Central Bureau for Astronomical Telegrams
IAUC 3969: N Vul 1984; 1984h
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Circular No. 3969
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
Y. Andrillat and L. Houziau, Observatoire de Haute Provence,
telex: "On spectrograms taken on Aug. 2.92 UT at dispersions of 80
and 20 A/mm in the blue region the nova exhibits typical broad
emissions (~ 560 km/s for the Balmer lines) and a broad absorption
component whose center is at -710 km/s. Balmer lines are seen up
to H12, and Fe II lines show the same profile but are considerably
weaker. There are strong Ca II lines with a wide K-line absorption
centered on 392.47 nm; the interstellar component is located
at 393.27 nm. The ultraviolet Ti II doublet at 375.9 and 376.1 nm
is quite conspicuous, but Mg II 448.1 nm was not recorded, and the
presence of Si II 412.8-413.1 nm is doubtful." Another telex from
Andrillat reports: "A near-infrared spectrogram was obtained on
Aug. 3 at dispersion 230 A/mm with the 1.9-m reflector and a reticon
receiver. It shows the following broad emission features: the
Paschen series from P7; O I 777.3-844.6 nm; the Ca II triplet at
849.8, 854.2 and 866.2 nm; N I multiplets 1, 2, 7, 8, 18, 19 and
28; C I multiplets 1 and 10; and very weak lines of Mg II 787.7-
789.6 nm. These emission profiles are characterized by a broad
absorption component shifted to ~ -820 km/s. The expansion velocity
deduced from the total width of the emission lines is ~ 1100 km/s.
On Aug. 4 the spectrum did not show important changes, but on Aug.
5 the absorption components were stronger and the O I emission
lines had decreased in intensity."
Further selected visual magnitude estimates: Aug. 1.61 UT,
7.5 (R. H. McNaught, Coonabarabran, N.S.W.); 2.58, 7.5 (McNaught);
3.11, 6.7 (D. Weier, Madison, WI); 3.85, 7.1 (M. Cavagna, Milan,
Italy); 4.11, 6.3 (Weier); 4.25, 6.3 (C. Scovil, Stamford, CT);
4.90, 6.6 (Cavagna); 5.21, 6.4 (Scovil); 6.19, 6.8 (J. McKenna,
Upper Montclair, NJ); 6.24, 6.9 (P. Sventek, Houston, TX).
PERIODIC COMET FAYE (1984h)
J. Gibson provides the following recent position and two
prerecovery positions from exposures with the 1.2-m Palomar Schmidt:
1983/84 UT R.A. (1950.0) Decl. m2
Aug. 31.17572 18 21 34.67 -12 06 47.1 20.5
31.20767 18 21 34.45 -12 06 53.7
July 21.49221 4 58 11.16 +19 14 57.9
1984 August 7 (3969) Brian G. Marsden
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