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A Supernova Discovery

ATEL # 1172; The Nearby Supernova Factory: G. Aldering, C. Aragon, S. Bailey, S. Bongard, M. Childress, S. Loken, P. Nugent, S. Perlmutter, K. Runge, R. C. Thomas, B. A. Weaver (Lawrence Berkeley National Laboratory, Berkeley, CA); C. Baltay, A. Bauer, D. Rabinowitz, R. Scalzo (Yale University, New Haven, CT); G. Rigaudier, E. Pecontal (Centre de Recherche Astronomique de Lyon), C. Buton, Y. Copin, E. Gangler, G. Smadja, C. Tao (Institut de Physique Nucleaire de Lyon); P. Antilogus, R. Pain, R. Pereira, C. Wu (Laboratoire de Physique Nucleaire et de Haute Energies de Paris); and D. Birchall (Institute for Astronomy, University of Hawaii, Hilo, HI); and J. Holtzman (New Mexico State University, Las Cruces, NM)
on 8 Aug 2007; 20:15 UT
Distributed as an Instant Email Notice (Supernova)
Password Certification: R. C. Thomas (

Subjects: Infra-Red, Optical, Ultra-Violet, Nova, Supernova

The Nearby Supernova Factory reports the discovery of supernova SNF20070731-005 in images obtained Jul 31.5 UTC using the QUEST-II camera on the Palomar Oschin 48-inch telescope, operated by the Palomar-QUEST consortium. An R-band discovery magnitude of 18.3 and J2000.0 coordinates RA 03:16:31.37 DEC 15:27:40.7 are derived from comparison with the USNO-B1.0 catalog. A spectrum (range 320-1000 nm) obtained Aug 08.6 UTC with the SuperNova Integral Field Spectrograph on the University of Hawaii 2.2-meter telescope was used for classification. The supernova is of Type Ia three weeks after maximum, at an approximate redshift of z = 0.036.

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R. E. Rutledge , Editor
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