Electronic Telegram No. 714
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)
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SUPERNOVA 2006lt
     A. Soderberg, California Institute of Technology, on behalf of the
"Nearby Supernova Factory" collaboration (E. Pecontal and G. Rigaudier,
Centre de Recherche Astronomique de Lyon; P. Antilogus, S. Gilles, R. Pain,
and R. Pereira, Laboratoire de Physique Nucleaire et de Haute Energies de
Paris; C. Buton, Y. Copin, E. Gangler, and G. Smadja, Institut de Physique
Nucleaire de Lyon; G. Aldering, C. Aragon, S. Bailey, S. Bongard, M. J.
Childress, S. Loken, P. Nugent, S. Perlmutter, K. Runge, R. Scalzo, R. C.
Thomas, and B. A. Weaver, Lawrence Berkeley National Laboratory, Berkeley;
R. Kessler, Kavli Institute for Cosmological Physics, Chicago; and C.
Baltay, A. Bauer, D. Herrera, and D. Rabinowitz, Yale University; along
with G. Djorgovski and A. Mahabal, California Institute of Technology),
reports the discovery of a supernova (magnitude approximately 19.1,
calibrated to R) on a NEAT image (cf. CBET 263) obtained on Oct. 11.4 UT
using the QUEST II camera on the Palomar Oschin 1.2-m Schmidt telescope as
a part of the Palomar-QUEST Consortium.  SN 2006lt is located at R.A. =
2h16m59s.89, Decl. = +30d41'57".4 (equinox 2000.0), which is about 12" from
a low-surface-brightness galaxy.  A spectrum (range 320-1000 nm) of 2006lt
was obtained on Oct. 13.6 with the Supernova Integral Field Spectrograph on
the University of Hawaii 2.2-m telescope.  An inspection of this spectrum
by Djorgovski and Mahabal suggests that it is a late type-Ib supernova,
similar to that of SN 1985F (Filippenko and Sargent 1986, A.J. 91, 691):
the spectrum of 2006lt exhibits strong forbidden emission features
similar to those in the late-time spectrum of 1985F, including [O I]
630.0-, 636.4-nm, [Ca II] 729.2-, 732.4-nm, O I 777.0-nm, and a blend of
other emission features around 870 nm.  A redshift of z approximately 0.015
is measured from the [O I] emission feature.


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2006 CBAT
2006 November 2                  (CBET 714)               Daniel W. E. Green