PS19mq (AT2019ape): PSST discovery of a candidate SN in NGC 3426 (90 Mpc)
ATel #12483; K. W. Smith, S. J. Smartt, D. R. Young (Queen's University Belfast), D. E. Wright (University of Minnesota), K. C. Chambers, H. Flewelling, M. Huber, T. Lowe, E. Magnier, A. Schultz, C. Waters, R. J. Wainscoat, M. Willman, L. Denneau, A. Heinze, J. Tonry, H. Weiland (IfA, University of Hawaii), B. Stalder (LSST) A. Rest (STScI)
on 8 Feb 2019; 01:51 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Ken Smith (k.w.smith@qub.ac.uk)
Subjects: Optical, Supernovae
We report the discovery of the following transient object as part of the Pan-STARRS Survey for Transients (PSST). Information on all objects discovered by the Pan-STARRS Survey for Transients is available at http://star.pst.qub.ac.uk/ps1threepi/ (see Chambers et al. arXiv:1612.05560, Huber et al. ATel #7153).
The new transient source, most likely a supernova is in the galaxy NGC 3426. We discovered PS19mq (AT2019ape) on MJD 58519.39 == 2019-02-05.39, at m_w = 18.57 +/- 0.02. PS19mq is offset by 1.73 arcsec north, 11.07 arcsec east from NGC 3426, which is at z = 0.020 or d = 89.9 Mpc (from NED), implying an absolute magnitude of M = -16.28 (assuming m-M = 34.77 and A_r = 0.081). A summary of the transient's properties is displayed below.
Name | PS Name | RA (J2000) | Dec (J2000) | Disc. MJD | Disc Mag | Offset from host
AT2019ape | PS19mq | 10:51:42.53 | +18:28:52.7 | 58519.39 | 18.57 w | 11.17 arcsec
Examination of ATLAS images from MJD 58517 (2019-02-03) shows no 5 sigma detection to about 19 mag. Spectroscopic observations are encouraged.