2014A&A...570A..52S


Query : 2014A&A...570A..52S

2014A&A...570A..52S - Astronomy and Astrophysics, volume 570A, 52-52 (2014/10-1)

Herschel observations of gamma-ray burst host galaxies: implications for the topology of the dusty interstellar medium.

SCHADY P., SAVAGLIO S., MUELLER T., KRUEHLER T., DWELLY T., PALAZZI E., HUNT L.K., GREINER J., LINZ H., MICHALOWSKI M.J., PIERINI D., PIRANOMONTE S., VERGANI S.D. and GEAR W.K.

Abstract (from CDS):

Long-duration gamma-ray bursts (GRBs) are indisputably related to star formation, and their vast luminosity in gamma rays pin-points regions of star formation independent of galaxy mass, out to the epoch of re-ionisation. As such, GRBs provide a unique tool for studying star forming galaxies out to high-z independent of luminosity. Most of our understanding of the properties of GRB hosts (GRBHs) comes from optical and near-infrared follow-up observations, and we therefore have relatively little knowledge of the fraction of dust-enshrouded star formation that resides within GRBHs. Currently ∼20% of GRBs show evidence of significant amounts of dust within their host galaxy along the GRB line of sight, and these GRBs tend to reside within redder and more massive galaxies than GRBs with optically bright afterglows. In this paper we present Herschel observations of five GRBHs with evidence of being dust-rich, targeted to understand the properties of the dust attenuation within GRBs better. Despite the sensitivity of our Herschel observations, only one galaxy in our sample was detected (GRBH 070306), for which we measure a total star formation rate of ∼100M/yr, and which had a relatively high stellar mass (log[M*]=10.34+0.09–0.04). Nevertheless, when considering a larger sample of GRBHs observed with Herschel, it is clear that stellar mass is not the only factor contributing to a Herschel detection, and significant dust extinction along the GRB sightline (AV,GRB>1.5mag) appears to be a considerably better tracer of GRBHs with a high dust mass. This suggests that the extinguishing dust along the GRB line of sight lies predominantly within the host galaxy ISM, and thus those GRBs with AV,GRB>1mag but with no host galaxy Herschel detections are likely to have been predominantly extinguished by dust within an intervening dense cloud.

Abstract Copyright:

Journal keyword(s): galaxies: high-redshift - gamma-ray burst: general - dust, extinction - infrared: galaxies - submillimeter: galaxies - galaxies: star formation

Simbad objects: 16

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Number of rows : 16
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2022
#notes
1 GRB 000210 gB 01 59 15 -40 40.0           ~ 166 0
2 [LDM2003] GRB J015915.5-403933 G 01 59 15.61 -40 39 33.1           ~ 13 0
3 [KGS2011] GRB 090926B host G G 03 05 13.91 -39 00 22.6 23.71         ~ 4 0
4 Fermi bn090926914 gB 03 05 14.30 -38 59 50.9           ~ 122 1
5 SN 2003lw SN* 08 02 30.1 -39 51 03       20.23   SNIc: 522 0
6 Anon J080230-3951 G 08 02 30.20 -39 51 03.0 22.31 22.32 20.53 20.44 19.40 ~ 20 0
7 GRB 070306 gB 09 52 23.220 +10 28 55.20           ~ 193 1
8 SDSS J095223.31+102855.4 G 09 52 23.32 +10 28 55.4       23.00   ~ 7 0
9 [BCK2003] G1 G 12 25 19.3 +20 06 11           ~ 19 0
10 GRB 000418 gB 12 25 21 +20 05.0           ~ 205 0
11 GRB 010222 G 14 52 12.5 +43 01 06           ~ 341 1
12 [LDM2003] GRB J180831.6+591851 G 18 08 31.6 +59 18 51           ~ 14 1
13 [TSC98] Host G G 19 34 54 -52 49.9           ~ 20 1
14 [KGS2011] GRB 081109 host G G 22 03 09.63 -54 42 39.9 23.23   22.85   21.96 ~ 3 0
15 Fermi bn081109293 gB 22 03 11.50 -54 42 40.5           ~ 100 1
16 Fermi bn081119184 gB 23 06 +30.0           ~ 13 0

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2022.10.02-02:41:40

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