{
  "createdOn": 1393528701000,
  "bibcode": "2014GCN.15886....1C",
  "editedOn": 1731005189257,
  "body": "Antonino Cucchiara (ORAU/GSFC), Nat Butler (ASU), Alan M. Watson (UNAM), \nAlexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), \nChris Klein (UCB), Ori Fox (UCB), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), \nEleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), \nJosé A. de Diego (UNAM), Leonid Georgiev (UNAM), Jesús González (UNAM), \nCarlos Román-Zúñiga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report:\n\nWe observed the field of the transient iPTF14yb (Cenko et al., GCN 15883, Beardmore et al.,\nGCN 15884) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) \non the1.5m Harold Johnson Telescope at the Observatorio Astronómico Nacional on\nSierra San Pedro Mártir from 2014/02 27.28 to 2014/02 27.54 UTC (20.53 to 26.68 hours \nafter the reported time of discovery), obtaining a total of 3.91 hours exposure in the \nr and i bands and 1.64 hours exposure in the Z, Y, J, and H bands.\n\nFor the source reported by Cenko et al. (GCN 15883), in comparison with the \nSDSS DR9 and 2MASS, we obtain the following detections and upper limit (3-sigma):\n\n r\t22.28 +/- 0.09\n i\t22.02 +/- 0.09\n Z\t21.98 +/- 0.24\n Y\t22.12 +/- 0.35\n J\t21.88 +/- 0.35\n H\t> 21.59\n\nThese magnitudes are in the AB system and are not corrected for Galactic\nextinction in the direction of the transient.\n\nOur photometry indicates that the transient is fading in r band according to a\nsingle power law with temporal index alpha=1.04. This behavior is also typical\nof a long gamma-ray burst type transient as suggested by Cenko et al. (GCN 15883)\n\nWe thank the staff of the Observatorio Astronómico Nacional in San Pedro \nMártir.",
  "circularId": 15886,
  "email": "antonino.cucchiara@nasa.gov",
  "editedBy": "Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>",
  "submitter": "Antonino Cucchiara at NASA/GSFC  <antonino.cucchiara@nasa.gov>",
  "subject": "iPTF14yb: RATIR Optical and NIR Observations of the optical transient",
  "version": 2,
  "format": "text/plain"
}