[vsnet-grb-info 17734] GRB 160313A: RATIR Optical and NIR Observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  19173
SUBJECT: GRB 160313A: RATIR Optical and NIR Observations
DATE:    16/03/13 05:53:49 GMT
FROM:    Antonino Cucchiara at NASA/GSFC  <antonino.cucchiara at nasa.gov>

Antonino Cucchiara (GSFC/STScI), Nat Butler (ASU), Alan M. Watson
(UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G.
Richer (UNAM), Ori Fox (STScI), J. Xavier Prochaska (UCSC), Josh Bloom
(UCB), 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),
Harvey Moseley (GSFC), John Capone (UMD), V. Zach Golkhou (ASU), and
Vicki Toy (UMD) report:

We observed the field of GRB 160313A (D'Ai, et al., GCN 19171) 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 2016/03 13.14 to 2016/03 13.22 UTC (0.63
to 2.67 hours after the BAT trigger), obtaining a total of 1.42 hours
exposure in the r and i bands and 0.52 hours exposure in the Z,
Y, J, and H bands.


For a source within the Swift-XRT error circle, in comparison with the 
SDSS DR9 and 2MASS catalogs, we obtain the following upper limits (3-sigma):

  r	> 23.49
  i	> 23.21
  Z	> 22.08
  Y	> 21.48
  J	> 20.11
  H	> 20.60

These magnitudes are in the AB system and are not corrected for Galactic
extinction in the direction of the GRB. Further observations are planned.

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