GCN Circular 15165
Subject
GRB 130831A: RATIR Optical and NIR Observations
Date
2013-09-02T02:52:18Z (11 years ago)
Edited On
2024-11-07T18:56:26Z (3 months ago)
From
Nat Butler at Az State U <natbutler@asu.edu>
Edited By
Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>
Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William
H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB),
J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UCSC),
Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC),
José A. de Diego (UNAM), Leonid Georgiev (UNAM), Jesús González (UNAM),
Carlos Román-Zúñiga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC)
report:
We observed the field of GRB 130831A (Hagen, et al., GCN 15139) with the
Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the
1.5m Harold Johnson Telescope at the Observatorio Astronómico Nacional on
Sierra San Pedro Mártir from 2013/09 1.16 to 2013/09 1.49 UTC (14.65 to
22.73 hours after the BAT trigger), obtaining a total of 5.16 hours
exposure in the r' and i' bands and 2.09 hours exposure in the Z, Y, J, and
H bands.
For a source within the Swift-XRT error circle (Evans et al., GCN 15147),
in comparison with SDSS DR9 and 2MASS, we obtain the following detections:
r' 20.64 +/- 0.03
i' 20.38 +/- 0.03
Z 20.20 +/- 0.07
Y 19.69 +/- 0.07
J 19.87 +/- 0.09
H 19.88 +/- 0.14
These magnitudes are in the AB system and not corrected for Galactic
extinction in the direction of the GRB.
We thank the staff of the Observatorio Astronómico Nacional in San
Pedro Mártir.