2009CBET.1658....2S

Stritzinger adds that he also obtained spectra (as above) on Jan. 5.1-5.2 of 2009A (cf. CBETs 1645 and 1651) and 2009F (cf. CBET 1650). SN 2009A is a type-IIp supernova around two weeks past explosion; comparison with a library of spectra, via the "Supernova Identification" program (Blondin and Tonry 2007, Ap.J. 666, 1024), indicates that 2009A is similar to spectra of SN 2004et around 14 days past explosion. SN 2009F appears to be a young type-Ia supernova around a week before maximum light; adopting a host-galaxy recession velocity of 3884 km/s (Huchra et al. 1993, A.J. 105, 1637) for the host galaxy (NGC 1725), Si II is measured to be blue-shifted by roughly 12000 km/s.

Editor's note: this item was to have been published on Jan. 5 as CBET 1654, but a computer glitch prevented its release until now (and another item was issued on CBET 1654); therefore, the reference to CBET 1654 on CBET 1657 was intended to refer to the report above.