Central Bureau for Astronomical Telegrams

Central Bureau for Astronomical Telegrams -- Image credits

IAUC 6139: N Cen 1995; 1995G; 7P

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 6138  SEARCH Read IAUC 6140

View IAUC 6139 in .dvi or .ps format.
IAUC number


                                                  Circular No. 6139
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
IAUSUBS@CFA.HARVARD.EDU or FAX 617-495-7231 (subscriptions)
Phone 617-495-7244/7440/7444     TWX 710-320-6842 ASTROGRAM CAM
MARSDEN@CFA.HARVARD.EDU or GREEN@CFA.HARVARD.EDU (science)


NOVA CENTAURI 1995
     W. Liller, Instituto Isaac Newton, Vina del Mar, reports
his discovery of a probable nova with PROBLICOM on Feb. 23 and
his CCD confirmation on Feb. 24, the latter yielding the position
R.A. = 13h02m32s.07, Decl. = -60d11'39".8 (equinox 2000.0; blend with
GSC 8909.2001 at end figures 33s.52, 53".7, mag 12.4).  Magnitudes and
colors: Jan. 27, [12 (Liller); Feb. 23.31 UT, 7.2 (Liller; Kodak TP
film + orange filter); 24.04, V = 7.59 (Liller; CCD, comparison
HD 113012, assumed V = 8.13, B-V = +0.11); 24.15, V = 7.70 (Liller);
25.03, mv = 8.0 (D. Overbeek, Edenvale, South Africa); 25.41, V = 8.14,
U-B = -0.68, B-V = +0.31, V-R = +1.01, V-I = +1.17 (A. C. Gilmore,
Mt. John Observatory; comparisons Cousins F218 and F205, airmass 1.53).

     J. B. Hearnshaw and L. C. Watson, Mt. John University Observatory,
obtained several blue and red CCD spectra with the medium-resolution
spectrograph on the 1-m telescope around Feb. 25.43 UT.  These showed
strong Balmer emission lines with P-Cyg profiles.  The FWHM of the
H-gamma and H-delta lines was 5.5 nm.


SUPERNOVA 1995G IN NGC 1643
     A. V. Filippenko, University of California at Berkeley, reports
that D. Schlegel obtained CCD spectra (range 335-730 nm, resolution
0.7 nm) on Feb. 25 with the 3-m Shane reflector at the Lick
Observatory.  Inspection of the uncalibrated data reveals that SN
1995G is a peculiar type II supernova bearing a close resemblance to
SN 1994W shortly after discovery (cf. IAUC 6046, 6057).  Strong,
relatively narrow (FWHM 1200 km/s), hydrogen Balmer emission lines
are superposed on broader bases (FWZI 7000 km/s).  Narrow, weaker
Fe II emission lines are also present.  The Balmer lines exhibit
narrow (FWHM 300 km/s) P-Cyg absorption components with minima
displaced by about 700 km/s from the emission-line cores.  Similar
features are seen in the Fe II multiplets; they are probably produced
by a dense circumstellar shell.


COMET 7P/PONS-WINNECKE
     CCD magnitude estimates: 1994 Dec. 31.46 UT, R =  20.1 (S. M.
Larson and C. W. Hergenrother, Catalina, 1.5-m reflector); 31.49,
V = 20.9 (J. V. Scotti, Kitt Peak, 0.9-m Spacewatch telescope;
stellar appearance); 1995 Jan. 7.49, V = 20.6 (Scotti); 28.30, R = 20.7
(Larson and Hergenrother, Kitt Peak, 2.3-m reflector).


1995 February 25               (6139)              Brian G. Marsden

Read IAUC 6138  SEARCH Read IAUC 6140

View IAUC 6139 in .dvi or .ps format.


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


Valid HTML 4.01!