GCN Circular 15310
Subject
GRB131004A: TNG Redshift confirmation
Event
Date
2013-10-05T09:32:49Z (13 years ago)
From
Valerio D'Elia at ASDC <delia@asdc.asi.it>
V. D'Elia (INAF-OAR/ASDC), P. D'Avanzo (INAF-OAB), D. Malesani (DARK/NBI),
L. di Fabrizio, G. Tessicini (INAF-TNG) report on behalf of the CIBO
collaboration:
We observed the optical afterglow (Xu et al., GCN 15304; Malesani et
al., GCN 15305; Kopac et al., GCN 15306) of the possible short GRB
131004A (Hagen et al., GCN 15303) using DOLORES/LR-B (wavelength
range: 3000-8000 AA) on the 4-m TNG Telescope at Canary islands. We
obtain a 1800 s spectrum starting at 2013-10-04 23:00:38 UT, i.e.,
1.33 hr from the burst.
A preliminary reduction reveals weak emission lines from [O II],
H-gamma and H-delta at a common redshift of 0.71.
We thus confirm the redshift reported by Chornock et al. (GCN 15307).
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