We revisit the host galaxy of GRB031203 using a set of spectra obtained with VLT. Assuming a galactic color excess E(B - V) = 0.72 mag in the direction of the burst, we derive an internal extinction of E(B - V)HG ≈ 0.4 mag. After correcting for reddening, we find an electronic density of (156 ± 21) cm-3 and a temperature of (12443 ± 95) K. With an ISM dominated by photo-ionization, we estimate a metallicity of 12 + log[O/H] = 8.12 ± 0.04 and a Star Formation Rate (SFR) of (12.3 ± 2.1) M ⊙ y-1. This galaxy does not host a clearly detectable population of WR stars.
ASJC Scopus subject areas
- Physics and Astronomy(all)