2011MNRAS.414.1263M


C.D.S. - SIMBAD4 rel 1.7 - 2020.04.06CEST11:57:23

2011MNRAS.414.1263M - Mon. Not. R. Astron. Soc., 414, 1263-1268 (2011/June-3)

The metallicity of the long GRB hosts and the fundamental metallicity relation of low-mass galaxies.

MANNUCCI F., SALVATERRA R. and CAMPISI M.A.

Abstract (from CDS):

We investigate the metallicity properties of host galaxies of long gamma-ray bursts (GRBs) in the light of the fundamental metallicity relation (FMR), the tight dependence of metallicity on mass and star formation rate (SFR) recently discovered for Sloan Digital Sky Survey galaxies with stellar masses above 109.2 M. As most of the GRB hosts have masses below this limit, the FMR can only be used after an extension towards lower masses. With this aim, we study the FMR for galaxies with masses down to ∼108.3 M, finding that the FMR does extend smoothly at lower masses, albeit with a much larger scatter. We then compare the resulting FMR with the metallicity properties of 18 host galaxies of long GRBs. While the GRB hosts show a systematic offset with respect to the mass–metallicity relation, they are fully consistent with the FMR. This shows that the difference with the mass–metallicity relation is due to higher than average SFRs and that GRBs with optical afterglows do not preferentially select low-metallicity hosts among the star-forming galaxies. The apparent low metallicity is therefore a consequence of the occurrence of a long GRB in low-mass, actively star-forming galaxies, known to dominate the current cosmic SFR.

Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): galaxies: abundances - galaxies: star formation

Status at CDS:  

Simbad objects: 21

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Number of rows : 21

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2020
#notes
1 GRB 050904 gB 00 54 50.794 +14 05 09.42           ~ 428 1
2 GRB 040924 gB 02 06 22.52 +16 08 48.8           ~ 146 1
3 SN 2006aj SN* 03 21 39.670 +16 52 02.27 17.96 19.11 17.40     SNIc-BL 817 1
4 GRB 970228 gB 05 01 46.7 +11 46 53           ~ 624 1
5 GRB 050826 gB 05 51 01.590 -02 38 35.40           ~ 104 0
6 SN 2003lw SN* 08 02 30.1 -39 51 03       20.23   SNIc: 501 0
7 GRB 090423 gB 09 55 33.19 +18 08 57.7           ~ 307 0
8 GRB 011121 gB 11 34 26.67 -76 01 41.6       23.0   ~ 254 1
9 GRB 050416 gB 12 33 54.600 +21 03 26.69     19.12     ~ 249 1
10 GRB 020405 gB 13 58 03.12 -31 22 22.2   21.9 21.5     ~ 232 1
11 GRB 050401 gB 16 31 28.84 +02 11 14.5           ~ 299 0
12 GRB 030528 gB 17 04 00.3 -22 37 10           ~ 83 1
13 GRB 050223 gB 18 05 32.200 -62 28 20.40           ~ 98 0
14 SN 1998bw SN* 19 35 03.17 -52 50 46.1   14.09       SNIc 1632 2
15 GRB 060505 gB 22 07 03.440 -27 48 51.89           ~ 217 1
16 GRB 990712 gB 22 31 53.061 -73 24 28.58           ~ 247 1
17 GRB 020903 gB 22 48 42.34 -20 46 09.3           ~ 213 1
18 GRB 010921 gB 22 55 59.90 +40 55 52.9           ~ 157 1
19 GRB 020819 gB 23 00 12 -43 00.7           ~ 120 1
20 GRB 051022A gB 23 56 04.200 +19 36 32.30           ~ 161 1
21 GRB 980703 gB 23 59 06.7 +08 35 07           ~ 417 1

    Equat.    Gal    SGal    Ecl

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2020.04.06-11:57:23

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