Abstract:
Aims. We aim at detecting and determining the properties of the host galaxy of the dark GRB 050223. Methods. We use VLT optical/NIR images coupled to Swift X-ray positioning, and optical spectra of the host galaxy to measure its properties. Results. We find a single galaxy within the Swift error box of GRB 050223. It is located at z = 0.584 and its luminosity is L ∼ 0.4 L*. Emission lines in the galaxy spectrum imply an intrinsic SFR > 7 M ⊙ yr-1, and a large extinction Av > 2 mag within it. We also detect absorption lines, which reveal an underlying stellar population with an age between 40 Myr and 1.5 Gyr. Conclusions. The identification of a host galaxy with atypical properties using only the X-ray transient suggests that a bias may be present in the former sample of host galaxies. Dust obscuration together with intrinsic faintness are the most probable causes for the darkness of this burst. © ESO 2006.
Registro:
Documento: |
Artículo
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Título: | GRB 050223: A dark GRB in a dusty starburst galaxy |
Autor: | Pellizza, L.J.; Duc, P.-A.; Le Floc'h, E.; Mirabel, I.F.; Antonelli, L.A.; Campana, S.; Chincarini, G.; Cimatti, A.; Covino, S.; Della Valle, M.; Fiore, F.; Fugazza, D.; Giommi, P.; Goldoni, P.; Israel, G.L.; Molinari, E.; Moretti, A.; Piro, L.; Saracco, P.; Stella, L.; Tagliaferri, G.; Vietri, M. |
Filiación: | Laboratoire AIM (UMR 7158), Service d'Astrophysique, Bât. 709, 91191 Gif-sur-Yvette, France Instituto de Astronomía y Física Del Espacio (CONICET/UBA), C.C. 67, Suc. 28, 1428 Buenos Aires, Argentina Steward Observatory, University of Arizona, 933 North Cherry Avenue, Tucson, AZ 85721, United States Chercheur Associé, Observatoire de Paris, 75014 Paris, France European Southern Observatory, Alonso de Córdova 3107, Santiago 19, Chile CEA Saclay, France INAF, Osservatorio Astronomico di Roma, via di Frascati 33, 00040 Monteporzio Catone (Roma), Italy INAF, Osservatorio Astronomico di Brera, via E. Bianchi 46, 23807 Merate (LC), Italy Università degli Studi di Milano-Bicocca, Dipartimento di Fisica, piazza delle Scienze 3, 20126 Milano, Italy INAF, Osservatorio Astrofisico di Arcetri, largo E. Fermi 5, 50125 Firenze, Italy Agenzia Spaziale Italiana, Science Data Center, via di Villa Grazioli, 00198 Roma, Italy Laboratoire Astroparticule et Cosmologie, UMR 7164, 11 Place Marcelin Berthelot, 75231 Paris Cedex 05, France INAF-IASF, Sezione di Roma, via Fosso del Cavaliere 100, 00133 Roma, Italy Scuola Normale Superiore, piazza dei Cavalieri 7, 56126 Pisa, Italy
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Palabras clave: | Galaxies; Gamma rays: bursts; Starburst; Astrophysics; Dust; Luminous materials; Space research; X ray analysis; Dusty starburst galaxy; Emission lines; Gamma rays: bursts; Optical spectra; Galaxies |
Año: | 2006
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Volumen: | 459
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Número: | 1
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Página de inicio: | L5
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Página de fin: | L8
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DOI: |
http://dx.doi.org/10.1051/0004-6361:20066015 |
Título revista: | Astronomy and Astrophysics
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Título revista abreviado: | Astron. Astrophys.
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ISSN: | 00046361
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CODEN: | AAEJA
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Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00046361_v459_n1_pL5_Pellizza |
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Citas:
---------- APA ----------
Pellizza, L.J., Duc, P.-A., Le Floc'h, E., Mirabel, I.F., Antonelli, L.A., Campana, S., Chincarini, G.,..., Vietri, M.
(2006)
. GRB 050223: A dark GRB in a dusty starburst galaxy. Astronomy and Astrophysics, 459(1), L5-L8.
http://dx.doi.org/10.1051/0004-6361:20066015---------- CHICAGO ----------
Pellizza, L.J., Duc, P.-A., Le Floc'h, E., Mirabel, I.F., Antonelli, L.A., Campana, S., et al.
"GRB 050223: A dark GRB in a dusty starburst galaxy"
. Astronomy and Astrophysics 459, no. 1
(2006) : L5-L8.
http://dx.doi.org/10.1051/0004-6361:20066015---------- MLA ----------
Pellizza, L.J., Duc, P.-A., Le Floc'h, E., Mirabel, I.F., Antonelli, L.A., Campana, S., et al.
"GRB 050223: A dark GRB in a dusty starburst galaxy"
. Astronomy and Astrophysics, vol. 459, no. 1, 2006, pp. L5-L8.
http://dx.doi.org/10.1051/0004-6361:20066015---------- VANCOUVER ----------
Pellizza, L.J., Duc, P.-A., Le Floc'h, E., Mirabel, I.F., Antonelli, L.A., Campana, S., et al. GRB 050223: A dark GRB in a dusty starburst galaxy. Astron. Astrophys. 2006;459(1):L5-L8.
http://dx.doi.org/10.1051/0004-6361:20066015