GCN Circular 42760
Subject
EP251118a: VLT near-infrared observation
Event
Date
2025-11-19T13:22:26Z (2 days ago)
From
muskan.yadav@students.uniroma2.eu
Via
Web form
Muskan Yadav, Yu-Han Yang, Massine El Kabir, Niccolò Passaleva, Nicolás Monsalves (U Rome) on behalf of the ERC BHianca team:
We observed the field of EP251118a (Jiang et al., GCN 42749) with the HAWKI imager on the ESO VLT UT4 (Yepun). Observations began at 15.5 hr after the EP/WXT trigger and were carried out at an average airmass of about 1.2 in the J filter.
We detect the optical counterpart (Malesani et al., GCN 42751; Belkin et al., GCN 42758) at a preliminary magnitude J ~20.35 AB mag calibrated using nearby stars in the 2MASS Catalogue (Skrutskie et al. 2006) and not corrected for Galactic extinction.
We thank the staff at the VLT, for the rapid execution of these observations.