The blue host galaxy of the red GRB 000418

J. Gorosabel; S. Klose; L. Christensen; J. P.U. Fynbo; J. Hjorth; J. Greiner; N. Tanvir; B. L. Jensen; H. Pedersen; S. T. Holland; N. Lund; A. O. Jaunsen; J. M. Castro Cerón; A. J. Castro-Tirado; A. Fruchter; E. Pian; P. M. Vreeswijk; I. Burud; F. Frontera; L. Kaper; C. Kouveliotou; N. Masetti; E. Palazzi; J. Rhoads; E. Rol; I. Salamanca; R. A.M.J. Wijers; E. Van Den Heuvel

doi:10.1051/0004-6361:20031047

The blue host galaxy of the red GRB 000418

J. Gorosabel, S. Klose, L. Christensen, J. P.U. Fynbo, J. Hjorth, J. Greiner, N. Tanvir, B. L. Jensen, H. Pedersen, S. T. Holland, N. Lund, A. O. Jaunsen, J. M. Castro Cerón, A. J. Castro-Tirado, A. Fruchter, E. Pian, P. M. Vreeswijk, I. Burud, F. Frontera, L. KaperC. Kouveliotou, N. Masetti, E. Palazzi, J. Rhoads, E. Rol, I. Salamanca, R. A.M.J. Wijers, E. Van Den Heuvel

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37 Scopus citations

Abstract

We report on multi-band (U BVRIZJ_sK_s) observations of the host galaxy of the April 18, 2000 gamma-ray burst. The Spectral Energy Distribution (SED) is analysed by fitting empirical and synthetic spectral templates. We find that: (i) the best SED fit is obtained with a starburst template, (ii) the photometric redshift is consistent with the spectroscopic redshift, (iii) the colours of the host are inconsistent with an old stellar population, and (iv) the global extinction is constrained to be in the range A_v = 0.12-0.61 mag. The derived global extinction agrees with the one reported for the afterglow (A_v = 0.4-0.9 mag), suggesting a homogeneous distribution of the interstellar medium (ISM) in the host galaxy. These findings are supplemented by morphological information from Hubble Space Telescope (HST) imaging: the surface brightness profile is smooth, symmetric and compact with no underlying structures (like dust lanes, spiral arms or disks). A natural scenario which accounts of all the above results is a nuclear starburst that harbours a young population of stars from which the GRB originated.

Original language	English (US)
Pages (from-to)	123-133
Number of pages	11
Journal	Astronomy and Astrophysics
Volume	409
Issue number	1
DOIs	https://doi.org/10.1051/0004-6361:20031047
State	Published - Oct 2003
Externally published	Yes

Keywords

Galaxies: fundamental parameters
Gamma rays: bursts
Techniques: photometric

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.1051/0004-6361:20031047

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Gorosabel, J., Klose, S., Christensen, L., Fynbo, J. P. U., Hjorth, J., Greiner, J., Tanvir, N., Jensen, B. L., Pedersen, H., Holland, S. T., Lund, N., Jaunsen, A. O., Castro Cerón, J. M., Castro-Tirado, A. J., Fruchter, A., Pian, E., Vreeswijk, P. M., Burud, I., Frontera, F., ... Van Den Heuvel, E. (2003). The blue host galaxy of the red GRB 000418. Astronomy and Astrophysics, 409(1), 123-133. https://doi.org/10.1051/0004-6361:20031047

Gorosabel, J, Klose, S, Christensen, L, Fynbo, JPU, Hjorth, J, Greiner, J, Tanvir, N, Jensen, BL, Pedersen, H, Holland, ST, Lund, N, Jaunsen, AO, Castro Cerón, JM, Castro-Tirado, AJ, Fruchter, A, Pian, E, Vreeswijk, PM, Burud, I, Frontera, F, Kaper, L, Kouveliotou, C, Masetti, N, Palazzi, E, Rhoads, J, Rol, E, Salamanca, I, Wijers, RAMJ & Van Den Heuvel, E 2003, 'The blue host galaxy of the red GRB 000418', Astronomy and Astrophysics, vol. 409, no. 1, pp. 123-133. https://doi.org/10.1051/0004-6361:20031047

