TITLE: GCN CIRCULAR NUMBER: 9286 SUBJECT: GRB090429B: Gemini-N infrared IR candidate DATE: 09/04/29 10:45:17 GMT FROM: Antonino Cucchiara at PSU A. Cucchiara (PSU), A. Levan (U. Warwick), N. Tanvir (U. Leicester), D. B. Fox (PSU) and E. Berger (Harvard U.) report: "On April 29.35 UT we imaged the field of Swift GRB 090429 (Ukwatta et al., GCN 9281) with NIRI on the Gemini-North telescope. We obtained images in J,H and K for a total exposure time of 9, 4.5 and 9 minutes respectively. In the coadded images we identify a possible IR counterpart inside the XRT error circle at the coordinates: RA (J2000): 14:02:40.05 Dec (J2000): +32:10:14.32 with an uncertainty of 0.5". The estimated magnitude are: J = 21.79 +- 0.1 H = 20.08 +- 0.05 K = 19.15 +- 0.03 These values are calibrated using the 2MASS star at RA=14:02:42.20, Dec= +32:10:50.36. Although variability remains to be confirmed, the red J-H colour, coupled with the relatively blue (H-K) is suggestive of a break. Although this may be caused by dust the lack of apparent excess N_H in the X-ray spectrum (GCN 9281) suggests this may not be the case. Hence GRB 090429B should be considered a high-z candidate." We thank the Gemini-N staff for the support in performing this observations, in particular Scott Fisher and Kathy Roth."