[vsnet-grb-info 24400] LIGO/Virgo S191213g: GRAWITA TNG NIR imaging of AT2019wxt (PS19hgw)

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  26499
SUBJECT: LIGO/Virgo S191213g: GRAWITA TNG NIR imaging of AT2019wxt (PS19hgw)
DATE:    19/12/19 09:35:40 GMT
FROM:    Paolo D'Avanzo at INAF-OAB  <pda.davanzo at gmail.com>

P. D'Avanzo, A. Melandri (INAF-OAB), E. Cappellaro, N. Elias-Rosa (INAF-OAPd), M. T. Botticella (INAF-OAC), 
S. Piranomonte, R. Carini (INAF-OAR), A. Rossi, E. Palazzi (INAF-OAS), E. Brocato (INAF-OAA; INAF-OAR), 
A. Fiorenzano, D. Carosati (INAF-TNG), report on behalf of GRAWITA:

We obtained NIR observations of the faint transient AT2019wxt (PS19hgw; McBrien et al., GCN Circ. 26845), 
possibly associated with the gravitational wave event S191213g (LVC, GCN Circ. 26402), with the 3.58m TNG 
telescope equipped with NICS in imaging mode. A series of images were obtained with the J filter on 2019-12-18 
from 19:16:04 to 19:59:02 UT (i.e. about 5.6 days after the GW event). 

The transient is clearly detected with a magnitude J(AB) = 19.6 +/- 0.1 (obtained from preliminary psf photometry 
calibrated against the 2MASS catalogue and subtracting the host galaxy contribution).