2004A&A...413..121C


Query : 2004A&A...413..121C

2004A&A...413..121C - Astronomy and Astrophysics, volume 413, 121-130 (2004/1-1)

The host galaxy of GRB 990712.

CHRISTENSEN L., HJORTH J., GOROSABEL J., VREESWIJK P., FRUCHTER A., SAHU K. and PETRO L.

Abstract (from CDS):

We present a comprehensive study of the z=0.43 host galaxy of GRB 990712, involving ground-based photometry, spectroscopy, and HST imaging. The broad-band UBVRIJHKs photometry is used to determine the global spectral energy distribution (SED) of the host galaxy. Comparison with that of known galaxy types shows that the host is similar to a moderately reddened starburst galaxy with a young stellar population. The estimated internal extinction in the host is AV=0.15±0.1 and the star-formation rate (SFR) from the UV continuum is 1.3±0.3M/yr (not corrected for the effects of extinction). Other galaxy template spectra than starbursts failed to reproduce the observed SED. We also present VLT spectra leading to the detection of Hα from the GRB host galaxy. A SFR of 2.8±0.7M/yr is inferred from the Hα line flux, and the presence of a young stellar population is supported by a large equivalent width. Images from HST/STIS show that the host has two separate knots, which could be two distinct star-forming regions.

Abstract Copyright:

Journal keyword(s): gamma rays: bursts - galaxies: hosts - galaxies: star formation

Nomenclature: Fig.1, Table1: [CHG2004] A (Nos A-D), [CHG2004] N (Nos 1-6).

Simbad objects: 23

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Number of rows : 23
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 GRB 021004 gB 00 26 54.68 +18 55 41.6           ~ 531 0
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 10465 1
3 GRB 000210 gB 01 59 15 -40 40.0           ~ 166 0
4 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 16411 1
5 SN 2003dh SN* 10 44 50.030 +21 31 18.15     16.2     SNIcpec 1176 1
6 GRB 011121 gB 11 34 26.67 -76 01 41.6       23.0   ~ 263 1
7 GRB 000418 gB 12 25 21 +20 05.0           ~ 207 0
8 GRB 010222 G 14 52 12.5 +43 01 06           ~ 343 1
9 GRB 000301C gB 16 20 18.5 +29 26 35           ~ 349 0
10 GRB 000926 gB 17 04 15 +51 46.0           ~ 353 0
11 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1756 2
12 [CHG2004] B * 22 31 40.1375126088 -73 25 09.561498384     16.975     ~ 2 0
13 [CHG2004] C * 22 31 49.7938822992 -73 26 09.299894964     16.455     ~ 2 0
14 [CHG2004] A * 22 31 50.8603848024 -73 24 25.400679948     17.185     ~ 2 0
15 GRB 990712 gB 22 31 53.061 -73 24 28.58           ~ 256 1
16 [CHG2004] D * 22 32 18.7030236120 -73 24 10.275477912     15.905     ~ 2 0
17 GRB 980703 gB 23 59 06.7 +08 35 07           ~ 434 1
18 [CHG2004] 1 * ~ ~     19.84     ~ 1 0
19 [CHG2004] 6 * ~ ~     19.21     ~ 1 0
20 [CHG2004] 5 * ~ ~     20.72     ~ 1 0
21 [CHG2004] 4 * ~ ~     18.90     ~ 1 0
22 [CHG2004] 3 * ~ ~     19.08     ~ 1 0
23 [CHG2004] 2 * ~ ~     18.21     ~ 1 0

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2022.12.07-03:34:00

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