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Type determination for SN 2006at

ATel #771; A. Gal-Yam (Caltech), A. Cucchiara (Penn State) and P. Capak (Caltech)
on 24 Mar 2006; 06:46 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Avishay Gal-Yam (avishay@astro.caltech.edu)

Subjects: Optical, Supernovae

Referred to by ATel #: 776

A. Gal-Yam, A. Cucchiara and P. Capak report for the CCCP: We have observed SN 2006at (Dintinjana and Mikuz; IAUC # 8687) with the DBSP spectrograph mounted on the Hale 200" telescope at Palomar Observatory on 2006 March 17 UT, under generally poor conditions. Reduction of the spectrum shows Balmer lines superposed on a blue continuum, indicating this is a type II SN, confirming the suggestion of Brown and Immler (Atel #761) based on early Swift photometry. The Halpha profile is strongly dominated by emission, though, an atypical profile for the II-P subtype. The redshift of this event appears to be low (z<0.01) based on the the Balmer lines, but a spectrum of the host galaxy will be required to get an accurate redshift for this event.

CCCP webpage