Central Bureau for Astronomical Telegrams
IAUC 3673: 1982 DA; N Aql 1982
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Circular No. 3673
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 617-864-5758
1982 DA
The following positions have been reported:
1982 UT R. A. (1950) Decl. Mag. Observer
Feb. 18.27639 10 51 41.09 +16 05 59.2 Shoemaker
18.28819 10 54 40.86 +16 06 32.7 "
19.17917 10 54.4 +17 09 Howell
20.37639 10 54.3 +17 54 "
20.79375 10 54.0 +18 11 15 Wei
23.03750 10 53.3 +19 57 15 Young
C. S. Shoemaker, S. J. Eus and E. Howell (Palomar Observatory).
S. Wei (Purple Meuntain Obs.). Independent discovery by Y. Ge.
A. Young (Hemingford Abbots, near Cambridge, England).
NOVA AQUILAE 1982
R. Argyle, Royal Greenwich Observatory, provides the following
precise position derived from a single plate taken on Feb. 22 at
mpg = 11: R.A. = 19h20m50s14, Decl. = +2o23'35".4 (+/- 0".5; equinox 1950.0).
L. Rosino, Asiago Astrophysical Observatory, telexes: "A spectrogram
obtained at Asiago by T. Iijima on Feb. 13 (dispersion 6 nm
at H-gamma) shows wide and diffuse Balmer lines (halfwidth ~ 2300 km/s)
with a sharp central core. Narrow emission lines of He I and Fe II
are also represented. No P-Cyg absorption has been observed. The
presence of a weak, broad emission of He II 469 nm is suspected.
The spectrum of this nova, which has had an extremely rapid decline,
is therefore rather peculiar."
J. C. Blades, European Space Agency, Villafranca, reports that
he, M. J. Seaton and M. A. J. Snijders observed the nova with the
IUE satellite. The fes nagnitude (520 nm) averaged 10.8 on Feb.
24.42 UT, but monitoring suggests the optical flux might be variable
on a timescale of hours. The 200-300-nm wavelength region shows
a heavily-reddened continuum with broad H-sigma II 280 nm emission. This
spectrum closely resembles that found for the transitional phase in
V1668 Cyg (= Nova Cyg 1978). However, the 120-200-nm region differs
drastically: instead of a faint continuum with strong low-ionization
lines there is a prominent continuum with P-Cyg-type features at 155
and 139 nm tentatively identified with C IV and Si IV; there is also
strong absorption at 123 nm that could be N V.
1982 March 1 (3673) Brian G. Marsden
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