Discovery of Type IIn Supernova SNF20051117-001 and classification of Type Ia SN2005ki
ATel #659; The Nearby Supernova Factory: C. Bonnaud, E. Pecontal (Centre de Recherche Astronomique de Lyon), 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), 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), R. Kessler (Kavli Institute for Cosmological Physics, Chicago, IL), C. Baltay, D. Rabinowitz, A. Bauer (Yale)
on 20 Nov 2005; 20:01 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 SNF20051117-001 (coordinates RA 08:40:09.18 DEC -05:36:02.2 J2000.0) in images obtained November 17.5 UT with an approximate magnitude of 16.3 (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 November 20.6 UT with the Supernova Integral Field Spectrograph (SNIFS) on the University of Hawaii 2.2-meter telescope, shows it to be a Type IIn supernova at a redshift of z = 0.016, exhibiting H-alpha (FWHM 1300 km/s), H-beta, H-gamma and He I 587.6 in emission. The observed redshift is consistent with that of the host, 2MASX J08400884-0536039 (z = 0.01698; Jones et al. 2005, The 6DF Galaxy Survey Data Release 2).
The Nearby Supernova Factory also reports that a spectrum of supernova 2005ki (CBET #294), obtained November 20.6 UT with SNIFS, shows it to be a young, blue Type Ia supernova. The spectrum is similar to that of SN 1994D at an age of -9 days with respect to maximum, at a redshift consistent with that of the host NGC 3332 (z = 0.019607; Falco et al. 1999, PASP 111, 438).
