Table 7
Properties of the host galaxy and GRB hosts at z < 1.5.
| Parameter | Host | GHostS | TOUGH |
|
|
|||
| Sample size | 74 | 20 | |
| Redshift | 0.28256 |
|
|
| MUV,est (mag) | −18.2 | <−18.6 ± 1.2 | <−18.4 ± 1.4 |
| MKs,est (mag) | −19.8 |
|
|
| MB,SED (mag) | −19.4 ± 0.1 |
|
... |
| MKs,SED (mag) | −19.5 ± 0.2 |
|
... |
| AV (mag) | <0.04 |
|
... |
| log M⋆(M⊙) | 8.95 ± 0.04 | 9.3 ± 0.5 | ... |
| Age (Myr) | 350 ± 30 |
|
... |
| SFR (M⊙ yr-1) | 0.4 ± 0.1 |
|
... |
| Z (Z⊙) | 0.6 |
|
... |
| Offset (kpc) | 7.3 |
|
... |
Notes. Host properties of 120422A and the median values of GRB hosts, as compiled in the GHostS database (date: 2013 December 3) and of the homogeneous, optically unbiased TOUGH survey (Hjorth et al. 2012, incl. results from Schulze et al., in prep.). The errors of the comparison samples indicate the distance from the median values to the 25 and 75% percentiles. The age represents the age of the starburst. The stellar mass of GRB 120422A’s host was calculated by assuming the Chabrier IMF. The UV and Ks luminosities, marked by “est” were computed using the method in Schulze et al. (in prep.) and Laskar et al. (2011), respectively. Measurements designated with “SED” were obtained from SED fitting. The GRB offsets of the sub-set of bursts in the GHostS sample are compiled in Bloom et al. (2002), and the age distribution and results from SED fitting for the GHost sample were taken from Savaglio et al. (2009).
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