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IAUC 7448: 2000ct; 2000cs; V1494 Aql

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                                                  Circular No. 7448
Central Bureau for Astronomical Telegrams
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7244/7440/7444 (for emergency use only)

     T. Puckett, Mountain Town, GA; A. Sehgal, Woodinville, WA; and J.
Newton, Osoyoos, BC, report their discovery of an apparent supernova
(mag 17.5) on an unfiltered CCD frame (limiting mag 20.5) taken with the
Puckett Observatory 0.60-m automated supernova patrol telescope on July
4.13 UT.  The candidate is located at R.A. = 17h01m03s.64, Decl. =
+33o28'45".0 (equinox 2000.0), which is 7".0 west and 13".4 north of the
center of the host galaxy.  The new object was also present on an
unfiltered CCD frame taken with the 0.40-m reflector at the Newton
Observatory B & B on July 6.55 UT.  It does not appear on Palomar Sky
Survey images taken on 1993 Apr. 4, 1989 June 29 and 1954 May 27 (limiting
mag about 21.0, 21.0 and 20.0, respectively.

SUPERNOVA 2000cs IN MCG +07-34-15
     S. Jha, P. Challis and R. Kirshner, Harvard-Smithsonian Center for
Astrophysics, report that spectra of SN 2000cs, taken with the
F. L. Whipple Observatory 1.5-m telescope (+ FAST spectrograph) by M. Calkins
on July 2.23, 3.26 and 4.30 UT, and by A. Mahdavi on July 5.28, show
it to be an unusual type II supernova near maximum light.  The spectra
exhibit a slightly red continuum with a broad P-Cyg H-alpha profile.
The H-alpha emission FWHM is 11 800 km/s, and the expansion velocity
measured to the H-alpha trough is 20 000 km/s, adopting the NASA/IPAC
Extragalactic Database recession velocity of 10 596 km/s for the host
galaxy.  Other well-developed Balmer and He lines are present, with
expansion velocities 11 400 km/s (He I, rest 587.6 nm), 9600 km/s
(H-beta) and 8900 km/s (H-gamma).  See
     A. V. Filippenko, R. Chornock and M. Modjaz, University of California
at Berkeley, report that an uncalibrated spectrum with the Lick
Observatory's Shane 3-m reflector on July 6 suggests that this is a
somewhat peculiar type II supernova, dominated by a strong, broad, H-alpha
emission line, with weaker Na D (or He I) absorption and some other features.

     R. Novak, Copernicus Observatory; A. Retter, Keele University;
L. Cook, Concord, CA; and D. Korcakova and J. Janik, Masaryk University,
write: "CCD photometry of V1494 Aql (Nova Aql 1999 No. 2) through an R
filter on June 7, 8, 9, 10, 15 and 16 reveals a sinusoidal variation with
period 0.0627 +/- 0.0001 day and full amplitude 0.03 mag."

                      (C) Copyright 2000 CBAT
2000 July 6                    (7448)              Brian G. Marsden

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