2003A&A...409..123G


C.D.S. - SIMBAD4 rel 1.7 - 2020.07.13CEST01:34:04

2003A&A...409..123G - Astronomy and Astrophysics, volume 409, 123-133 (2003/10-1)

The blue host galaxy of the red GRB 000418.

GOROSABEL J., KLOSE S., CHRISTENSEN L., FYNBO J.P.U., HJORTH J., GREINER J., TANVIR N., JENSEN B.L., PEDERSEN H., HOLLAND S.T., LUND N., JAUNSEN A.O., CASTRO CERON J.M., CASTRO-TIRADO A.J., FRUCHTER A., PIAN E., VREESWIJK P.M., BURUD I., FRONTERA F., KAPER L., KOUVELIOTOU C., MASETTI N., PALAZZI E., RHOADS J., ROL E., SALAMANCA I., WIJERS R.A.M.J. and VAN DEN HEUVEL E.

Abstract (from CDS):

We report on multi-band (UBVRIZJsKs) observations of the host galaxy of the April 18, 2000 gamma-ray burst. The Spectral Energy Distribution (SED) is analysed by fitting empirical and synthetic spectral templates. We find that: (i) the best SED fit is obtained with a starburst template, (ii) the photometric redshift is consistent with the spectroscopic redshift, (iii) the colours of the host are inconsistent with an old stellar population, and (iv) the global extinction is constrained to be in the range AV=0.12-0.61mag. The derived global extinction agrees with the one reported for the afterglow (AV=0.4-0.9mag), suggesting a homogeneous distribution of the interstellar medium (ISM) in the host galaxy. These findings are supplemented by morphological information from Hubble Space Telescope (HST) imaging: the surface brightness profile is smooth, symmetric and compact with no underlying structures (like dust lanes, spiral arms or disks). A natural scenario which accounts of all the above results is a nuclear starburst that harbours a young population of stars from which the GRB originated.

Abstract Copyright:

Journal keyword(s): gamma rays: bursts - galaxies: fundamental parameters - techniques: photometric

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 000210 gB 01 59 15 -40 40.0           ~ 164 0
2 [LDM2003] GRB J015915.5-403933 G 01 59 15.61 -40 39 33.1           ~ 13 0
3 GRB 000131 gB 06 13 31.08 -51 56 41.7     24.7     ~ 161 1
4 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1117 2
5 [BCK2003] G1 G 12 25 19.3 +20 06 11           ~ 19 0
6 GRB 000418 gB 12 25 21 +20 05.0           ~ 201 0
7 GRB 990712 gB 22 31 53.061 -73 24 28.58           ~ 250 1
8 [LDM2003] GRB J223153.1-732429 G 22 31 53.1 -73 24 29           ~ 14 1
9 GRB 980703 gB 23 59 06.7 +08 35 07           ~ 421 1
10 [LDM2003] GRB J235906.7+083507 G 23 59 06.7 +08 35 07   23.04 23.02     ~ 23 1

    Equat.    Gal    SGal    Ecl

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2020.07.13-01:34:04

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