxy

M. Sparre, O. E. Hartoog, T. Krühler, Johan Peter Uldall Fynbo, D. J. Watson, K. Wiersema, V. D'Elia, T. Zafar, P. M. J. Afonso, S. Covino, A. de Ugarte Postigo, H. Flores, P. Goldoni, J. Greiner, J. Hjorth, P. Jakobsson, L. Kaper, S. Klose, A. J. Levan, D. MalesaniB. Milvang-Jensen, M. Nardini, S. Piranomonte, J. Sollerman, R. Sánchez-Ramírez, S. Schulze, N. R. Tanvir, S. D. Vergani, R. A. M. J. Wijers

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Research output: Contribution to journal › Journal article › Research › peer-review

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Abstract

Observations of the afterglows of long gamma-ray bursts (GRBs) allow the study of star-forming galaxies across most of cosmic history. Here we present observations of GRB 111008A from which we can measure metallicity, chemical abundance patterns, dust-to-metals ratio and extinction of the GRB host galaxy at z=5.0. The host absorption system is a damped Lyman-alpha absorber (DLA) with a very large neutral hydrogen column density of log N(HI)/cm^(-2) = 22.30 +/- 0.06, and a metallicity of [S/H]= -1.70 +/- 0.10. It is the highest redshift GRB with such a precise metallicity measurement. The presence of fine-structure lines confirms the z=5.0 system as the GRB host galaxy, and makes this the highest redshift where Fe II fine-structure lines have been detected. The afterglow is mildly reddened with A_V = 0.11 +/- 0.04 mag, and the host galaxy has a dust-to-metals ratio which is consistent with being equal to or lower than typical values in the Local Group.

Original language	English
Journal	Astrophysical Journal
Volume	785
Issue number	2
Pages (from-to)	150-161
Number of pages	12
ISSN	0004-637X
DOIs	https://doi.org/10.1088/0004-637X/785/2/150
Publication status	Published - 20 Apr 2014

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10.1088/0004-637X/785/2/150

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Sparre, M., Hartoog, O. E., Krühler, T., Fynbo, J. P. U., Watson, D. J., Wiersema, K., D'Elia, V., Zafar, T., Afonso, P. M. J., Covino, S., Postigo, A. D. U., Flores, H., Goldoni, P., Greiner, J., Hjorth, J., Jakobsson, P., Kaper, L., Klose, S., Levan, A. J., ... Wijers, R. A. M. J. (2014). The metallicity and dust content of a redshift 5 gamma-ray burst host galaxy. Astrophysical Journal, 785(2), 150-161. https://doi.org/10.1088/0004-637X/785/2/150

The metallicity and dust content of a redshift 5 gamma-ray burst host galaxy. / Sparre, M.; Hartoog, O. E.; Krühler, T.; Fynbo, Johan Peter Uldall ; Watson, D. J.; Wiersema, K.; D'Elia, V.; Zafar, T.; Afonso, P. M. J.; Covino, S.; Postigo, A. de Ugarte; Flores, H.; Goldoni, P.; Greiner, J.; Hjorth, J.; Jakobsson, P.; Kaper, L.; Klose, S.; Levan, A. J.; Malesani, D.; Milvang-Jensen, B.; Nardini, M.; Piranomonte, S.; Sollerman, J.; Sánchez-Ramírez, R.; Schulze, S.; Tanvir, N. R.; Vergani, S. D.; Wijers, R. A. M. J.

In: Astrophysical Journal, Vol. 785, No. 2, 20.04.2014, p. 150-161.

Research output: Contribution to journal › Journal article › Research › peer-review

Sparre, M, Hartoog, OE, Krühler, T, Fynbo, JPU , Watson, DJ, Wiersema, K, D'Elia, V, Zafar, T, Afonso, PMJ, Covino, S, Postigo, ADU, Flores, H, Goldoni, P, Greiner, J, Hjorth, J, Jakobsson, P, Kaper, L, Klose, S, Levan, AJ, Malesani, D, Milvang-Jensen, B, Nardini, M, Piranomonte, S, Sollerman, J, Sánchez-Ramírez, R, Schulze, S, Tanvir, NR, Vergani, SD & Wijers, RAMJ 2014, 'The metallicity and dust content of a redshift 5 gamma-ray burst host galaxy', Astrophysical Journal, vol. 785, no. 2, pp. 150-161. https://doi.org/10.1088/0004-637X/785/2/150

