GRB 021004 host galaxy and environment with X-shooter

S.D. Vergani (1, 2, 3, 4) , S. Piranomonte (5) , P. Petitjean , H. Flores (2) , P. Goldoni (6) , M. Rodrigues , F. Hammer (2) , S. Covino

1 APC (UMR_7164) - AstroParticule et Cosmologie
2 GEPI - Galaxies, Etoiles, Physique, Instrumentation
3 IAP - Institut d'Astrophysique de Paris
4 OAB - INAF - Osservatorio Astronomico di Brera
5 OAR - INAF - Osservatorio Astronomico di Roma
6 APC - AHE - APC - Astrophysique des Hautes Energies

We report preliminary results of the observation of the GRB 021004 host galaxy and field obtained with the new VLT/X-shooter spectrograph. Thanks to the X-shooter wide spectral range we could detect many emission lines associated to the GRB host at z=2.33102. Moreover we identify [O III] λλ 4959, 5007 Å emission lines at z=2.33184 associated with a close-by galaxy possibly interacting with the GRB host. We do not detect any counterpart of the foreground absorbers found in the afterglow spectra of GRB 021004.

Domaines: Phénomènes cosmiques de haute energie [astro-ph.HE]; Phénomènes cosmiques de haute energie [astro-ph.HE]

S.D. Vergani, S. Piranomonte, P. Petitjean, H. Flores, P. Goldoni, et al.. GRB 021004 host galaxy and environment with X-shooter. Astronomical Notes / Astronomische Nachrichten, 2011, 332, pp.292-294. ⟨10.1002/asna.201111538⟩. ⟨hal-00708872⟩