Photometric typing of SN 2005ke
ATel #655; Avishay Gal-Yam (Caltech)
on 15 Nov 2005; 17:49 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Avishay Gal-Yam (avishay@astro.caltech.edu)
Subjects: Optical, Supernovae
Referred to by ATel #: 923
Applying the methods described by Gal-Yam et al. (2004, PASP, 116, 597; see also Poznanski et al. 2002, PASP, 114, 833) to the Swift/UVOT photometry of SN 2005ke reported by Immler & Brown (CBET #289) we determine the following constraints on the type of this young, nearby SN: 1) The UBV photometry of SN 2005ke is well fit by colors of young SNe of type Ib or Ic. 2) The SN is inconsistent with being a young type Ia event, unless it is significantly extinguished by dust (A_V>1 mag). 3) The colors of this young SN are inconsistent with those of typical young type II SNe regardless of the amount of extinction. These calculations are based on the assumptions that the reported UVOT magnitudes are on the Johnson UBV system (Li et al. 2005, astro-ph/0505504), and that the photometry is accurate to about 0.1 magnitudes (Immler & Brown, CBET #289). A photometric typing plot of this SN can be viewed on http://www.astro.caltech.edu/~avishay/sn2005ke-typing.eps .
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