M31N 2008-10b
Optical spectra reported by
Barsukova et al. 2008, ATel, 1871
Fig 1:
SAO observatory spectrum of M31N 2008-10b in rebrightening.
Further spectra in
Di Mille et al. 2010, AN, 331, 197
and in
Shafter et al. 2011, ApJ in press
.