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IAUC 4028: N Vul 1984 No. 2; SN (?) IN NGC 1023; N Vul 1984 No. 1

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                                                  Circular No. 4028
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
TWX 710-320-6842 ASTROGRAM CAM    Telephone 617-495-7244/7440/7444


NOVA VULPECULAE 1984 No. 2
     R. Lyons and C. T. Bolton, David Dunlop Observatory, communicate:
"A spectrogram (dispersion 0.8 nm/mm) obtained of this object
on Dec. 30.96 UT shows a spectrum typical of a nova shortly after
maximum light.  The Balmer and Ca II lines are present in emission,
and a complex blend of Fe II and Ti II (?) emission is seen between
448 and 460 nm with weaker emission elsewhere in the spectrum.  The
measured absorption line velocities are -630 km/s for Fe II and Ti
II, -670 km/s for H, and -720 km/s for Ca II.  The latter two sets
of lines also had absorption components at -1390 km/s.  The absorption
lines are relatively narrow, and there are very strong interstellar
Ca II lines at -7 km/s.  A 1.2-nm/mm spectrogram obtained
on Jan. 8.97 shows only a slight weakening of the lower velocity
absorption components, but Fe II and Ti II lines have shifted to
-650 km/s, and the Balmer and Ca II lines are at -750 km/s."

     E. A. Harlan and G. H. Herbig, Lick Observatory, write that a
75-A/mm spectrogram of the blue-violet region obtained on 1984 Dec.
28.1 UT shows a prominent pre-maximum absorption spectrum of type
F2, luminosity class I, together with moderately strong emission
bands of H and Fe II.  The F2 spectrum and the absorption fringes
on the emission lines have a displacement of ~ 650 km/s.  Another
set of absorption components at -1300 km/s is present at the Balmer
lines.

     Further selected visual magnitude estimates: Jan. 11.04 UT,
6.5 (P. Maley, Houston, TX); 13.816, 6.5 (K. Medway, Southampton,
England).


SUPERNOVA (?) IN NGC 1023
     F. Ciatti, Asiago Astrophysical Observatory, telexes that
observations made with the Schmidt telescope on Dec. 23 and Jan. 10
show no supernova in NGC 1023; a foreground star is very close to
the given position (cf. IAUC 4025).


NOVA VULPECULAE 1984 No. 1
     Selected visual magnitude estimates, some provided via AAVSO:
1984 Dec. 25.93 UT, 10.0 (P. Dombrowski, Glastonbury, CT); 29.95,
9.8 (J. Riggs, Buffalo, NY); 31.23, 10.0 (E. Schweitzer,
Strasbourg, France); 1985 Jan. 2.08, 9.6 (J. Buss, San Carlos, CA);
3.01, 9.4 (R. King, Duluth, MN).


1985 January 16                (4028)            Daniel W. E. Green

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