SIMBAD references

J. M. Silverman, S. B. Cenko, A. V. Filippenko, and W. Li, University of California, Berkeley, report that inspection of CCD spectra (range 340-1000 nm), obtained on May 28 UT with the 3-m Shane reflector (+ Kast) at Lick Observatory, shows that 2009eq is probably a type-Ia supernova of the SN-1991bg subclass (Filippenko et al. 1992, A.J. 104, 1543). Cross-correlation with a library of SN spectra using the SNID indicates that it is most like SN 1999by at about three days past maximum brightness. A spectrum of the galaxy near SN 2009er (CBET 1811) reveals a recession velocity of 10200 km/s. The spectrum of 2009er is very unusual: there are no conspicuous H Balmer lines or obvious Si II lines, and it bears some resemblance to the peculiar type-Ib/c supernova 2006jc (Foley et al. 2007, Ap.J. 657, 105), but with no obvious He I lines; the exact nature of the supernova is unclear, and follow-up observations are encouraged. SN 2009es (CBET 1812) is a type-II supernova. SNID indicates that 2009es is about three weeks past maximum and most similar to the normal type-IIP supernova 2004et at 23 days past maximum; after removal of the host-galaxy recession velocity of 3900 km/s, determined from narrow emission lines, the absorption minimum of the H-alpha line is found to be blueshifted by about 7600 km/s. SN 2009et (CBET 1813) is also a type-II supernova. SNID indicates that 2009et is about one week past maximum and most similar to the normal type-IIP supernova 2004et at six days past maximum; after removal of the host-galaxy recession velocity of 8800 km/s, determined from narrow emission lines, the absorption minimum of the H-alpha line is found to be blueshifted by about 9000 km/s. SN 2009eu (CBET 1813) is a normal type-Ia supernova, although the relative strengths of Ti II and Si II lines suggest that it might be somewhat subluminous. SNID indicates that 2009eu is near maximum and most similar to the type-Ia supernova 2002eu at two days past maximum; after removal of a recession velocity of 6200 km/s, determined from narrow absorption lines, the absorption minimum of the Si II 635.5-nm line is found to be blueshifted by about 9900 km/s.