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Spectroscopic confirmation of the recent eruption of M31N 2008-12a

ATel #6537; Y. Cao (Caltech), J. Johansson, F. Taddia, J. Sollerman (OKC) On behalf of the intermediate Palomar Transient Factory
on 4 Oct 2014; 07:26 UT
Credential Certification: Yi Cao (ycao@astro.caltech.edu)

Subjects: Optical, Nova

Referred to by ATel #: 6540, 6543, 6546

We obtained a spectrum of the recent eruption candidate of M31N 2008-12a (ATel#6527) with the Andalucia Faint Object Spectrograph and Camera mounted on the Nordic Optical Telescope on Oct 4.11 UT. Similar to the spectrum taken during the last eruption, this spectrum shows a weak continuum superposed by strong emission lines, including Balmer series, He I 4472, 5015, 5876, 6678 and 7065, N III 4640 and NII 5679. Halpha has a FWHM of about 2,200 km/s. This spectrum confirms that this optical transient is another nova eruption of M31N 2008-12a.