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IAUC 7380: 2000Q; 2000P; NO NEW TRANSIENT AX J1747.1-2845

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                                                  Circular No. 7380
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)

     Y. Sato and W. D. Li, University of California at Berkeley
(UCB), on behalf of the Lick Observatory Supernova Search (cf. IAUC
6627, 7126), report the discovery with the 0.8-m Katzman Automatic
Imaging Telescope (KAIT) of a supernova (mag about 17.8) on an
unfiltered image taken on Mar. 12.5 UT.  SN 2000Q is located at
R.A. = 16h05m11s.85, Decl. = +69o39'51".5 (equinox 2000.0), which
is 4".1 east and 1".6 north of the nucleus of an anonymous galaxy
that is in turn about 218" east and 7" south of the galaxy NGC 6079.
An unfiltered image taken on Mar. 1.5 showed nothing at the
position of the new object (limiting mag about 19.0).  A. V.
Filippenko and A. L. Coil, UCB, report that uncalibrated CCD
spectra (range 330-1000 nm), obtained on Mar. 15 with the Shane 3-m
reflector at Lick Observatory, reveal that the supernova is of type
Ia, possibly subluminous, with quite prominent Si II features at
rest wavelengths of 590 and 615 nm.  The very approximate recession
velocity derived from the Si II observed wavelengths is 6000 km/s.

     E. Cappellaro, S. Benetti, M. Turatto, and A. Pastorello,
Padua, report that two spectra (range 384-684 nm, resolution 0.7
nm) of SN 2000P (cf. IAUC 7378, 7379), obtained on Mar. 11.2 and
14.3 UT with the Danish 1.54-m telescope (+ DFOSC) at the European
Southern Observatory, confirm that this object is a type-II
supernova close to maximum.  Indeed, the spectrum shows H Balmer
lines overimposed on a blue continuum.  The profiles of Balmer
lines (H-alpha, H-beta, H-gamma, H-delta, H-epsilon) show at least
two P-Cyg components:  a narrow one with absorption minima
corresponding to an expansion velocity of about 500 km/s and a
broader component with expansion velocity about 8000 km/s (FWHM),
in analogy to SNe 1996L and 1994aj (Benetti et al. 1999, MNRAS 305,
811; 1998, ibid. 294, 448).  Narrow P-Cyg components of similar
width are visible also for Fe II (multiplet 42) and Ca II H and K.

     H. Murakami et al. retract their item on IAUC 7379, saying
that AX J1747.1-2845 appears to be merely a false image of SAX
J1747.0-2853 itself, caused by improper processing with the
quick-look software.

                      (C) Copyright 2000 CBAT
2000 March 15                  (7380)            Daniel W. E. Green

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