Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 7347: 2000B; PSR 0833-45; 1999gh, 1999gk, 1999gm, 1999gn, 1999gq

The following International Astronomical Union Circular may be linked-to from your own Web pages, but must not otherwise be redistributed (see these notes on the conditions under which circulars are made available on our WWW site).

Read IAUC 7346 SEARCH Read IAUC 7348

View IAUC 7347 in .dvi or .ps format.
IAUC number 

                                                  Circular No. 7347
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Mailstop 18, Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
BMARSDEN@CFA.HARVARD.EDU or DGREEN@CFA.HARVARD.EDU (science)
URL http://cfa-www.harvard.edu/iau/cbat.html  ISSN 0081-0304
Phone 617-495-7244/7440/7444 (for emergency use only)


SUPERNOVA 2000B IN NGC 2320
     P. Antonini, Avignon, France; and F. Colas and E. Frappa, Pic
du Midi Observatory, report the discovery of an apparent supernova
(mag 16.5) on CCD images taken with the Bedouin Observatory 0.305-m
telescope by Antonini on Jan. 11.0 UT.  SN 2000B is located at R.A.
= 7h05m40s.73, Decl. = +50o35'10".5 (equinox), which is 14" west and
19" north of the nucleus of NGC 2320.  SN 2000B was confirmed (mag
16.0) via CCD observation on Jan. 13.85 with the 1.05-m telescope
at Pic du Midi.  The new star does not appear on the Digital Sky
Survey (limiting mag about 21) or the Buil-Thouvenot Atlas.
Additional photometry of SN 2000B by Colas and Frappa:  Jan. 14.03,
R = 16.35; 14.80, B = 16.59 +/- 0.04; 14.84, V = 16.49 +/- 0.02;
14.89, R = 16.26 +/- 0.02; 14.94, I = 16.41 +/- 0.04; 16.84, V =
16.19; 16.92, R = 16.01; 16.97, I = 16.27; 17.01, R = 16.36.  W. Li,
University of California, reports that a prediscovery KAIT CCD
image taken on Jan. 8.3  shows the new object at mag about 17.5.


PSR 0833-45
     R. G. Dodson, P. M. McCulloch, and M. E. Costa, University of
Tasmania, write:  "We observed a sharp glitch on Jan. 16.319 UT in
the Vela pulsar. Preliminary model fitting gives a fractional
decrease of 3.14 x 10**-6 in the period, making this the largest
decrease on record.  The jump was observed at three frequencies
(635.034, 990.25, and 1390.64 MHz) with the Mount Pleasant 14-m
dish, and further observations were made with the 26-m dish.
Details (including temporary parameter files over the glitch and
for pre- and post-glitch) can be found at
http://kerr.phys.utas.edu.au/~rdodson/Glitch."


SUPERNOVAE 1999gh, 1999gk, 1999gm, 1999gn, 1999gq
     Unfiltered CCD magnitude estimates by L. Kiss, K. Sarneczky,
and K. Sziladi, at the Piszkesteto station of Konkoly Observatory:
SN 1999gh in NGC 2986, Jan. 1.020 UT, 16.7 +/- 0.3;
SN 1999gk in NGC 4653, Jan. 1.181, 16.5 +/- 0.2;
SN 1999gm in PGC 24106, Jan. 1.039, 18.5 +/- 0.3;
SN 1999gn in M61, Jan. 1.171, 16.0 +/- 0.1;
SN 1999gq in NGC 4523, Jan. 1.177, 14.5 +/- 0.1.

                      (C) Copyright 2000 CBAT
2000 January 17                (7347)            Daniel W. E. Green

Read IAUC 7346 SEARCH Read IAUC 7348

View IAUC 7347 in .dvi or .ps format.

Our Web policy. Index to the CBAT/MPC/ICQ pages.

Valid HTML 4.01!