Discovery of SNF20060208-004 (Type II), Classification of SN 2006aa (Type IIn) and SN 2006ac (Premaximum Type Ia)
ATel #732; The Nearby Supernova Factory: N. Blanc, Y. Copin, E. Gangler, 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, 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), E. Pecontal, G. Rigaudier (Centre de Recherche Astronomique de Lyon), R. Kessler (Kavli Institute for Cosmological Physics, Chicago, IL), C. Baltay, D. Rabinowitz, A. Bauer (Yale)
on 11 Feb 2006; 00:46 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 SNF20060208-004 (RA 09:07:43.11 Dec. +12:03:06.5 J2000.0) in images obtained February 8.3 UT with an approximate magnitude of 18.9 (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 object obtained February 10.5 UT with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope, shows it to be a Type II supernova at an approximate redshift of z = 0.03, as measured from the peak of its H-alpha emission.
The Nearby Supernova Factory also reports classifications for supernovae 2006aa and 2006ac (both IAUC # 8669 ) using SNIFS spectra taken February 10.5 and 10.6 UT respectively. SN 2006aa is a Type IIn supernova at an approximate redshift measured from its H-alpha emission peak of z = 0.02, consistent with that of its host (NGC 3947 at z = 0.020671, de Vaucouleurs et al. 1991, RC3.9 via NED). SN 2006ac is a young Type Ia supernova, similar to SN 1994D about nine days before maximum, at a redshift consistent with that of its host (NGC 4619 at z = 0.023106, de Vaucouleurs et al. 1991 via NED).
