Nearby low-mass triple system GJ795

Abstract

We report the results of our optical speckle-interferometric observations of the nearby triple system GJ795 performed with the 6-m BTA telescope with diffraction-limited angular resolution. The three components of the system were optically resolved for the first time. Position measurements allowed us to determine the elements of the inner orbit of the triple system. We use the measured magnitude differences to estimate the absolute magnitudes and spectral types of the components of the triple: $M_V^{Aa}$=7.31$\pm$0.08, $M_V^{Ab}$=8.66$\pm$0.10, $M_V^B$=8.42$\pm$0.10, $S{p}_{Aa}$ $\approx$K5, $S{p}_{Ab}$ $\approx$K9, $S{p}_B$ $\approx$K8. The total mass of the system is equal to $\Sigma {\mathcal{M}}_{AB}$=1.69$\pm 0.27{\mathcal{M}}_{\odot }$. We show GJ795 to be a hierarchical triple system which satisfies the empirical stability criteria.

6 pages, 2 figures, published in Astrophysical Bulletin

References in corpus (2)

• Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 parsecs: The Northern Sample I
• A highly abnormal massive star mass function in the Orion Nebula cluster and the dynamical decay of trapezia systems

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• Bayes-based orbital elements estimation in triple hierarchical stellar systems