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Asiago spectroscopic observation of the two SN candidates ASASSN-15ug and ASASSN-15uh

ATel #8439; M. Turatto, P. Ochner, A., S. Benetti, L. Tomasella, E. Cappellaro, N. Elias-Rosa, Pastorello, L. Tartaglia, G. Terreran, (INAF Osservatorio Astronomico di Padova)
on 19 Dec 2015; 10:52 UT
Credential Certification: Enrico Cappellaro (enrico.cappellaro@oapd.inaf.it)

Subjects: Optical, Supernovae

Referred to by ATel #: 8543

The Asiago Transient Classification Program (Tomasella et al. 2014, AN, 335, 841) reports the spectroscopic observation of two probable SNe, ASASSN-15ug and ASASSN-15uh (ATEL #8436).

The observation was performed with the Asiago 1.82 m Copernico Telescope (+AFOSC; range 340-820 nm; resolution 1.4 nm).

  
Name             | Discovery UT     | Obs. Date UT |   z       |   Type   | Phase      |Notes  
ASASSN-15ug      | 20151218.34      | 20151218.94  |           |    ?     |            | (1)    
ASASSN-15uh      | 20151218.50      | 20151219.13  | 0.0135    |   Ia-Pec | pre-max    | (2)   
 

(1) The low S/N spectrum shows a blue featureless continuum consistent with different types of core-collapse SNe at early phase. (2) Best match with the bright type Ia SN 1998es, 10 days before B-band maximum light.

Classification 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.