Spectro-photometric study of the GRB 030329 host galaxy

Gorosabel, J. and Pérez-Ramírez, D. and Sollerman, J. and de Ugarte Postigo, A. and Fynbo, J. P. U. and Castro-Tirado, A. J. and Jakobsson, P. and Christensen, L. and Hjorth, J. and Jóhannesson, G. and Guziy, S. and Castro Cerón, J. M. and Björnsson, G. and Sokolov, V. V. and Fatkhullin, T. A. and Nilsson, K. (2005) Spectro-photometric study of the GRB 030329 host galaxy. Il nuovo cimento C, 28 (4\5). pp. 673-676. ISSN 1826-9885

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In this study we present optical/near-infrared (NIR) broad band photometry and optical spectroscopic observations of the GRB 030329 host galaxy. The Spectral Energy Distribution (SED) of the host is consistent with a starburst galaxy template with a dominant stellar population age of ∼ 150 Myr and an extinction Av ∼ 0.6. Analysis of the spectral emission lines shows that the host is likely a low metallicity galaxy. Two independent diagnostics, based on the restframe UV continuum and the [OII] line flux, provide a consistent unextincted star formation rate of SFR∼ 0.6M� yr−1. The low absolute magnitude of the host (MB ∼ −16.5) implies a high specific star formation rate value, SSFR∼=34M� yr−1(L/L�)−1.

Item Type: Article
Additional Information: Paper presented at the “4th Workshop on Gamma-Ray Burst in the Afterglow Era”, Rome, October 18-22, 2004. Based on observations carried out with the Nordic Optical Telescope, operated on the island of La Palma jointly by Denmark, Finland, Iceland, Norway, and Sweden, in the Spanish Observatorio del Roque de los Muchachos of the Instituto de Astrofısica de Canarias. Based on data taken at the 2.2-m and 3.5-m telescopes of the Centro Astron´omico Hispano Aleman de Calar Alto, operated by the Max Planck institute of Heidelberg and Centro Superior de Investigaciones Cientıficas. The spectral observations were obtained at the European Southern Observatory, Cerro Paranal (Chile), under the Director’s Discretionary Time programme 271.D-5006(A).
Uncontrolled Keywords: Photography and photometry ; Spectroscopy and spectrophotometry ; γ-ray sources; γ-ray bursts
Subjects: 500 Scienze naturali e Matematica > 520 Astronomia e scienze connesse
Depositing User: Marina Spanti
Date Deposited: 16 Mar 2020 18:00
Last Modified: 16 Mar 2020 18:00
URI: http://eprints.bice.rm.cnr.it/id/eprint/15838

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