Spectral Classifications of ASASSN-16ex and PTSS-16efwk

ATel #9023; A. S. Piascik, I. A. Steele (Liverpool JMU)
on 5 May 2016; 16:19 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Iain Steele (iainsteele@mac.com)

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We conducted a spectroscopic observation of transient ASASSN-16ex (AT2016ccj) at 2016-05-05T02:40:26 UT. This transient was reported by the All Sky Automated Survey for SuperNovae (ASAS-SN) in ATel #9020 at position RA = 17:10:23.919, DEC= +26:23:47.89. Classification using SNID (Blondin and Tonry 2007, ApJ, 666, 1024) indicates it is an early phase type Ia supernova, sub-type Ia-pec. We find a good match with SN2006gz at -9 days with at SNID estimated red-shift of z=0.040 The transient is 0.076 arcmin from the proposed host galaxy, SDSS 171023.63+262350.3, no redshift available (source NED).

We conducted a spectroscopic observation of transient PTSS-16efwk (AT2016cck) at 2016-05-05T02:23:52 UT. This transient was observed by PMO-Tsinghua Supernova Survey (PTSS) on 2016-05-03T18:31:41 UT at position RA = 17:35:37.80, DEC = +08:48:32.35 Classification using SNID (Blondin and Tonry 2007, ApJ, 666, 1024) indicates it is a type Ia supernova near maximum. We find a good match with SN1999cc at -1 day with at SNID estimated red-shift of z=0.041. The transient is 0.107 armin from galaxy 2MASX J17353788+0848387, no redshift available (source NED).

Both spectra were obtained in the visible, 400-800nm, with resolution R~350, using the SPRAT spectrograph on the Liverpool Telescope located at Roque de los Muchachos, La Palma.

Liverpool Telescope