[vsnet-grb-info 18247] GRB 160712A: RATIR Optical and NIR Observations

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  19695
SUBJECT: GRB 160712A: RATIR Optical and NIR Observations
DATE:    16/07/13 13:46:19 GMT
FROM:    Eleonora Troja at GSFC  <eleonora.troja at nasa.gov>

GRB 160712A: RATIR Optical and NIR Observations

Eleonora Troja (GSFC), 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), Antonino Cucchiara (GSFC/STScI), 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 160712A (Hagen, et al., GCN 19684)
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
2016/07 13.21 to 2016/07 13.42 UTC (9.05 to 14.30 hours after the
BAT trigger), obtaining a total of 3.56 hours exposure in the r
and i bands and 1.45 hours exposure in the Z, Y, J, and H bands.

We detect a source slightly outside of the XRT error circle
(Beardmore, et al., GCN 19690), and consistent with the GROND
position (Kruehler, et al., GCN 19693). In comparison with the
USNO-B1 and 2MASS catalogs, we obtain the following detections:

   r    22.77 +/- 0.08
   i    21.55 +/- 0.03
   Z    20.93 +/- 0.05
   Y    20.44 +/- 0.05
   J    20.27 +/- 0.06
   H    20.15 +/- 0.08

These magnitudes are in the AB system and are not corrected for
Galactic extinction in the direction of the GRB.
Further observations to determine whether the source is fading
are planned.

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