[vsnet-grb-info 12893] GRB 130215A: Continued RATIR Optical and NIR Monitoring

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  14237
SUBJECT: GRB 130215A: Continued RATIR Optical and NIR Monitoring
DATE:    13/02/18 09:24:53 GMT
FROM:    Nat Butler at Az State U  <natbutler at asu.edu>

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), 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 continue to observe the field of GRB 130215A (D'Elia et al.; GCN 14204)
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 2013/02 18.13 to 2013/02
18.21UTC (73.5 to 75.5 hours after the BAT trigger), we obtained a
total of 1.40
hours exposure in the r' and i' bands and 0.53 hours of exposure in the Z,
Y, J, and H bands.

In comparison with USNO-B1 and 2MASS, we derive the following AB
magnitudes, not corrected for Galactic extinction in the direction of the
GRB, for the afterglow:

  r'  21.92 +/- 0.09
  i'  20.92 +/- 0.07
  Z   20.21 +/- 0.12
  Y   20.38 +/- 0.15
  J   20.37 +/- 0.13
  H   19.59 +/- 0.11

We thank the staff of the Observatorio Astronómico Nacional in San Pedro
Mártir.