Central Bureau for Astronomical Telegrams
IAUC 3344: NOVALIKE OBJECT IN Vul; WZ Sge; IR BURSTS FROM MXB1730-335
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Read IAUC 3345
Circular No. 3344
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
NOVALIKE OBJECT IN VULPECULA
Y. Kozai, Tokyo Astronomical Observatory, telexes that
Yoshiyuki Kuwano, Hita, Oita, has discovered a novalike object in
Vulpecula, as follows:
1979 UT R. A. (1950) Decl. mpv
Apr. 5.82639 20 19.0 +21 26 9.0
On Apr. 8.82 UT the visual magnitude was 8.7. The object was not
recorded on a Tri-X exposure obtained on Mar. 26.8 UT and must then
have been fainter than magnitude 11-12.
J. Mattei, American Association of Variable Star Observers,
reports the following visual magnitude estimate by R. Annal, Barstow,
CA: Apr. 10.49 UT, 8.6.
WZ SAGITTAE
D. Targan, Physics Department, Brown University, reports the
following photoelectric observation, obtained with the 155-cm
reflector at Harvard Observatory's Agassiz Station: Apr. 8.3715 UT,
V = 14.40 +/- 0.05. Comparison star HD 191083 (assumed V = 8.76).
INFRARED BURSTS FROM MXB1730-335
K. M. V. Apparao and S. M. Chitre, Tata Institute of Fundamental
Research, Bombay; and N. M. Ashok and P. V. Kulkarni, Physical
Research Laboratory, Ahmedabad, report the discovery of infrared
bursts from Liller 1 (IAUC 2929, 2936), the optical candidate for
the Rapid Burster. The observation was made during Apr. 4d21h29m-5d00h10m
UT with the 100-cm telescope of the Indian Institute of
Astrophysics at Kavalur. A total of six bursts were observed, and
they had the following characteristics: risetimes of ~ 2 s; gradual
decay to the background in ~ 30 s; full width at half maximum ~ 10
s; and peak intensity ~ 1 magnitude above the steady source in the
H band (1.6 um). It is estimated that the energy in the bursts is
10**38 erg, assuming a distance of 10 kpc for the object.
1979 April 10 (3344) Brian G. Marsden
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