Two Type Ia Supernovae: SNF20051020-000 and SNF20051023-000
ATel #643; The Nearby Supernova Factory: P. Antilogus, S. Gilles, R. Pain, R. Pereira (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), 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 26 Oct 2005; 21:26 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Brian C. Lee (BCLee@LBL.gov)
Subjects: Optical, Supernovae
The Nearby Supernova Factory reports the discovery of two new type Ia supernovae. Both were discovered on images taken with 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-QUEST survey. Spectra were obtained with the Supernova Integral Field Spectrograph (SNIFS) on the University of Hawaii 2.2-meter telescope (range 320-1000 nm).
SNF20051020-000 (coordinates RA=04:13:05.51, DEC=-25:04:00.5 J2000.0) was discovered in an image obtained Oct 20.5 UT. The supernova had an approximate magnitude of 19.3 (calibrated to R) at discovery. A spectrum obtained Oct 24.5 UT shows it to be a type Ia supernova at an approximate redshift of z = 0.065, about three to four weeks past maximum light.
SNF20051023-000 (coordinates RA=02:41:00.24, DEC=+16:42:38.2 J2000.0) was discovered in an image obtained Oct 23.3 UT, with an approximate magnitude of 18.9 (calibrated to R). A spectrum obtained Oct 24.4 UT shows it to be a type Ia supernova at an approximate redshift of z = 0.075, approximately one week after maximum.
The Nearby Supernova Factory