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title = "The blue host galaxy of the red GRB 000418",

abstract = "We report on multi-band (U BVRIZJsKs) observations of the host galaxy of the April 18, 2000 gamma-ray burst. The Spectral Energy Distribution (SED) is analysed by fitting empirical and synthetic spectral templates. We find that: (i) the best SED fit is obtained with a starburst template, (ii) the photometric redshift is consistent with the spectroscopic redshift, (iii) the colours of the host are inconsistent with an old stellar population, and (iv) the global extinction is constrained to be in the range Av = 0.12-0.61 mag. The derived global extinction agrees with the one reported for the afterglow (Av = 0.4-0.9 mag), suggesting a homogeneous distribution of the interstellar medium (ISM) in the host galaxy. These findings are supplemented by morphological information from Hubble Space Telescope (HST) imaging: the surface brightness profile is smooth, symmetric and compact with no underlying structures (like dust lanes, spiral arms or disks). A natural scenario which accounts of all the above results is a nuclear starburst that harbours a young population of stars from which the GRB originated.",

keywords = "Galaxies: fundamental parameters, Gamma rays: bursts, Techniques: photometric",

author = "J. Gorosabel and S. Klose and L. Christensen and Fynbo, {J. P.U.} and J. Hjorth and J. Greiner and N. Tanvir and Jensen, {B. L.} and H. Pedersen and Holland, {S. T.} and N. Lund and Jaunsen, {A. O.} and {Castro Cer{\'o}n}, {J. M.} and Castro-Tirado, {A. J.} and A. Fruchter and E. Pian and Vreeswijk, {P. M.} and I. Burud and F. Frontera and L. Kaper and C. Kouveliotou and N. Masetti and E. Palazzi and J. Rhoads and E. Rol and I. Salamanca and Wijers, {R. A.M.J.} and {Van Den Heuvel}, E.",

year = "2003",

month = oct,

doi = "10.1051/0004-6361:20031047",

language = "English (US)",

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T1 - The blue host galaxy of the red GRB 000418

AU - Gorosabel, J.

AU - Klose, S.

AU - Christensen, L.

AU - Fynbo, J. P.U.

AU - Hjorth, J.

AU - Greiner, J.

AU - Tanvir, N.

AU - Jensen, B. L.

AU - Pedersen, H.

AU - Holland, S. T.

AU - Lund, N.

AU - Jaunsen, A. O.

AU - Castro Cerón, J. M.

AU - Castro-Tirado, A. J.

AU - Fruchter, A.

AU - Pian, E.

AU - Vreeswijk, P. M.

AU - Burud, I.

AU - Frontera, F.

AU - Kaper, L.

AU - Kouveliotou, C.

AU - Masetti, N.

AU - Palazzi, E.

AU - Rhoads, J.

AU - Rol, E.

AU - Salamanca, I.

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

AU - Van Den Heuvel, E.

PY - 2003/10

Y1 - 2003/10

N2 - We report on multi-band (U BVRIZJsKs) observations of the host galaxy of the April 18, 2000 gamma-ray burst. The Spectral Energy Distribution (SED) is analysed by fitting empirical and synthetic spectral templates. We find that: (i) the best SED fit is obtained with a starburst template, (ii) the photometric redshift is consistent with the spectroscopic redshift, (iii) the colours of the host are inconsistent with an old stellar population, and (iv) the global extinction is constrained to be in the range Av = 0.12-0.61 mag. The derived global extinction agrees with the one reported for the afterglow (Av = 0.4-0.9 mag), suggesting a homogeneous distribution of the interstellar medium (ISM) in the host galaxy. These findings are supplemented by morphological information from Hubble Space Telescope (HST) imaging: the surface brightness profile is smooth, symmetric and compact with no underlying structures (like dust lanes, spiral arms or disks). A natural scenario which accounts of all the above results is a nuclear starburst that harbours a young population of stars from which the GRB originated.

AB - We report on multi-band (U BVRIZJsKs) observations of the host galaxy of the April 18, 2000 gamma-ray burst. The Spectral Energy Distribution (SED) is analysed by fitting empirical and synthetic spectral templates. We find that: (i) the best SED fit is obtained with a starburst template, (ii) the photometric redshift is consistent with the spectroscopic redshift, (iii) the colours of the host are inconsistent with an old stellar population, and (iv) the global extinction is constrained to be in the range Av = 0.12-0.61 mag. The derived global extinction agrees with the one reported for the afterglow (Av = 0.4-0.9 mag), suggesting a homogeneous distribution of the interstellar medium (ISM) in the host galaxy. These findings are supplemented by morphological information from Hubble Space Telescope (HST) imaging: the surface brightness profile is smooth, symmetric and compact with no underlying structures (like dust lanes, spiral arms or disks). A natural scenario which accounts of all the above results is a nuclear starburst that harbours a young population of stars from which the GRB originated.

KW - Galaxies: fundamental parameters

KW - Gamma rays: bursts

KW - Techniques: photometric

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EP - 133

JO - Astronomy and Astrophysics

JF - Astronomy and Astrophysics

IS - 1

ER -

The blue host galaxy of the red GRB 000418

Abstract

Keywords

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