Electronic Telegram No. 1732
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://www.cfa.harvard.edu/iau/cbat.html


SUPERNOVAE 2009bc-2009bl AND A CATACLYSMIC VARIABLE IN URSA MAJOR
     M. M. Kasliwal and R. Quimby, California Institute of Technology --
together with P. Nugent, R. S. Ellis, A. Howell, S. R. Kulkarni, N. Law, E.
O. Ofek, D. Poznanski, and R. Thomas -- and on behalf of the larger "Palomar
Transient Factory" collaboration (cf. CBET 1724), report the discovery of
ten supernovae and one Milky-Way cataclysmic variable on R-band CCD images
taken on Mar. 17 UT (in a search of 498 square degrees, with reference
imaging obtained prior to Mar. 12).  Spectroscopy was obtained on Mar. 20
with the Palomar 5-m Hale telescope (+ Double Beam Spectrograph), and the
phases of the supernovae with respect to maximum light were identified by
the "Superfit" routine of Howell et al. (2005, Ap.J. 634, 1190), yielding the
following supernova types and the phases in days:  2009bc, Ia, -2 days;
2009bd, Ia, -4; 2009be, Ia, -8; 2009bf, Ia, 0:; 2009bg, Ia, 0:; 2009bh, Ic,
--; 2009bi, Ia, -7:; 2009bj, II, --; 2009bk, II, --; 2009bl, II, --.  Also
tabulated below is the redshift (z) of each supernova.

SN       2009 UT         R.A. (2000.0) Decl.      Mag.     Offset           z
2009bc   Mar. 17.14    8 00 47.282 +46 56 53.80   20.2   0".4 E, 0".4 S   0.121
2009bd   Mar. 17.15    9 14 34.163 +51 10 29.69   20.0   0".1 E, 0".8 S   0.149
2009be   Mar. 17.18   11 41 54.054 +10 25 46.06   20.1   0".5 E, 2".6 S   0.153
2009bf   Mar. 17.18   12 06 51.666 +26 57 36.65   17.8   0".2 W, 0".0 N   0.046
2009bg   Mar. 17.21   13 27 10.500 +31 30 32.50   19.2   0".7 W, 0".5 N   0.119
2009bh   Mar. 17.22   12 24 50.165 + 8 25 57.58   19.6   1".8 E, 3".9 S   0.090
2009bi   Mar. 17.26   14 29 39.610 +39 09 32.80   20.0   0".0 W, 2".0 N   0.126
2009bj   Mar. 17.26   14 18 58.682 +35 23 16.11   19.2   0".7 E, 0".8 N   0.027
2009bk   Mar. 17.27   14 15 43.290 +16 11 59.14   18.6   4".6 E, 1".4 S   0.039
2009bl   Mar. 17.27   15 16 31.497 +54 27 35.44   18.4   0".5 E, 4".5 N   0.040

     The cataclysmic variable was at mag R = 19.5 on Mar. 17.1476 UT, and
located at R.A. = 9h15m36s.571, Decl. = +50o34'51".48 (equinox 2000.0).


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      superseded by text appearing later in the printed IAU Circulars.

                         (C) Copyright 2009 CBAT
2009 March 23                    (CBET 1732)              Daniel W. E. Green