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Asiago spectroscopic classification of Gaia14acq and two MASTER transients

ATel #6640; G. Terreran, M. Miluzio, P. Ochner, S. Benetti, L. Tomasella, E. Cappellaro, N. Elias-Rosa, A. Pastorello, L. Tartaglia, M. Turatto (INAF Osservatorio Astronomico di Padova)
on 29 Oct 2014; 08:32 UT
Credential Certification: Lina Tomasella (lina.tomasella@oapd.inaf.it)

Subjects: Optical, Supernovae

Referred to by ATel #: 6641, 6712, 6719, 6755, 7351

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic classification of three supernovae.

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   
MASTER OT J120451.50+265946.6| 20141028.14  |   0.00189   |    Ib       |  ~3 weeks  | (1) 
MASTER OT J113930.78+251141.0| 20141028.12  |   0.01226   |    II       |  ~1 month  | (2) 
Gaia14acg                    | 20141028.17  |   0.03145   |    Ic       |  around max| (3) 

(1) Host galaxy NGC 4080; from the distance modulus m-M=28.74 (Virgo + GA + Shapley) and the magnitude at discovery, we deduce an absolute magnitude around -14.8 mag. Discovered by MASTER robotic Net (Atel #6634, #6639).

(2) Host galaxy PGC 2817170; discovered by MASTER robotic Net (Atel #6595).

(3) The transient Gaia14acg was detected by the Gaia Photometric Science Alerts programme with a magnitude of 17.8 at UT 2014 Oct. 23. BP and RP spectra indicated a likely SN. The host galaxy is UGC 8352, at z = 0.031145 (Huchra et al. 1995, ApJS 99, 391 via NED).

Classifications were 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