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The discovery of DLT17ar/AT 2017cyy with PROMPT

ATel #10260; L. Tartaglia (TTU, UC Davis), D. Sand, S. Wyatt (TTU), S. Valenti, K. A. Bostroem (UC Davis), D. E. Reichart, J. B. Haislip, V. Kouprianov (UNC)
on 12 Apr 2017; 18:22 UT
Distributed as an Instant Email Notice Transients
Credential Certification: Leonardo Tartaglia (ltartaglia@ucdavis.edu)

Subjects: Optical, Supernovae, Transient

We report the discovery of DLT17ar/AT 20cyy. The object was discovered on 2017-04-11.18 UT at R~18.68 mag, during the ongoing D<40 Mpc (DLT40) one day cadence supernova search, using data from the PROMPT 5 0.41m telescope located at CTIO. A confirmation image was obtained with the same instrument on 2017-04-12.08 UT, where the transient was detected at R~17.59 mag. DLT17ar/AT 2017cyy is located at RA: 09:36:36.29 Dec: -63:56:54.5, (+23.72''E, -14.50'' N offset from the center of the host galaxy ESO091-015). We do not detect the transient (R>19.9 mag) on 2017-04-10.04 UT or in prior imaging of the field. All images were taken in a 'Clear' filter which was calibrated to an approximate R-band magnitude using the USNO-B1 catalog. Further observations are encouraged.