Padova-Asiago Supernova Group
Asiago Classification Program
Gaia14adb in SDSS J120512.03+2150   Discovered by: Gaia
Object type   SN   Ia
download fits file

Reference:   ATEL6750  

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of Gaia14adb (Date 20141125.10 UT, z =0.053) as a type-Ia SN, around 20d after maximum light. The observations were performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.2 nm). The transient is close to SDSS galaxy SDSS J120512.03+215018.1, with photometric redshift z=0.05. The spectrum shows this is a type-Ia SN about 2 weeks after the maximum light. An expansion velocity of 9500 km/s is derived from the position of the minimum of the Si II 635.5-nm line. We acknowledge, for the Gaia transients, ESA Gaia (http://cosmos.esa.int/gaia), and the DPAC Photometric Science Alerts Team (http://gaia.ac.uk/selected-gaia-science-alerts) (Rixon et al, 2014, ATel #6593).