2005/07/20 by J. Gorosabel, D. Pérez-Ramírez, J. Sollerman +17 · 6 citations
Physics and Astronomy · #Astrophysics and Star Formation Studies #Gamma-ray bursts and supernovae #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1051/0004-6361:20052768
published as Astron.Astrophys. 444 (2005) 711-721 · 11 pages, 4 figures. Accepted for publication in A&A
arxiv created 2005/07/20 · openalex publication_date 2005/12/01 · arxiv updated 2009/12/01 · openalex created_date 2020/11/23 · openalex updated_date 2026/08/01
We present broad band photometry and spectroscopic observations of the host galaxy of GRB 030329. Analysis of the spectral emission lines shows that the host is likely a low metallicity galaxy (). The spectral energy distribution (SED) constructed with the photometric points has been fitted using synthetic and observational templates. The best SED fit is obtained with a starburst template with an age of ~150 Myr and an extinction . We find that the GRB 030329 host galaxy is a subluminous galaxy () with a stellar mass of ≳ . Three independent diagnostics, based on the restframe UV continuum, the [], and the Balmer emission lines, provide a consistent unextinguished star formation rate of yr -1 , implying a high unextinguished specific star formation rate (~ yr). We estimate that the unextinguished specific star formation rate of the GRB 030329 host is higher than ~93.5% of the galaxies at a similar redshift.