Sparre, M. ; Hartoog, O. E. ; Krühler, T. ; Fynbo, Johan Peter Uldall ; Watson, D. J. ; Wiersema, K. ; D'Elia, V. ; Zafar, T. ; Afonso, P. M. J. ; Covino, S. ; Postigo, A. de Ugarte ; Flores, H. ; Goldoni, P. ; Greiner, J. ; Hjorth, J. ; Jakobsson, P. ; Kaper, L. ; Klose, S. ; Levan, A. J. ; Malesani, D. ; Milvang-Jensen, B. ; Nardini, M. ; Piranomonte, S. ; Sollerman, J. ; Sánchez-Ramírez, R. ; Schulze, S. ; Tanvir, N. R. ; Vergani, S. D. ; Wijers, R. A. M. J. / The metallicity and dust content of a redshift 5 gamma-ray burst host galaxy. In: Astrophysical Journal. 2014 ; Vol. 785, No. 2. pp. 150-161.

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abstract = "Observations of the afterglows of long gamma-ray bursts (GRBs) allow the study of star-forming galaxies across most of cosmic history. Here we present observations of GRB 111008A from which we can measure metallicity, chemical abundance patterns, dust-to-metals ratio and extinction of the GRB host galaxy at z=5.0. The host absorption system is a damped Lyman-alpha absorber (DLA) with a very large neutral hydrogen column density of log N(HI)/cm^(-2) = 22.30 +/- 0.06, and a metallicity of [S/H]= -1.70 +/- 0.10. It is the highest redshift GRB with such a precise metallicity measurement. The presence of fine-structure lines confirms the z=5.0 system as the GRB host galaxy, and makes this the highest redshift where Fe II fine-structure lines have been detected. The afterglow is mildly reddened with A_V = 0.11 +/- 0.04 mag, and the host galaxy has a dust-to-metals ratio which is consistent with being equal to or lower than typical values in the Local Group.",

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AU - Sparre, M.

AU - Hartoog, O. E.

AU - Krühler, T.

AU - Fynbo, Johan Peter Uldall

AU - Watson, D. J.

AU - Wiersema, K.

AU - D'Elia, V.

AU - Zafar, T.

AU - Afonso, P. M. J.

AU - Covino, S.

AU - Postigo, A. de Ugarte

AU - Flores, H.

AU - Goldoni, P.

AU - Greiner, J.

AU - Hjorth, J.

AU - Jakobsson, P.

AU - Kaper, L.

AU - Klose, S.

AU - Levan, A. J.

AU - Malesani, D.

AU - Milvang-Jensen, B.

AU - Nardini, M.

AU - Piranomonte, S.

AU - Sollerman, J.

AU - Sánchez-Ramírez, R.

AU - Schulze, S.

AU - Tanvir, N. R.

AU - Vergani, S. D.

AU - Wijers, R. A. M. J.

PY - 2014/4/20

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N2 - Observations of the afterglows of long gamma-ray bursts (GRBs) allow the study of star-forming galaxies across most of cosmic history. Here we present observations of GRB 111008A from which we can measure metallicity, chemical abundance patterns, dust-to-metals ratio and extinction of the GRB host galaxy at z=5.0. The host absorption system is a damped Lyman-alpha absorber (DLA) with a very large neutral hydrogen column density of log N(HI)/cm^(-2) = 22.30 +/- 0.06, and a metallicity of [S/H]= -1.70 +/- 0.10. It is the highest redshift GRB with such a precise metallicity measurement. The presence of fine-structure lines confirms the z=5.0 system as the GRB host galaxy, and makes this the highest redshift where Fe II fine-structure lines have been detected. The afterglow is mildly reddened with A_V = 0.11 +/- 0.04 mag, and the host galaxy has a dust-to-metals ratio which is consistent with being equal to or lower than typical values in the Local Group.

AB - Observations of the afterglows of long gamma-ray bursts (GRBs) allow the study of star-forming galaxies across most of cosmic history. Here we present observations of GRB 111008A from which we can measure metallicity, chemical abundance patterns, dust-to-metals ratio and extinction of the GRB host galaxy at z=5.0. The host absorption system is a damped Lyman-alpha absorber (DLA) with a very large neutral hydrogen column density of log N(HI)/cm^(-2) = 22.30 +/- 0.06, and a metallicity of [S/H]= -1.70 +/- 0.10. It is the highest redshift GRB with such a precise metallicity measurement. The presence of fine-structure lines confirms the z=5.0 system as the GRB host galaxy, and makes this the highest redshift where Fe II fine-structure lines have been detected. The afterglow is mildly reddened with A_V = 0.11 +/- 0.04 mag, and the host galaxy has a dust-to-metals ratio which is consistent with being equal to or lower than typical values in the Local Group.

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