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 0.13M⊙. 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.
@article{arxiv.2108.11841,
title = {Does ADS 9346 have a low-mass companion?},
author = {O. V. Kiyaeva and M. Yu. Khovritchev and A. M. Kulikova and N. V. Narizhnaya and T. A. Vasilyeva and A. A. Apetyan and .},
journal= {arXiv preprint arXiv:2108.11841},
year = {2022}
}