2012ApJ...756..187H

Query : 2012ApJ...756..187H

2012ApJ...756..187H - Astrophys. J., 756, 187 (2012/September-2)

The optically unbiased gamma-ray burst host (TOUGH) survey. I. Survey design and catalogs.

HJORTH J., MALESANI D., JAKOBSSON P., JAUNSEN A.O., FYNBO J.P.U., GOROSABEL J., KRUHLER T., LEVAN A.J., MICHALOWSKI M.J., MILVANG-JENSEN B., MOLLER P., SCHULZE S., TANVIR N.R. and WATSON D.

Abstract (from CDS):

Long-duration gamma-ray bursts (GRBs) are powerful tracers of star-forming galaxies. We have defined a homogeneous subsample of 69 Swift GRB-selected galaxies spanning a very wide redshift range. Special attention has been devoted to making the sample optically unbiased through simple and well-defined selection criteria based on the high-energy properties of the bursts and their positions on the sky. Thanks to our extensive follow-up observations, this sample has now achieved a comparatively high degree of redshift completeness, and thus provides a legacy sample, useful for statistical studies of GRBs and their host galaxies. In this paper, we present the survey design and summarize the results of our observing program conducted at the ESO Very Large Telescope (VLT) aimed at obtaining the most basic properties of galaxies in this sample, including a catalog of R and Ks magnitudes and redshifts. We detect the host galaxies for 80% of the GRBs in the sample, although only 42% have Ks-band detections, which confirms that GRB-selected host galaxies are generally blue. The sample is not uniformly blue, however, with two extremely red objects detected. Moreover, galaxies hosting GRBs with no optical/NIR afterglows, whose identification therefore relies on X-ray localizations, are significantly brighter and redder than those with an optical/NIR afterglow. This supports a scenario where GRBs occurring in more massive and dusty galaxies frequently suffer high optical obscuration. Our spectroscopic campaign has resulted in 77% now having redshift measurements, with a median redshift of 2.14±0.18. TOUGH alone includes 17 detected z > 2 Swift GRB host galaxies suitable for individual and statistical studies–a substantial increase over previous samples. Seven hosts have detections of the Lyα emission line and we can exclude an early indication that Lyα emission is ubiquitous among GRB hosts, but confirm that Lyα is stronger in GRB-selected galaxies than in flux-limited samples of Lyman break galaxies.

Abstract Copyright: ∼

Journal keyword(s): cosmology: observations - galaxies: fundamental parameters - galaxies: high-redshift - gamma-ray burst: general - surveys

