Classification of SN2005db, a Type IIn Supernova
ATel #570; The Nearby Supernova Factory: N. Blanc, S. Bongard, Y. Copin, E. Gangler, L. Sauge, G. Smadja (Institut de Physique Nucleaire de Lyon), 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), R. Kessler (Kavli Institute for Cosmological Physics, Chicago, IL), C. Baltay, D. Rabinowitz, A. Bauer (Yale)
on 20 Jul 2005; 22:30 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Peter Nugent (penugent@lbl.gov)
Subjects: Optical, Supernovae
The Nearby Supernova Factory reports that a spectrum (range 320-1000 nm) of SN 2005db (CBET # 182), obtained July 20.6 UT with the Supernova Integral Field Spectrograph on the University of Hawaii 2.2-m telescope, shows it to be a Type IIn supernova. Adopting the NED recession velocity of 4534 km/s for the host galaxy, the spectrum is blue and featureless save for narrow emission lines of H-alpha and H-beta of approximately 400 km/s (FWHM). The narrow H-alpha emission line sits on top of a broader component that is approximately 1600 km/s (FWHM).
