GCN Circular 31242
Subject
GRB 211211A: TNG NIR observations
Date
2021-12-16T12:40:41Z (3 years ago)
From
Paolo D'Avanzo at INAF-OAB <pda.davanzo@gmail.com>
P. D'Avanzo (INAF-OAB), A. Rossi (INAF-OAS), D. B. Malesani (Radboud), V. D'Elia (ASI-SSDC), A. Melandri (INAF-OAB),
M. De Pasquale (Univ. Messina), S. Piranomonte (INAF-OAR), G. Andreuzzi, A. Garcia de Gurtubai (INAF-TNG)
on behalf of the CIBO collaboration report:
We observed the field of GRB 211211A (D���Ai et al., GCN Circ. 31202) with the Italian 3.6m TNG telescope equipped with the
near-infrared camera NICS. A series of images were obtained with the H filter on 2021-12-16 from 05:51:36 UT to 07:00:51 UT
(i.e. at a mid time of about 4.7 days after the burst).
No source is detected at the optical and NIR counterpart position (Zheng & Filippenko, GCN Circ. 31203; Levan et al., GCN Circ.
31235) down to the following 3sigma upper limit:
H > 20.5 (Vega) or H > 21.9 (AB)
(calibrated against the 2MASS catalogue).