Central Bureau for Astronomical Telegrams
IAUC 5873: HD 98800; Notice AND SUBSCRIBERS
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Circular No. 5873
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM EASYLINK 62794505
MARSDEN@CFA or GREEN@CFA (.SPAN, .BITNET or .HARVARD.EDU)
HD 98800
D. Bockelee-Morvan, P. Colom, J. Crovisier, D. Gautier and E. Gerard,
Observatoire de Paris-Meudon; T. Owen, University of Hawaii; and D.
Despois, Observatoire de Bordeaux, report: "A search was made with the
Nancay radio telescope (beam 3'.5 x 19') for the 1667-MHz transition of
the OH radical toward the dusty K5V star HD 98800 (Zuckerman and Becklin
1993, Ap.J. 406, L33; see also IAUC 5804). An absorption signal
detected at a 7-sigma level on the line area in July may be associated
with the star. The peak flux density is -6 mJy, and the
central LSR velocity and width of the line are -20 km/s and 30 km/s,
respectively. The line is displaced toward the blue by 26 km/s with
respect to the velocity of the star. No signal was detected at 3'.5 east
and west of the nominal position. Both the line characteristics and the
galactic coordinates suggest that an interstellar origin is unlikely.
Observations at 18 cm with broad-band filters were not able to detect
point-source continuum emission above 50 mJy. Further observations are
needed to establish firmly whether the detected line is associated with
the circumstellar disk around HD 98800."
NOTICE TO CONTRIBUTORS AND SUBSCRIBERS
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1993 September 30 (5873) Brian G. Marsden
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