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Type determination for SN 2005ak

ATel #427; The Nearby Supernova Factory: G. Aldering, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang (Lawrence Berkeley National Laboratory, Berkeley, CA), C. Bonnaud, E. Pecontal (Centre de Recherche Astronomique de Lyon), N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), R. Kessler (Kavli Institute for Cosmological Physics, Chicago, IL), P. Antilogus, G. Garavini, S. Gilles, R. Pain (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), C. Baltay, D. Rabinowitz, A. Bauer (Yale)
on 25 Feb 2005; 19:17 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Brian C. Lee (BCLee@LBL.gov)

Subjects: Optical, Supernovae

The Nearby Supernova Factory reports that a spectrum (range 340-1000 nm) of SN 2005ak (CBET #110), obtained Feb 25.66 UT with the SuperNova Integral Field Spectrograph on the University of Hawaii 2.2m telescope, shows it to be a type Ia SN just before maximum light. Assuming a host redshift of z =0.027 from NED and SDSS, the Si II 635.5 nm minimum absorption is at approximately 10,000 km/s.

Nearby Supernova Factory