SIMBAD references

The "Nearby Supernova Factory" collaboration (N. Blanc, Y. Copin, E. Gangler, and G. Smadja, Institut de Physique Nucleaire de Lyon; G. Aldering, C. Aragon, S. Bailey, S. Bongard, M. J. Childress, D. Kocevski, S. Loken, P. Nugent, S. Perlmutter, K. Runge, R. Scalzo, R. C. Thomas, L. Wang, and B. A. Weaver, Lawrence Berkeley National Laboratory, Berkeley; P. Antilogus, S. Gilles, R. Pain, and R. Pereira, Laboratoire de Physique Nucleaire et de Haute Energies de Paris; E. Pecontal and G. Rigaudier, Centre de Recherche Astronomique de Lyon; R. Kessler, Kavli Institute for Cosmological Physics, Chicago; and C. Baltay, A. Bauer, D. Herrera, and D. Rabinowitz, Yale University) reports the discovery of a supernova (mag approximately 19.2, calibrated to R) in NEAT images (cf. CBET 263) obtained on July 19.34 UT using the Palomar Oschin Schmidt telescope (+ QUEST II camera). SN 2006dx is located at R.A. = 21h10m34s.49, Decl. = -21o34'42".7 (equinox 2000.0). A spectrogram (range 510-1000 nm), obtained with the Supernova Integral Field Spectrograph (SNIFS) on the University of Hawaii 2.2-m telescope on July 23.45, reveals that 2006dx is a type-II supernova at an approximate redshift of z = 0.035, as measured from the peak of the observed H-alpha feature (in net emission). A weak P-Cyg He I 587.6-nm feature is also detected.

SN 2006du (cf. IAUC 8733) was discovered independently in a NEAT image from July 20.48 at an approximate magnitude of 17.2 (calibrated to R). A SNIFS spectrum obtained July 23.60 reveals that 2006du is also of type II, with both H-alpha and He I 587.6-nm P-Cyg profiles; its host galaxy, IC 1529, has z = 0.023 (from the HIPASS Final Catalog 2006, via NED).