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Catalogue and Parallaxes of Resolved Spectroscopic Binaries | Synapse

April 13, 2026

Catalogue and Parallaxes of Resolved Spectroscopic Binaries

Key Points

To present an updated catalogue of resolved spectroscopic binaries and examine the orbital parallaxes of distant objects.
Compilation of data on resolved spectroscopic binary systems.
Comparison of orbital parallaxes with trigonometric parallaxes from Gaia DR3.
Analysis of discrepancies for distant objects with d ≥ 500 pc.
Orbital parallaxes of distant objects consistently exceed Gaia DR3 parallaxes.
Discrepancy observed in all cases examined in the catalogue.
Discussion of potential reasons for the observed differences.

Abstract

We present the current version of the Catalogue of Resolved Spectroscopic Binary Systems, which, in particular, contains orbital parallaxes. We found that the orbital parallaxes of all distant objects (with d 500 pc) included in the catalogue systematically exceed their trigonometric Gaia DR3 parallaxes and discuss possible reasons for this discrepancy.

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Authors

A

A. M. Sachkov

O

O. Y. Malkov

Journals

Moscow University Physics Bulletin

Actions

Institutions

Lomonosov Moscow State University

Institute of Astronomy

Institute of Applied Astronomy

References and Citations

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Cite this study

Sachkov et al. (Mon,) studied this question.

www.synapsesocial.com/papers/69dc87ea3afacbeac03e9ebd — DOI: https://doi.org/10.3103/s0027134925701796