Classification of Gaia16ace as type Ia supernova near maximum
ATel #8676; A. S. Piascik, I. A. Steele (Liverpool JMU)
on 11 Feb 2016; 12:17 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Iain Steele (iainsteele@mac.com)
Subjects: Optical, Supernovae
We conducted a spectroscopic observation of transient Gaia16ace at
2016-02-11T02:56:31 UT. The transient was discovered by the Gaia Photometric
Science survey on 2016-02-03T22:43:39 UT at position RA=13:48:32.33 DEC=-02:03:33.6.
A spectrum was obtain in the visible, 400-800nm, with resolution R~350,
using the SPRAT spectrograph on the Liverpool Telescope located at Roque
de los Muchachos.
Classification using SNID (Blondin and Tonry 2007, ApJ, 666, 1024)
indicates it is a type Ia supernova. We find a close match with SN2006cm
at -1 days with an estimated red-shift of z=0.085.
Galaxy SDSS J134832.23-020333.8 is 1.6 arcsec from the transient and has
a red-shift z=0.0822 (from NED).
The ejecta velocity estimated from the Si II absorption feature at 635.5
nm is ~10,700 km/s.
Liverpool Telescope
