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Type determination for SN 2005Z and SN 2005aa

ATel #406; Avishay Gal-Yam (Caltech)
on 6 Feb 2005; 20:22 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Avishay Gal-Yam (avishay@astro.caltech.edu)

Subjects: Optical, Supernovae

Avishay Gal-Yam reports for the CCCP: A. Soderberg and D. Fox have obtained spectra of the unidentified supernovae SN 2005Z and SN 2005aa, using the double spectrograph mounted on the Palomar Observatory 200" Hale telescope, on Feb. 6, 2005, UT. Preliminary analysis reveals that SN 2005Z (Khandrika, Park, Graham, and Li, IAUC # 8476 ) is of type II. Broad lines of Halpha and Hbeta display a P-Cygni profile. SN 2005aa (Khandrika, Park, Graham, and Li, IAUC # 8476 ) is also of type II, with broad lines of Halpha and Hbeta, mostly in emission, superposed on a blue continuum.

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