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Paper detail

Does ADS 9346 have a low-mass companion?

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.

preprint2021arXivOpen access
O. V. KiyaevaM. Yu. KhovritchevA. M. KulikovaN. V. NarizhnayaT. A. VasilyevaA. A. Apetyan.
astro-ph.SR
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O. V. KiyaevaM. Yu. KhovritchevA. M. KulikovaN. V. NarizhnayaT. A. VasilyevaA. A. Apetyan.

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