GCN Circular 7771
Subject
GRB 080520: VLT host detection
Event
Date
2008-05-24T15:19:17Z (18 years ago)
From
Daniele Malesani at Niels Bohr Inst,Dark Cosmology Center <malesani@astro.ku.dk>
D. Malesani (DARK), P. Jakobsson (Univ. Hertfordshire), J. P. U. Fynbo,
J. Hjorth, B. Milvang-Jensen (DARK), report on behalf of a larger
collaboration:
We further inspected our images and spectra (Jakobsson et al., GCN 7757)
of the afterglow of GRB 080520 (Grupe et al., GCN 7753). A faint
extension is visible in our images (seeing 0.7") underlying the
afterglow emission, which may be due to a relatively bright host galaxy.
This is consistent with the 2D trace of the spectrum, which reveals the
proposed [O II] line to be also spatially extended.
Using the relations by Kennicutt (1998, ARA&A, 36, 189), the flux of the
[O II] line (not corrected for extinction) corresponds to a star
formation rate (SFR) of approximately 15 M_Sun/yr.