SLX 1746-331 - corrected location for near-infrared counterpart
ATel #15950; M. A.P. Torres (IAC/ULL), P. G. Jonker (SRON/Nijmegen), M. T. Reynolds (Michigan), D. Steeghs (Warwick)
on 17 Mar 2023; 13:19 UT
Credential Certification: Manuel Torres (mtorres@cfa.harvard.edu)
Subjects: Infra-Red, Black Hole, Neutron Star, Transient
ATels #1252 and #1633 reported the discovery of the variable near-infrared counterpart
to SLX 1746-331 from observations taken during 2007 and 2008 with the PANIC camera mounted on the 6.5m Magellan Baade telescope at Las Campanas observatory. Joshi et al. 2023 (ATel #15949) have identified the
optical counterpart to SLX 1746-331 from observations during the on-going 2023 outburst.
Given that its location is in disagreement with that provided for the infrared counterpart (ATel #1252), we have reviewed the analysis of the PANIC data. We regret to inform that the coordinates of an unrelated field star were erroneously reported in ATel #1252 instead of the counterpart location. The correct coordinates for the near-infrared counterpart to SLX 1746-331 are R.A(J2000)=17:49:48.96 and Dec(J2000) = -33:12:17.1, with 0.1 arcsec uncertainty and in agreement with the optical counterpart coordinates.
Note that the K-band variability reported in ATels #1252 and #1633 correspond to the true near-infrared counterpart and that this was correctly marked in the finding chart provided in ATel #1252. The finder is at present available at the BlackCAT catalogue (https://www.astro.puc.cl/BlackCAT/references.php).
