2003IAUC.8059....2M

Further to IAUC 8058, T. Matheson et al. add that a spectrum of SN 2003M, obtained by M. Calkins on Jan. 26.38 UT, shows it to be an unusual type-Ia supernova (not type Ic, as suggested on IAUC 8057): "As UGC 7224 is an elliptical galaxy, this would be an extraordinary event if it were a core-collapse supernova. The spectrum is like that of SN 2002jm (cf. IAUC 8031), reported by Foley et al. as similar to SN 1991bg at 3 weeks past maximum, but without the Na I D absorption seen in SN 1991bg."