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Spectroscopic identification of supernovae

ATel #392; Avishay Gal-Yam (Caltech)
on 16 Jan 2005; 13:36 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Avishay Gal-Yam (avishay@astro.caltech.edu)

Subjects: Optical, Supernovae

Avishay Gal-Yam reports the following spectroscopic observations of supernovae by the CCCP, all obtained with the DBSP spectrograph mounted on the 200" Hale telescope at Palomar Observatory: A spectrum of SN 2005E (Graham & Li, IAUC # 8465 ) indicates a type Ib, consistent with the identification by Foley & Filippenko (same IAUC). A spectrum of SN 2004gz (Puckett & Cox, IAUC # 8460 ) indicates it is probably of type Ia, a few weeks after maximum light. A spectrum of SN 2005B (Lane, Gray & Boles, IAUC # 8462 ) indicates it is a young type II SN, with blue continuum and lines of Halpha and Hbeta. A spectrum of the SN candidate in IC983 circulated by Li confirms it is indeed a SN of type II, with red continuum and well evolved lines of Halpha and IR Ca triplet, suggesting it is probably quite old. Finally, we wish to clarify that the observations reported in our previous telegram (ATEL #391) were of SN 2004gw, and not SN 1994gw, and thank H. Yamaoka for alerting us to our error.

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