Central Bureau for Astronomical Telegrams
IAUC 3976: N Vul 1984; NOTICE RE Tlgms
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Circular No. 3976
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
The following photoelectric observations have been reported:
1984 UT V U - B B - V V - R R - I Observer
Aug. 2.29 7.23 -0.32 +0.56 +0.49 +0.29 Robb
3.26 7.24 -0.43 +0.58 +0.49 +0.32 "
4.33 6.95 -0.48 +0.55 +0.48 +0.33 "
5.28 6.43 -0.42 +0.53 +0.45 +0.29 "
6.21 6.69 +0.12 +0.63 +0.49 +0.23 "
6.89 7.29 +1.04 Gregory
8.39 8.33 -0.67 +0.67 +0.84 +0.63 Robb
9.22 8.43 -0.80 +0.64 +0.88 +0.66 "
10.24 8.62 -0.87 +0.60 +0.93 +0.63 "
12.43 8.70 -0.72 +0.43 +0.87 +0.30 "
13.20 8.11 -0.71 +0.44 +0.67 +0.22 "
13.89 8.03 -0.55 +0.36 Schnell
15.92 8.36 -0.49 +0.34 "
R. M. Robb and L. B. G. Knee (University of Victoria). 0.51-m
Cassegrain reflector at the Climenhaga Observatory. The R
measurements are strongly filter-dependent because of the H-alpha
emission. The comparison stars used were SAO 87213 and 87211.
C. Gregory (near the Observatoire de Haute Provence).
A. Schnell and H. Stockenhuber (Figl Observatory, Vienna).
Spectroscopic observations by E. M. Leibowitz, P. A. Ibbetson
and S. Ben Gigi with the Digicon camera at the Wise Observatory
show an increase by a factor of three in the intensity of Fe II
emission relative to the Balmer lines between July 31 and Aug. 1,
followed by a steady decline in the ratio (up to Aug. 13). Strong
He I 588-nm emission was present at ~ 15 percent of the intensity
of H-beta on Aug. 8 but not during July 31-Aug. 2 and on Aug. 13.
NOTICE CONCERNING TELEGRAMS
It is once again an 'open season' for making changes in the
list of subscribers to the Central Bureau's telegram service.
Subscribers who wish to make address changes, category changes,
etc., are requested to inform us of said changes by Sept. 30. We
regret that a charge of S50.00 must be made for address changes
and deletions (but not additions) outside these biannual seasons.
1984 August 20 (3976) Brian G. Marsden
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