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Asiago spectroscopic classification of Gaia14act as a Type-II SN

ATel #6646; V. Granata (DFA University of Padova), L. Tomasella, S. Benetti, E. Cappellaro, N. Elias-Rosa, P. Ochner, A. Pastorello, M. Turatto (INAF OAPd), L. Borsato A. Cunial, V. Nascimbeni, G. Piotto (DFA University of Padova)
on 30 Oct 2014; 09:31 UT
Credential Certification: Lina Tomasella (lina.tomasella@oapd.inaf.it)

Subjects: Optical, Supernovae

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of Supernova Gaia14act near SDSS J122021.24+282448.1.

The observations were performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.2 nm).

Name                         | Date (UT)    |     z       |   Type      |  Phase       | Notes   
Gaia14act                    | 20141030.15  |   0.027     |    II       |  ~2-3 months | (1) 

(1) The redshift z of the host galaxy SDSS J122021.24+282448.1 (2MASX J12202126+2824502) is derived from Sloan Digital Sky Survey Data Release 6 as obtained Sep. 17, 2007 from http://www.sdss.org/dr6/products/catalogs/index.html, via NED.

The transient Gaia14act was detected by the Gaia Photometric Science Alerts programme with a magnitude of 18.4 at UT 2014 Oct. 26.25. BP and RP spectra indicated a likely SN. The candidate was recovered at RA= 12:20:22.5, DEC= +28:24:51.4 (J2000), corresponding to an offset with respect to the parent galaxy nucleus of 16'' E 3''.5 N, with magnitude r=19.04[0.12], i=18.66[0.92].

Classification was done with GELATO (Harutyunyan et al. 2008, A&A, 488, 383) and SNID (Blondin and Tonry 2007, ApJ, 666, 1024). The Asiago classification spectra are posted at the website http://sngroup.oapd.inaf.it.

We acknowledge 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).

Padova Asiago SN group