2004AJ....128.1942K


C.D.S. - SIMBAD4 rel 1.7 - 2021.03.03CET10:04:18

2004AJ....128.1942K - Astron. J., 128, 1942-1954 (2004/November-0)

Probing a gamma-ray burst progenitor at a redshift of z = 2: a comprehensive observing campaign of the afterglow of GRB 030226.

KLOSE S., GREINER J., RAU A., HENDEN A.A., HARTMANN D.H., ZEH A., RIES C., MASETTI N., MALESANI D., GUENTHER E., GOROSABEL J., STECKLUM B., ANTONELLI L.A., BRINKWORTH C., CASTRO CERON J.M., CASTRO-TIRADO A.J., COVINO S., FRUCHTER A., FYNBO J.P.U., GHISELLINI G., HJORTH J., HUDEC R., JELINEK M., KAPER L., KOUVELIOTOU C., LINDSAY K., MAIORANO E., MANNUCCI F., NYSEWANDER M., PALAZZI E., PEDERSEN K., PIAN E., REICHART D.E., RHOADS J., ROL E., SMAIL I., TANVIR N.R., DE UGARTE POSTIGO A., VREESWIJK P.M., WIJERS R.A.M.J. and VAN DEN HEUVEL E.P.J.

Abstract (from CDS):

We report results from a comprehensive follow-up observing campaign of the afterglow of GRB 030226, including VLT spectroscopy, VLT polarimetry, and Chandra X-ray observations. In addition, we present BOOTES-1 wide-field observations at the time of the occurrence of the burst. First observations at ESO started 0.2 days after the event when the gamma ray burst (GRB) afterglow was at a magnitude of R∼19 and continued until the afterglow had faded below the detection threshold (R>26). No underlying host galaxy was found. The optical light curve shows a break around 0.8 days after the burst, which is achromatic within the observational errors, supporting the view that it was due to a jetted explosion. Close to the break time the degree of linear polarization of the afterglow light was less than 1.1%, which favors a uniform-jet model rather than a structured one. VLT spectra show two absorption line systems at redshifts z=1.962±0.001 and 1.986±0.001, placing the lower limit for the redshift of the GRB close to 2. We emphasize that the kinematics and the composition of the absorbing clouds responsible for these line systems are very similar to those observed in the afterglow of GRB 021004. This corroborates the picture in which at least some GRBs are physically related to the explosion of a Wolf-Rayet star.

Abstract Copyright:

Journal keyword(s): gamma rays: bursts - Stars: Wolf-Rayet

Nomenclature: Fig.1: [KGR2004] Ref Star N=1. Text: [KGR2004] JHHMMSS.s+DDMMSS N=3.

Simbad objects: 20

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Number of rows : 20

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 GRB 021004 gB 00 26 54.68 +18 55 41.6           ~ 518 0
2 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1130 1
3 * eta Car Em* 10 45 03.5455050 -59 41 03.951060 6.37 7.034 6.21 4.90 4.41 OBepec 2255 0
4 GRB 011211 gB 11 15 16 -21 56.0           ~ 288 0
5 FS 130 * 11 24 55.92 +34 44 38.5   16.47 15.07     K4 7 0
6 [KGR2004] J113302.8+255355 X 11 33 02.8 +25 53 55           ~ 1 0
7 [KGR2004] Ref Star * 11 33 04.3 +25 54 22           ~ 1 0
8 [KGR2004] J113304.9+255355 X 11 33 04.9 +25 53 55           ~ 1 1
9 GRB 030226 gB 11 33 04.9 +25 53 56           ~ 189 0
10 [KGR2004] J113313.9+255229 X 11 33 13.9 +25 52 29           ~ 1 0
11 GRB 990510 gB 13 38 07.64 -80 29 48.8           ~ 468 1
12 GRB 020405 gB 13 58 03.12 -31 22 22.2   21.9 21.5     ~ 238 1
13 GRB 010222 G 14 52 12.5 +43 01 06           ~ 337 1
14 GRB 990123 gB 15 25 29 +44 45.0     8.95     ~ 966 1
15 LP 916-15 PM* 15 38 59.6477173130 -28 35 36.970418054   12.19 11.62     A 107 0
16 BD+33 2642 pA* 15 51 59.8857490337 +32 56 54.327647794 9.806 10.61 10.73 10.884 10.961 O7p 385 0
17 GRB 000301C gB 16 20 18.5 +29 26 35           ~ 342 0
18 CD-28 13479 * 17 43 19.5889905561 -28 40 32.664304216 11.17 11.36 10.61 10.46   B1II-III:nn 27 0
19 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1673 2
20 GRB 020813A gB 19 46 41.874 -19 36 04.81           ~ 287 0

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2021.03.03-10:04:18

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