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Discovery and Spectroscopic Classification of DLT18q/AT2018aoz as a young type Ia Supernova

ATel #11496; D. Sand (Arizona), S. Valenti (UC Davis), S. Wyatt (Arizona), K. A. Bostroem (UC Davis), D. E. Reichart, J. B. Haislip, V. Kouprianov (UNC)
on 2 Apr 2018; 16:19 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: David Sand (dave.j.sand@gmail.com)

Subjects: Optical, Supernovae

Referred to by ATel #: 11511

We report the discovery and classification of DLT18q/AT 2018aoz. The supernova was found on 2018 April 02.1 (UT) at r~15.1 mag during the ongoing D<40 Mpc (DLT40) supernova search, using data from the PROMPT5 0.41m telescope located at CTIO. An inspection of earlier epochs shows the presence of the supernova in our data as early as 2018 March 30.1 (UT). An optical spectrum from the robotic FLOYDS spectrograph at Siding Springs, Australia was obtained on 2018 April 2.39. Spectral classification was performed with SNID (Blondin and Tonry 2007, ApJ, 666, 1024), with good matches to normal type Ia supernovae approximately two weeks before maximum light. The velocity of the ejecta, as measured from SiII 635.5 nm, is around 14000 km/s. We encourage further observations.