2008MNRAS.388.1743T

Query : 2008MNRAS.388.1743T

2008MNRAS.388.1743T - Mon. Not. R. Astron. Soc., 388, 1743-1750 (2008/August-3)

The extreme, red afterglow of GRB 060923A: distance or dust ?

TANVIR N.R., LEVAN A.J., ROL E., STARLING R.L.C., GOROSABEL J., PRIDDEY R.S., MALESANI D., JAKOBSSON P., O'BRIEN P.T., JAUNSEN A.O., HJORTH J., FYNBO J.P.U., MELANDRI A., GOMBOC A., MILVANG-JENSEN B., FRUCHTER A.S., JARVIS M., FERNANDES C.A.C. and WOLD T.

Abstract (from CDS):

Gamma-ray bursts (GRBs) are powerful probes of the early Universe, but locating and identifying very distant GRBs remain challenging. We report here the discovery of the K-band afterglow of Swift GRB 060923A, imaged within the first hour post-burst, and the faintest so far found. It was not detected in any bluer bands to deep limits, making it a candidate very high-z burst (z ≳ 11). However, our later-time optical imaging and spectroscopy reveal a faint galaxy coincident with the GRB position which, if it is the host, implies a more moderate redshift (most likely z ≲ 2.8) and therefore that dust is the likely cause of the very red-afterglow colour. This being the case, it is one of the few instances so far found of a GRB afterglow with high-dust extinction.

Abstract Copyright: © 2008 The Authors. Journal compilation © 2008 RAS

Journal keyword(s): galaxies: high-redshift - gamma-rays: bursts

Simbad objects: 34

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Number of rows : 34
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 GRB 041219 gB 00 24 27.7 +62 50 34           ~ 231 1
2 NAME SMC G 00 52 38.0 -72 48 01   2.79 2.2     ~ 12317 1
3 GRB 050904 gB 00 54 50.794 +14 05 09.42           ~ 496 0
4 GRB 050908 gB 01 21 50.750 -12 57 17.20           ~ 179 0
5 M 33 GiG 01 33 50.8965749232 +30 39 36.630403128 6.17 6.27 5.72     ~ 6226 1
6 NGC 604 HII 01 34 32.1 +30 47 01           ~ 608 0
7 GRB 000210 gB 01 59 15 -40 40.0           ~ 175 0
8 GRB 061007 gB 03 05 19.510 -50 30 02.50 14.28 14.40 12.95     ~ 315 1
9 GRB 070411 gB 07 09 19.930 +01 03 52.60     17.94     ~ 138 0
10 GRB 020127 gB 08 15 05.8 +36 44 31           ~ 66 0
11 GRB 060108 gB 09 48 01.980 +31 55 08.59           ~ 107 0
12 GRB 070306 gB 09 52 23.220 +10 28 55.20           ~ 222 1
13 GRB 050319 gB 10 16 47.900 +43 32 53.80   18.02 17.01     ~ 274 0
14 GRB 030115 gB 11 18 32.6 +15 02 59           ~ 90 1
15 GRB 060323 gB 11 37 44.910 +50 00 33.49           ~ 50 0
16 GRB 050215B gB 11 37 48.030 +40 47 43.39           ~ 71 0
17 GRB 050412 gB 12 04 25.060 -01 12 03.60           ~ 85 0
18 GRB 070419A gB 12 10 58.830 +39 55 34.06 18.52         ~ 130 0
19 GRB 050416 gB 12 33 54.600 +21 03 26.69     19.12     ~ 300 1
20 GRB 050502A gB 13 29 46.250 +42 40 27.50           ~ 65 0
21 GRB 050730 gB 14 08 17.090 -03 46 18.90   20.32 17.68     ~ 327 0
22 GRB 060418 gB 15 45 42.600 -03 38 20.00 15.73 16.19 14.98     ~ 389 0
23 GRB 050401 gB 16 31 28.84 +02 11 14.5           ~ 348 0
24 GRB 060807 gB 16 50 02.600 +31 35 30.70           ~ 61 0
25 GRB 060923A gB 16 58 28.150 +12 21 38.90           ~ 70 0
26 GRB 050814 gB 17 36 45.390 +46 20 21.60           ~ 166 0
27 GRB 970828 gB 18 08 31.6 +59 18 51           ~ 353 1
28 SN 2005nc SN* 18 32 32.560 +26 20 22.34           SNIc: 400 1
29 GRB 050422 gB 21 37 54.650 +55 46 46.40     19.85     ~ 45 0
30 GRB 060927A gB 21 58 11.930 +05 21 50.32           ~ 215 0
31 GRB 050820A gB 22 29 38.110 +19 33 37.10 18.33 19.00 18.47     ~ 409 0
32 GRB 051111A gB 23 12 33.170 +18 22 28.80 19.77 20.08 19.50     ~ 223 0
33 GRB 061222A gB 23 53 03.419 +46 31 58.60           ~ 177 0
34 GRB 051022A gB 23 56 04.200 +19 36 32.30           ~ 194 1

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