O. V. Kiyaeva, M. Yu. Khovritchev, A. M. Kulikova, N. V. Narizhnaya, T. A. Vasilyeva, A. A. Apetyan, .
Published 2021-08-26Version 1
Based on the photographic and the CCD observations of the relative motion of A, B components of the binary system ADS~9346 obtained with the 26-inch refractor of the Pulkovo Observatory during 1979-2019, we discover an invisible companion associated with the A-star. Comparison of the ephemerides with the positional and the spectroscopic observations allowed us to calculate the preliminary orbit of the photocenter ($P=15$ years). The minimal mass of the companion is approximately $0.13~M_\odot$. The existence of the invisible low-mass companion is implied by the IR-excess based on the IRAS data. To confirm this, additional observations of the radial velocity near the periastron need to be carried out.
Comments: The paper is accepted in RAA
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