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Classification of SN 2010hb, an early Type II supernova

ATEL # 2826; The Nearby Supernova Factory: G. Aldering, M. Childress, H. Fakhouri, E. Hsiao, S. Loken, P. Nugent, S. Perlmutter, K. Runge, R. C. Thomas (Lawrence Berkeley National Laboratory); P. Antilogus, S. Bailey, S. Bongard, A. Canto, R. Pain (Laboratoire de Physique Nucleaire et de Haute Energies de Paris); C. Buton, N. Chotard, Y. Copin, E. Gangler, R. Pereira, G. Smadja, C. Tao (Institut de Physique Nucleaire de Lyon); E. Pecontal (Centre de Recherche Astronomique de Lyon); C. Baltay, D. Rabinowitz, R. Scalzo (Yale University); M. Kerschhaggl, M. Kowalski, K. Paech (University of Bonn) and D. Birchall (University of Hawaii)
on 2 Sep 2010; 21:09 UT
Distributed as an Instant Email Notice (Supernova)
Password Certification: R. C. Thomas (rcthomas@lbl.gov)

Subjects: Optical, Nova, Supernova, Transients

The Nearby Supernova Factory reports the classification of supernova SN 2010hb (CBET 2424). A spectrum (range 320-1000 nm) obtained Aug 27.5 UTC with the SuperNova Integral Field Spectrograph (SNIFS) on the University of Hawaii 2.2-meter telescope reveals SN 2010hb to be a young Type II SN, estimated at 1-2 weeks after explosion. Broad H-alpha, H-beta and He I 5876 emission (not yet developed into clear P-Cygni profiles) is seen at wavelengths consistent with the 4997 km/s redshift (RC3) of the host galaxy, UGC 02537. There is strong Galactic extinction, A_V = 0.766 (Schlegel, Finkbeiner and Davis, 1998, ApJ 500, 525), along this sightline.


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