What question did this study set out to answer?

The research aims to confirm the existence and describe the orbits of spectroscopic binary candidates using SALT data.

April 4, 2026Open Access

Spectroscopic Orbits for Three SB2s and One Hierarchical Triple Using SALT Data

Key Points

The research aims to confirm the existence and describe the orbits of spectroscopic binary candidates using SALT data.
Obtained new observations using the Southern African Large Telescope (SALT).
Identified three SB2 systems with short circular orbits.
Analyzed one hierarchical triple system with an inner eccentric and an outer orbit.
Confirmed three SB2 systems with orbits shorter than 10 days.
Characterized one hierarchical triple system with an inner close binary and an outer rapidly rotating star.
Failed to derive reliable orbital solutions for two additional SB2 candidates.

Abstract

We confirmed four spectroscopic binary candidates using new observations obtained with SALT. Three SB2 systems (HD 20784, HD 43519A, HD 62153A) exhibit circular orbits with periods shorter than 10 days, whereas one hierarchical triple system (HD 56024) contains a close binary with an inner eccentric orbit with a period of approximately 14 days, composed of nearly identical stellar components, and a rapidly rotating star on an outer eccentric orbit with a period of approximately 400 days. For two additional SB2 candidates (HD 198174 and HD 208433), our new observations do not allow us to derive reliable orbital solutions.

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Cite This Study

Kovalev et al. (Thu,) studied this question.

synapsesocial.com/papers/69d0ae94659487ece0fa48e9 https://doi.org/https://doi.org/10.3390/galaxies14020027

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