Discovery of the afterglow and host galaxy of the low-redshift short GRB 080905A

A. Rowlinson...[et al.]; K. Wiersema; A. J. Levan; Jens Hjorth; Christina Thöne; Johan Peter Uldall Fynbo

doi:10.1111/j.1365-2966.2010.17115.x

Discovery of the afterglow and host galaxy of the low-redshift short GRB 080905A

A. Rowlinson...[et al.], K. Wiersema, A. J. Levan, Jens Hjorth, Christina Thöne, Johan Peter Uldall Fynbo

69 Citationer (Scopus)

Abstract

We present the discovery of short GRB 080905A, its optical afterglow and host galaxy. Initially discovered by Swift, our deep optical observations enabled the identification of a faint optical afterglow, and subsequently a face-on spiral host galaxy underlying the GRB position, with a chance alignment probability of <1 per cent. There is no supernova component present in the afterglow to deep limits. Spectroscopy of the galaxy provides a redshift of z= 0.1218, the lowest redshift yet observed for a short GRB. The GRB lies offset from the host galaxy centre by ~ 18.5 kpc, in the northern spiral arm which exhibits an older stellar population than the southern arm. No emission lines are visible directly under the burst position, implying little ongoing star formation at the burst location. These properties would naturally be explained were the progenitor of GRB 080905A a compact binary merger.

Originalsprog	Engelsk
Tidsskrift	Monthly Notices of the Royal Astronomical Society
Vol/bind	408
Udgave nummer	1
Sider (fra-til)	383-391
Antal sider	8
ISSN	0035-8711
DOI	https://doi.org/10.1111/j.1365-2966.2010.17115.x
Status	Udgivet - 11 okt. 2010

Adgang til dokumentet

10.1111/j.1365-2966.2010.17115.x

Citationsformater

@article{c1c2d3fc0c644d3db5b0a757e3a9b6ea,

title = "Discovery of the afterglow and host galaxy of the low-redshift short GRB 080905A",

abstract = "We present the discovery of short GRB 080905A, its optical afterglow and host galaxy. Initially discovered by Swift, our deep optical observations enabled the identification of a faint optical afterglow, and subsequently a face-on spiral host galaxy underlying the GRB position, with a chance alignment probability of <1 per cent. There is no supernova component present in the afterglow to deep limits. Spectroscopy of the galaxy provides a redshift of z= 0.1218, the lowest redshift yet observed for a short GRB. The GRB lies offset from the host galaxy centre by ~ 18.5 kpc, in the northern spiral arm which exhibits an older stellar population than the southern arm. No emission lines are visible directly under the burst position, implying little ongoing star formation at the burst location. These properties would naturally be explained were the progenitor of GRB 080905A a compact binary merger.",

author = "{Rowlinson...[et al.]}, A. and K. Wiersema and Levan, {A. J.} and Jens Hjorth and Christina Th{\"o}ne and Fynbo, {Johan Peter Uldall}",

year = "2010",

month = oct,

day = "11",

doi = "10.1111/j.1365-2966.2010.17115.x",

language = "English",

volume = "408",

pages = "383--391",

journal = "Royal Astronomical Society. Monthly Notices",

issn = "0035-8711",

publisher = "Oxford University Press",

number = "1",

}

TY - JOUR

T1 - Discovery of the afterglow and host galaxy of the low-redshift short GRB 080905A

AU - Rowlinson...[et al.], A.

AU - Wiersema, K.

AU - Levan, A. J.

AU - Hjorth, Jens

AU - Thöne, Christina

AU - Fynbo, Johan Peter Uldall

PY - 2010/10/11

Y1 - 2010/10/11

N2 - We present the discovery of short GRB 080905A, its optical afterglow and host galaxy. Initially discovered by Swift, our deep optical observations enabled the identification of a faint optical afterglow, and subsequently a face-on spiral host galaxy underlying the GRB position, with a chance alignment probability of <1 per cent. There is no supernova component present in the afterglow to deep limits. Spectroscopy of the galaxy provides a redshift of z= 0.1218, the lowest redshift yet observed for a short GRB. The GRB lies offset from the host galaxy centre by ~ 18.5 kpc, in the northern spiral arm which exhibits an older stellar population than the southern arm. No emission lines are visible directly under the burst position, implying little ongoing star formation at the burst location. These properties would naturally be explained were the progenitor of GRB 080905A a compact binary merger.

AB - We present the discovery of short GRB 080905A, its optical afterglow and host galaxy. Initially discovered by Swift, our deep optical observations enabled the identification of a faint optical afterglow, and subsequently a face-on spiral host galaxy underlying the GRB position, with a chance alignment probability of <1 per cent. There is no supernova component present in the afterglow to deep limits. Spectroscopy of the galaxy provides a redshift of z= 0.1218, the lowest redshift yet observed for a short GRB. The GRB lies offset from the host galaxy centre by ~ 18.5 kpc, in the northern spiral arm which exhibits an older stellar population than the southern arm. No emission lines are visible directly under the burst position, implying little ongoing star formation at the burst location. These properties would naturally be explained were the progenitor of GRB 080905A a compact binary merger.

U2 - 10.1111/j.1365-2966.2010.17115.x

DO - 10.1111/j.1365-2966.2010.17115.x

M3 - Journal article

SN - 0035-8711

VL - 408

SP - 383

EP - 391

JO - Royal Astronomical Society. Monthly Notices

JF - Royal Astronomical Society. Monthly Notices

IS - 1

ER -

Discovery of the afterglow and host galaxy of the low-redshift short GRB 080905A

Abstract

Adgang til dokumentet

Fingeraftryk

Citationsformater