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IAUC 6141: N Cen 1995; X-RAY N 1993 IN Oph; 1995A, 1995B

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                                                  Circular No. 6141
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
     S. Benetti, European Southern Observatory (ESO); M. Della
Valle, Dipartimento di Astronomia dell'Universita di Padova; and S.
Molendi, Istituto di Fisica Cosmica del CNR, Milan, report
that inspection of a fully-reduced CCD spectrogram (range 500-900
nm, resolution 0.4 nm) obtained on Feb. 27.2 UT with the ESO 1.5-m
telescope (+ Boller & Chivens spectrograph) confirms this object to
be a galactic nova caught during its early decline.  The spectrum
is dominated by strong emission lines of H-alpha, O I (multiplets 1,
4, 34), and Ca II (infrared triplet).  H-alpha and O I (844.6 nm)
have a FWZI of about 6000 km/s and double-peaked profiles (peak-to-
peak separations of about 2000 km/s), with the redder component
always stronger.  Weaker emissions due to Fe II (multiplets 42, 46,
48, 49), Na I D, and He I (587.6 nm) are also detected.
     Photometry by A. C. Gilmore, Mt. John University Observatory:
Feb. 26.388 UT, V = 8.49, U-B = -0.67, B-V = +0.30, V-R = +1.24,
V-I = +1.35 (airmass 1.67; comparison stars Cousins F218 and F205).


X-RAY NOVA 1993 IN OPHIUCHUS
     K. Borozdin, N. Alexandrovich, and R. Sunyaev, Space Research
Institute, Moscow, on behalf of the MIR-Kvant team, report:  "This
object (GRS 1716-249 = GRO J1719-24) continues to be bright
according to observations made on Feb. 16 with the TTM instrument
onboard MIR-Kvant.  The flux from the source in the energy band 2-27
keV was equal to 275 +/- 20 mCrab, which is the highest value
detected by the TTM from this source since the main outburst in
Sept. 1993 (IAUC 5878).  The spectrum can be approximated by a
power law with index 2.1 +/- 0.3."


SUPERNOVAE 1995A, 1995B
     A. V. Filippenko and A. J. Barth, University of California at
Berkeley, report that inspection of CCD spectra (range 420-700 nm,
resolution 0.7 nm) obtained on Feb. 24 with the 3-m Shane reflector
at the Lick Observatory reveals that SN 1995A (cf. IAUC 6131) is
of type Ia, about 2 months past maximum.  The recession velocity,
determined from strong emission lines in the parent galaxy, is
9400 km/s.  Similar observations show that SN 1995B (cf. IAUC 6132)
is of type II, with a recession velocity of 9900 km/s.  The spectrum
suggests that SN 1995B is still in its photospheric phase.


1995 February 27               (6141)            Daniel W. E. Green

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