SAO RAS SN candidates classifications
ATel #9325; Fatkhullin T. A., Moskvitin A. S. (SAO RAS, Russia)
on 5 Aug 2016; 14:38 UT
Credential Certification: Timur Fatkhullin (timur@sao.ru)
Subjects: Optical, Supernovae, Transient
We observed SN candidates (AT 2016eow, AT 2016enu and AT 2016enf) with the
BTA/Scorpio-I on August, 4. Direct images in the R band and long-slit spectra in
the range of 3600-7600AA (resolution FWHM = 10A) were obtained. The spectra
were cross-correlated with the SNID library (Blondin & Tonry, ApJ, 666, 1024, 2007).
The results are summarized below:
AT2016eow spectral observations were started from 4 August 2016, 18:09 UT.
The spectrum is best matched to one of the Type Ic near the maximum of light.
The redshift from the fit is 0.175+/-0.01.
AT2016enu spectral observations were started from 4 August 2016, 20:10 UT.
The spectrum is best matched to the normal Type Ia a few days after the maximum.
The redshift from the fit is 0.042+/-0.004.
AT2016enf spectral observations were started from 4 August 2016, 21:19 UT.
The spectrum resembles a Type I supernova but still no definite conclusion may be
done about subtype of the event. A number of emission lines ([O II] 3727A,
Hbeta and [O III] 4959,5007A) were detected in the spectrum. The corresponding
redshift is 0.291 +/- 0.006. Following this measurement we note that at the moment
of our observations the absolute magnitude of the object was about -20.3 in R-band.
