The Spectroscopic Class of M31N 2007-12d
ATel #1341; A. W. Shafter (SDSU)
on 21 Dec 2007; 20:26 UT
Credential Certification: Allen W. Shafter (aws@nova.sdsu.edu)
A spectrum (410-950 nm) of the recent M31 nova candidate,
M31N 2007-12d (ATel #1336), obtained on
2007 December 21.17 UT with the 9.2m Hobby-Eberly Telescope
(+ Marcario Low-Resolution Spectrograph) by M. Shetrone and
C. Terrazas, confirms that this object is a classical nova.
The spectrum is characterized by strong and broad Balmer
(FWHM H&alpha ~ 5500 km/s), He I, N II, III, and O I 844.6 nm
emission features. These data suggest that M31N 2007-12d
belongs to the He/N spectroscopic class of novae,
as defined by Williams (1992, AJ, 104, 725).
