Electronic Telegram No. 402
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
M.S. 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
CBAT@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html


SUPERNOVAE 2006ag AND 2006ah
     The "Nearby Supernova Factory" collaboration (N. Blanc, Y.
Copin, E. Gangler, and G. Smadja, Institut de Physique Nucleaire
de Lyon; P. Antilogus, S. Gilles, R. Pain, and R. Pereira,
Laboratoire de Physique Nucleaire et de Haute Energies de Paris;
G. Aldering, S. Bailey, S. Bongard, D. Kocevski, B. C. Lee, S.
Loken, P. Nugent, S. Perlmutter, R. Scalzo, R. C. Thomas, L. Wang,
and B. A. Weaver, Lawrence Berkeley National Laboratory, Berkeley;
E. Pecontal and G. Rigaudier, Centre de Recherche Astronomique de
Lyon; R. Kessler, Kavli Institute for Cosmological Physics, Chicago;
and C. Baltay, D. Rabinowitz, and A. Bauer, Yale University) reports
the discovery of two supernovae on NEAT images (cf. CBET 263)
obtained on Feb. 9.4 (SN 2006ag) and 9.6 UT (SN 2006ah).  Confirming
spectroscopy (range 320-1000 nm) was obtained with the University of
Hawaii 2.2-m telescope (+ Supernova Integral Field Spectrograph).
     SN 2006ag (mag approximately 17.9, calibrated to R) is located
at R.A. = 12h00m17s.12, Decl. = +28o36'22".0 (equinox 2000.0).
A spectrum obtained Feb. 15.5 UT reveals it to be a type-IIn supernova
at an approximate redshift of z = 0.035, measured from the peak of the
H-alpha emission.  The continuum is extremely blue, and other Balmer
lines are visible.
     SN 2006ah (mag approximately 18.6) is located at R.A. =
13h46m13s.71, Decl. = -9o07'50".6.  A spectrum taken on Feb. 15.6
indicates that this is a spectroscopically normal type-Ia supernova
at about one week past maximum light and at an approximate
redshift of z = 0.05, as measured by comparison to a library of
supernova spectra.


NOTE: These 'Central Bureau Electronic Telegrams' are sometimes
      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2006 CBAT
2006 February 16                 (CBET 402)               Daniel W. E. Green