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Spectroscopic Observation of the Bright PSN in NGC2857 by the Nearby Supernova Factory II

ATel #4466; F. Cellier-Holzem, A. Canto, P. Antilogus, S. Bongard, R. Pain (LPNHE); Y. Copin, E. Gangler, R. Pereira, M. Rigault, G. Smadja (IPNL); G. Aldering, D. Birchall, M. Childress, H. Fakhouri, A. Kim, J. Nordin, P. Nugent, S. Perlmutter, K. Runge, C. Saunders, N. Suzuki, R. C. Thomas (LBNL); E. Pecontal (CRAL); C. Buton, U. Feindt, M. Kerschhaggl, M. Kowalski (U. Bonn); S. Benitez, W. Hillebrandt, M. Kromer, M. Sasdelli, A. Sternberg, S. Taubenberger (MPA); D. Baugh, J. Chen, N. Chotard, C. Wu (THCA) C. Tao (CPPM & THCA), D. Fouchez, A. Tilquin (CPPM); E. Hadjiyska, D. Rabinowitz, C. Baltay, N. Ellman, R. McKinnon, A. Effron (Yale)
on 9 Oct 2012; 13:24 UT
Credential Certification: Alex Kim (agkim@lbl.gov)

Subjects: Optical, Transient

Referred to by ATel #: 4489, 4496, 4520

The Nearby Supernova Factory II (http://snfactory.lbl.gov) reports the spectroscopic observation of a bright PSN in NGC2857, MASTER OT J092437.95 +49212.0 (RA, Dec) = (09h 24m 37.95s, +49d 21m 32s.0)(http://www.astronomerstelegram.org/?read=4459). The implied absolute magnitude based on the discovery photometry is -19.8 given the distance of NGC2857. The spectrum covers the range 320-1000 nm and is obtained with the SuperNova Integral Field Spectrograph (Aldering et al 2002, SPIE, 4836, 61) on the University of Hawaii 2.2-meter telescope. The spectrum is blue and featureless, with a weak (2 sigma) H-alpha detection corresponding to the NGC 2857 redshift of z=0.016301 (Third Reference Catalogue of Bright Galaxies, Version 3.9; de Vaucouleurs et al. 1991).