2007CBET.1031....1A -
Central Bureau Electronic Telegrams, 1031, 1 (2007/August-0)
Supernova 2007gp.
ANTILOGUS P., PAIN R., PEREIRA R., WU C., ALDERING G., ARAGON C., BAILEY S., BONGARD S., CHILDRESS M., LOKEN S., NUGENT P., PERLMUTTER S., RUNGE K., THOMAS R.C., WEAVER B.A., BALTAY C., BAUER A., RABINOWITZ D., SCALZO R., RIGAUDIER G., PECONTAL E., BUTON C., COPIN Y., GANGLER E., SMADJA G., TAO C., BIRCHALL D. and HOLTZMAN J.
Abstract (from CDS):
Further to CBET 1026, the "Nearby Supernova Factory" collaboration (P. Antilogus, R. Pain, R. Pereira, and C. Wu, Laboratoire de Physique Nucleaire et de Haute Energies de Paris; G. Aldering, C. Aragon, S. Bailey, S. Bongard, M. Childress, S. Loken, P. Nugent, S. Perlmutter, K. Runge, R. C. Thomas, and B. A. Weaver, Lawrence Berkeley National Laboratory; C. Baltay, A. Bauer, D. Rabinowitz, and R. Scalzo, Yale University; G. Rigaudier and E. Pecontal, Centre de Recherche Astronomique de Lyon; C. Buton, Y. Copin, E. Gangler, G. Smadja, and C. Tao, Institut de Physique Nucleaire de Lyon; D. Birchall, Institute for Astronomy, University of Hawaii, Hilo; and J. Holtzman, New Mexico State University, Las Cruces) reports the discovery of a supernova (at R approximately 20.5) in images obtained on Aug. 7.2 UT using the QUEST-II camera on the Palomar Oschin 1.2-m Schmidt telescope, operated by the Palomar-QUEST consortium. SN 2007gp is located at R.A. = 21h57m35s.59, Decl. = +8o00'47".3 (equinox 2000.0). A noisy spectrogram (range 320-1000 nm), obtained on Aug. 8.5 with the SuperNova Integral Field Spectrograph on the University of Hawaii 2.2-m telescope, suggests – from a spectral fit using a library of other supernova spectra – that 2007gp is a type-Ia supernova at a redshift of z approximately 0.24 and that the supernova may be approaching or around maximum brightness.
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