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Spectral classification of Gaia16alq as type Ia SN

ATel #8991; A. S. Piascik, I. A. Steele (Liverpool JMU)
on 27 Apr 2016; 10:38 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Iain Steele (iainsteele@mac.com)

Subjects: Optical, Supernovae, Transient

Referred to by ATel #: 9100

We conducted a spectroscopic observation of transient Gaia16alq at 2016-04-27T04:24:34 UT. This transient was observed by the Gaia Photometric Science survey on 2016-04-21T15:08:45 UT at position RA = 18:12:29.40, DEC = 31:16:47.30.

A spectrum was 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.

Classification using SNID (Blondin and Tonry 2007, ApJ, 666, 1024) indicates it is a type Ia supernova. We find close matches with SN2000dn and SN2007bd at -1 day and a SNID estimated red-shift of z=0.020 - 0.027

Liverpool Telescope