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Discovery of SNF20050519-000, a Type Ia Supernova

ATel #499; The Nearby Supernova Factory: P. Antilogus, G. Garavini, S. Gilles, R. Pain (Laboratoire de Physique Nucleaire et de Haute Energies de Paris), G. Aldering, S. Bailey, B. C. Lee, S. Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang, B. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA), C. Bonnaud, E. Pecontal (Centre de Recherche Astronomique de Lyon), N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), R. Kessler (Kavli Institute for Cosmological Physics, Chicago, IL), C. Baltay, D. Rabinowitz, A. Bauer (Yale)
on 24 May 2005; 16:36 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: R. C. Thomas (rcthomas@lbl.gov)

Subjects: Supernovae

The Nearby Supernova Factory reports the discovery of SNF20050519-000 (coordinates RA 21:35:52.5 DEC -26:27:03.5 J2000.0) in an image obtained May 19.5 UT 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 Consortium. A spectrum (range 320-1000 nm) of this object, obtained May 24.6 with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope, shows it to be a Type Ia SN approximately three weeks past maximum brightness. Its spectrum, dominated by iron-peak features blueward of 500 nm, closely resembles that of SN 1994D at the same phase. The redshift derived from this comparison is consistent with that of the host galaxy (2MASX J21355254-2627050, z=0.0304) as given by NED.