Classification of SDSS SN5944, a Type Ia Supernova
ATel #636; The Nearby Supernova Factory: N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), P. Antilogus, S. Gilles, R. Pain, R. Pereira (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), G. Aldering, S. Bailey, D. Kocevski, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang, B. A. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA), C. Bonnaud, E. Pecontal (Centre de Recherche Astronomique de Lyon), R. Kessler (Kavli Institute for Cosmological Physics, Chicago, IL), C. Baltay, D. Rabinowitz, A. Bauer (Yale)
on 19 Oct 2005; 20:16 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: R. C. Thomas (rcthomas@lbl.gov)
Subjects: Optical, Supernovae
The Nearby Supernova Factory reports that a spectrum (range 320-1000 nm) of Sloan Digital Sky Survey supernova SN5944 (SDSS SN Webpage, CBET #254), obtained October 18.5 UT with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope, reveals that it is a Type Ia supernova on the rise, spectroscopically similar to SN 1994D 5 days before maximum light. In addition to a weak Ca II IR triplet absorption around 10,000 km/s a stronger high-velocity (20,000-25,000 km/s) component is visible, reminiscent of the Type Ia SN 2001el (Wang et al. 2003 ApJ 591, 1110).
