SIMBAD references

K. Ayani, Bisei Astronomical Observatory (BAO); and H. Yamaoka, Kyushu University, report that low-resolution spectra (range 400-750 nm; resolution 0.5 nm at H-alpha) of 2009im (cf. CBET 1925), obtained with the BAO 1.01-m telescope on Aug. 31.8 UT, show that it is a type-Ia supernova around maximum. The absorption minimum of the Si II 635.5-nm feature is blueshifted by about 11300 km/s, assuming the recession velocity of NGC 1355 to be 3978 km/s (Maurogordato et al. 1991, A.Ap. 246, 39). The rather prominent Si II 580-nm feature implies that it is a somewhat-subluminous object.