VizieR Online Data Catalog: GRB 161023A light curves and EW (de Ugarte Postigo+, 2018)

GRB161023A was first identified by INTEGRAL (INTErnational Gamma-Ray Astrophysics Laboratory) as a long gamma-ray burst that triggered the IBIS (Imager on-Board the INTEGRAL Satellite) detector at 22:38:40 UT on 23 October 2016 (Mereghetti et al., 2016GCN.20103....1M), which we use as the trigger reference time T0.

The X-shooter spectrograph, installed on ESO's Very Large Telescope (Chile) observed the optical counterpart of GRB161023A at a mean epoch 2.795hrs after the burst.The observation consisted of 2x600s exposures covering the spectral range between 3000 and 24800Å. In the X-shooter spectrum we identify numerous absorption features (see tablea2.dat).

We present the observations performed with the 0.4m Watcher telescope, the 0.25m TAROT La Silla telescope, the 2.0m Faulkes South telescope, the 1.0m Zadko Gingin telescope, and the 2.2m MPG telescope with GROND. Our photometric data set also includes an r'-band observation obtained during the acquisition of the X-shooter spectrum at ESO's Very Large Telescope (VLT). We have added observations obtained using the FORS2 (FOcal Reducer/low dispersion Spectrograph 2) instrument at the VLT as part of a different programme (Wiersema et al. in prep.). Finally, we include a deep observation obtained with FORS2 in March 2018 in search of the host galaxy, which remains undetected down to a strong 3-σ limit of 26.5mag. The photometry of all these data was obtained based on Sloan magnitudes of secondary standard stars based on GROND observations of SDSS (Sloan Digital Sky Survey) fields. In the case of FORS2 the observations performed with the Rspecial filter were calibrated directly with the Sloan r'. The photometric data are presented in tablea1.dat.

(2 data files).