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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52 Citationer (Scopus)

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.

Originalsprog	Engelsk
Tidsskrift	Astrophysical Journal
Vol/bind	785
Udgave nummer	2
Sider (fra-til)	150-161
Antal sider	12
ISSN	0004-637X
DOI	https://doi.org/10.1088/0004-637X/785/2/150
Status	Udgivet - 20 apr. 2014

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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

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, bind 785, nr. 2, s. 150-161. https://doi.org/10.1088/0004-637X/785/2/150

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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 (DTM), and extinction of the GRB host galaxy at z = 5.0. The host absorption system is a damped Lyα absorber with a very large neutral hydrogen column density of 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 DTM that is consistent with being equal to or lower than typical values in the Local Group.",

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T1 - The metallicity and dust content of a redshift 5 gamma-ray burst host galaxy

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

Y1 - 2014/4/20

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 (DTM), and extinction of the GRB host galaxy at z = 5.0. The host absorption system is a damped Lyα absorber with a very large neutral hydrogen column density of 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 DTM that 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 (DTM), and extinction of the GRB host galaxy at z = 5.0. The host absorption system is a damped Lyα absorber with a very large neutral hydrogen column density of 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 DTM that is consistent with being equal to or lower than typical values in the Local Group.

KW - astro-ph.CO

U2 - 10.1088/0004-637X/785/2/150

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

M3 - Journal article

SN - 0004-637X

VL - 785

SP - 150

EP - 161

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

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

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