Discovery of DLT18y/AT2018cdc with PROMPT and the DLT40 Survey
ATel #11678; D. Sand (Arizona), S. Valenti (UC Davis), S. Wyatt (Arizona), S. Yang (INAF-OAPd), D. E. Reichart, J. B. Haislip, V. Kouprianov (UNC)
on 1 Jun 2018; 22:46 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: David Sand (dave.j.sand@gmail.com)
Subjects: Optical, Supernovae
Referred to by ATel #: 11704
We report the discovery of DLT18y/AT 2018cdc, which was first imaged by the PROMPT5 0.41m telescope at CTIO on 2018 June 01.42 (UT) at r~16.9 mag during the ongoing D<40 Mpc (DLT40) sub-day cadence supernova search. A confirmation image was obtained on 2018 June 01.83 (UT) with the PROMPT telescope at Meckering Observatory, with an r~17.05 mag. DLT18y is located at RA: 00:51:05.24 DEC: -07:03:47.0 (~0.9 arcmin from the potential host galaxy NGC274). We do not detect the transient on 2018 Jan 06.35 (UT) or in prior imaging of the field. Since there is such a large gap between observations, and that the magnitude declines in our two detections, there is a chance that this is an older SN. All images were taken in a 'Clear' (PROMPT5) or 'Open' (PROMPT-MO) filter which was calibrated to an approximate r-band magnitude. Further observations are encouraged.
