2008A&A...492..775P


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.04CEST21:14:51

2008A&A...492..775P - Astronomy and Astrophysics, volume 492, 775-785 (2008/12-4)

Probing the complex environments of GRB host galaxies and intervening systems: high resolution spectroscopy of GRB050922C.

PIRANOMONTE S., WARD P.A., FIORE F., VERGANI S.D., D'ELIA V., KRONGOLD Y., NICASTRO F., MEURS E.J.A., CHINCARINI G., COVINO S., DELLA VALLE M., FUGAZZA D., NORCI L., SBORDONE L., STELLA L., TAGLIAFERRI G., BURROWS D.N., GEHRELS N., GOLDONI P., MALESANI D., MIRABEL I.F., PELLIZZA L.J. and PERNA R.

Abstract (from CDS):

The aim of this paper is to investigate the environment of gamma ray bursts (GRBs) and the interstellar matter of their host galaxies. To this purpose we use high resolution spectroscopic observations of the afterglow of GRB050922C, obtained with UVES/VLT ∼3.5h after the GRB event. We found that, as for most high resolution spectra of GRBs, the spectrum of the afterglow of GRB050922C is complex. At least seven components contribute to the main absorption system at z=2.1992. The detection of lines of neutral elements like MgI and the detection of fine-structure levels of the ions FeII, SiII and CII allows us to separate components in the GRB ISM along the line of sight. Moreover, in addition to the main system, we analyzed the five intervening systems between z=2.077 and z=1.5664 identified along the GRB line of sight. GRB afterglow spectra are very complex, but full of information. This can be used to disentangle the contribution of the different parts of the GRB host galaxy and to study their properties. Our metallicity estimates agree with the scenario of GRBs exploding in low metallicity galaxies

Abstract Copyright:

Journal keyword(s): gamma rays: bursts - cosmology: observations - galaxies: abundances - galaxies: ISM

Nomenclature: Paragr. 3: [PWF2008] GRB 050922C abs N.NNN, [PWF2008] GRB 050922C abs N.NNNN, N=6.

Status at CDS:   All or part of tables of objects will not be ingested in SIMBAD.

Simbad objects: 10

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Number of rows : 10

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 GRB 021004 gB 00 26 54.68 +18 55 41.6           ~ 514 1
2 GRB 050505 gB 09 27 03.300 +30 16 23.70     20.74     ~ 170 1
3 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1117 2
4 GRB 030226 gB 11 33 04.9 +25 53 56           ~ 186 2
5 GRB 050730 gB 14 08 17.090 -03 46 18.90   20.32 17.68     ~ 282 1
6 GRB 080319B gB 14 31 41.04 +36 18 09.2           ~ 421 0
7 GRB 060418 gB 15 45 42.600 -03 38 20.00 15.73 16.19 14.98     ~ 322 1
8 GRB 020813A gB 19 46 41.874 -19 36 04.81           ~ 285 1
9 GRB 050922C gB 21 09 33.000 -08 45 30.10 15.15 15.86 14.69     ~ 250 0
10 [PWF2008] GRB 050922C abs 2.1992 G 21 09 33.10 -08 45 29.8           ~ 3 0

    Equat.    Gal    SGal    Ecl

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2020.07.04-21:14:51

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