Discovery of Type Ia SNe SNF20051119-004 and SNF20051120-005; Classification of Type Ia SN 2005km
ATel #664; The Nearby Supernova Factory: G. Aldering, S. Bailey, S. Bongard, 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), N. Blanc, 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), 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 26 Nov 2005; 00:10 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: R. C. Thomas (rcthomas@lbl.gov)
Subjects: Infra-Red, Optical, Ultra-Violet, Supernovae
The Nearby Supernova Factory reports the discovery of supernova SNF20051119-004 (coordinates RA 08:34:11.15 DEC +06:16:34.9 J2000.0) in images obtained November 19.5 UT at an approximate magnitude of 19.2 (calibrated to R) using the QUEST II camera on the Palomar Oschin 48-inch telescope as a part of the JPL Near-Earth Asteroid Tracking component of the Palomar Consortium. A spectrum (range 320-1000 nm) of this target, obtained November 25.5 UT with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope, shows it to be a Type Ia supernova approximately one week past maximum at a redshift of z ~ 0.072.
SNF20051120-005 (coordinates RA 09:36:06.05 DEC +24:24:13.8 J2000.0) was discovered in images obtained November 19.5 UT at an approximate magnitude of 20.0 (calibrated to R) also using the QUEST II camera. A SNIFS spectrum of this target, obtained November 25.6 reveals that it is a Type Ia supernova approximately one month past maximum at a redshift of z ~ 0.068.
Preliminary analysis of a SNIFS spectrum of SN 2005km in UGC 6356 (CBET #303), obtained November 25.7 reveals that it is a Type Ia SN around maximum light. Subtraction of the host galaxy spectrum reveals the presence of Si II 635.5 nm and Ca II IR triplet P-Cygni profiles.