Simbad objects: 85

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Number of rows : 85
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 GRB 070110 gB 00 03 39.270 -52 58 27.00 21.8 21.9 21.2     ~ 201 0
2 GRB 070611 gB 00 07 58.000 -29 45 19.40           ~ 89 0
3 GRB 070721A gB 00 12 39.20 -28 33 00.0           ~ 32 0
4 GRB 060912A gB 00 21 08.11 +20 58 18.9           ~ 103 1
5 GRB 050922B gB 00 23 13.400 -05 36 17.80           ~ 73 0
6 GRB 070808 gB 00 27 03.40 +01 10 35.4           ~ 52 0
7 GRB 060708 gB 00 31 13.850 -33 45 32.40 19.07 19.79 17.37     ~ 98 0
8 GRB 050824 gB 00 48 56.100 +22 36 32.00 19.66 21.03 20.46 23.70   ~ 177 0
9 GRB 050904 gB 00 54 50.794 +14 05 09.42           ~ 470 0
10 GRB 060719 gB 01 13 43.380 -48 22 55.09           ~ 96 0
11 GRB 050908 gB 01 21 50.750 -12 57 17.20           ~ 173 0
12 GRB 060908 gB 02 07 18.360 +00 20 31.20 16.99 18.34 16.85     ~ 199 0
13 GRB 070721B gB 02 12 32.98 -02 11 39.8           ~ 116 0
14 GRB 050406 gB 02 17 52.200 -50 11 15.81     18.83     ~ 122 0
15 GRB 070802 gB 02 27 35.91 -55 31 39.1           ~ 153 0
16 GRB 070129 gB 02 28 00.940 +11 41 04.00       21.3   ~ 109 0
17 GRB 050603 gB 02 39 56.839 -25 10 54.92     18.48     ~ 165 0
18 GRB 060306 gB 02 44 22.830 -02 08 55.00           ~ 108 0
19 GRB 061007 gB 03 05 19.510 -50 30 02.50 14.28 14.40 12.95     ~ 289 1
20 GRB 070318 gB 03 13 56.830 -42 56 46.30 18.27 16.23 15.49     ~ 156 0
21 GRB 050318 gB 03 18 51.000 -46 23 43.61 18.10 18.68 17.58     ~ 178 0
22 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 940 1
23 GRB 050822 gB 03 24 27.240 -46 01 59.20     20.82     ~ 108 0
24 GRB 060115 gB 03 36 08.400 +17 20 43.00           ~ 167 0
25 GRB 060223A gB 03 40 49.560 -17 07 48.40     17.90     ~ 89 0
26 GRB 070328 gB 04 20 27.680 -34 04 00.60 20.29         ~ 87 0
27 GRB 060313 gB 04 26 28.180 -10 50 37.95 20.55 21.03 19.66     ~ 146 0
28 GRB 050915A gB 05 26 44.804 -28 00 59.27           ~ 80 0
29 GRB 051117B gB 05 40 43.260 -19 16 26.10           ~ 71 0
30 GRB 060204C gB 06 10 54.0 +70 10 14           ~ 14 0
31 GRB 060729 gB 06 21 31.850 -62 22 12.69           ~ 282 0
32 GRB 061004 gB 06 31 10.710 -45 54 28.71           ~ 49 0
33 GRB 051006 gB 07 23 13.520 +09 30 24.48           ~ 69 0
34 GRB 051016B gB 08 48 27.810 +13 39 20.00 20.45         ~ 144 0
35 GRB 050502B gB 09 30 10.024 +16 59 48.07           ~ 161 0
36 GRB 061021 gB 09 40 36.120 -21 57 05.40 18.21 19.20 16.82     ~ 145 0
37 EQ J094036-215705 G 09 40 36.124 -21 57 05.05           ~ 5 0
38 GRB 061121 gB 09 48 54.570 -13 11 42.68 17.19 17.71 17.02     ~ 326 0
39 GRB 070306 gB 09 52 23.220 +10 28 55.20           ~ 206 1
40 Fermi bn090423330 gB 09 55 33.19 +18 08 57.7           ~ 357 0
41 GRB 060602A gB 09 58 16.93 +00 18 12.8           ~ 45 0
42 GRB 050714B gB 11 18 47.610 -15 32 48.90           ~ 75 0
43 GRB 070224 gB 11 56 06.650 -13 19 48.80           ~ 57 0
44 GRB 060123 gB 11 58 47.83 +45 30 50.9           ~ 44 0
45 GRB 050412 gB 12 04 25.060 -01 12 03.60           ~ 83 0
46 GRB 050416 gB 12 33 54.600 +21 03 26.69     19.12     ~ 283 1
47 GRB 070810A gB 12 39 51.18 +10 45 02.8           ~ 73 0
48 GRB 050726 gB 13 20 11.900 -32 03 51.89     17.58     ~ 67 0
49 GRB 050801 gB 13 36 35.000 -21 55 41.00 15.03 15.82 15.46     ~ 156 0
50 GRB 080207 gB 13 50 03.02 +07 30 08.0           ~ 103 0
51 GRB 050730 gB 14 08 17.090 -03 46 18.90   20.32 17.68     ~ 313 0
52 GRB 060805A gB 14 43 43.480 +12 35 11.40           ~ 60 0
53 GRB 060814 gB 14 45 21.480 +20 35 11.80           ~ 218 0
54 GRB 060714 gB 15 11 26.450 -06 33 58.30   20.21 18.54     ~ 192 0
55 GRB 060526 gB 15 31 18.360 +00 17 04.90   18.31 17.16     ~ 269 0
56 GRB 060923B gB 15 52 46.740 -30 54 11.30 19.80         ~ 37 0
57 GRB 050401 gB 16 31 28.84 +02 11 14.5           ~ 335 0
58 GRB 060923A gB 16 58 28.150 +12 21 38.90           ~ 67 0
59 2XMM J174931.6-280805 LXB 17 49 31.940 -28 08 05.80           ~ 98 0
60 GRB 070330 gB 17 58 09.980 -63 47 34.80     18.87     ~ 45 0
61 GRB 060919 gB 18 27 41.740 -51 00 52.41           ~ 40 0
62 SN 2005nc SN* 18 32 32.560 +26 20 22.34           SNIc: 382 1
63 GRB 070610 X 19 55 09.60 +26 14 06.7           ~ 58 0
64 GRB 050315 gB 20 25 54.100 -42 36 02.19           ~ 215 0
65 GRB 070419B gB 21 02 49.820 -31 15 49.30   20.35       ~ 78 0
66 GRB 050922C gB 21 09 33.000 -08 45 30.10 15.15 15.86 14.69     ~ 282 0
67 GRB 060614 gB 21 23 32.140 -53 01 36.10 18.89 20.12 19.54     ~ 612 1
68 GRB 060605 gB 21 28 37.320 -06 03 31.30   20.12 16.53     ~ 193 0
69 GRB 060522 gB 21 31 44.850 +02 53 10.80           ~ 131 0
70 GRB 070621 gB 21 35 10.17 -24 49 02.6           ~ 66 0
71 GRB 061110B gB 21 35 40.400 +06 52 34.10           ~ 84 0
72 GRB 060117 gB 21 51 36.130 -59 58 39.10           ~ 59 0
73 GRB 060927A gB 21 58 11.930 +05 21 50.32           ~ 196 0
74 GRB 060607 gB 21 58 50.400 -22 29 46.70 18.49 16.67 15.09     ~ 295 0
75 GRB 060505 gB 22 07 03.440 -27 48 51.89           ~ 259 1
76 GRB 061110A gB 22 25 09.800 -02 15 30.70 21.43         ~ 126 0
77 GRB 060604 gB 22 28 55.010 -10 54 55.80 20.34 20.31       ~ 125 0
78 GRB 050820A gB 22 29 38.110 +19 33 37.10 18.33 19.00 18.47     ~ 386 0
79 GRB 060923C gB 23 04 28.36 +03 55 28.4           ~ 56 0
80 GRB 070506 gB 23 08 52.390 +10 43 20.30     19.04     ~ 79 0
81 GRB 050803 gB 23 22 37.910 +05 47 09.00           ~ 116 0
82 GRB 051001 gB 23 23 48.580 -31 31 25.70           ~ 75 0
83 GRB 070103 gB 23 30 13.750 +26 52 33.70           ~ 66 0
84 GRB 060707 gB 23 48 19.000 -17 54 17.00     19.79     ~ 158 0
85 GRB 050819 gB 23 55 01.650 +24 51 38.80           ~ 72 0

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