Times of light minima for V410 Aur Virtual Observatory Resource

Authors
  1. Liao W.-P.
  2. Qian S.-B.
  3. Shi X.-D.
  4. Li L.-J.
  5. Liu N.-P.
  6. He J.-J.
  7. Zang L.,Li P.
  8. Published by
    CDS
Abstract

V410 Aur is a known deep and low-mass-ratio contact binary with a spectroscopically tertiary component and a visual companion. However, the physical and orbital properties of the tertiary are unknown. We constructed (O-C) curve with 117 new eclipse times and those collected from the literature, which shows a cyclical variation with a period of 25.44(+/-1.17)yr and a projected semimajor axis of 0.0348(+/-0.0021)d while it undergoes a long-term period decrease at a rate of dP/dt=-1.58x10^-7^d/yr. The cyclical variation is analyzed for the light-travel time effect. The minimum mass of the third body is determined as 1.39(+/-0.13)M_{sun}_ that is much larger than the inferred value (0.97M_{sun}_) of spectroscopic investigation, which indicates that the spectroscopically tertiary is a single-lined spectroscopic binary with an unseen component. The maximum orbital semimajor axis 6.19(+/-0.67)au of the third body is determined. Gaia detected a visual companion to V410 Aur at practically the same distance from the Sun nicely confirming the physical bond. These results reveal that V410 Aur contains a single-lined spectroscopic binary with a visual companion in a quintuple stellar system. TESS photometric solutions confirmed that V410 Aur is a deep overcontact binary with a fill-out factor of 73.83(88)% where the additional light contribution is about 24.80(18)%. The continuous variations of light curves are explained by the evolution of a dark spot on the more massive component. The parabolic variation in the (O-C) curve may be caused by the mass transfer from the massive component to the less massive one in the deep overcontact binary.

Keywords
  1. eclipsing-binary-stars
  2. spectroscopic-binary-stars
  3. variable-stars
  4. astronomical-reference-materials
Bibliographic source Bibcode
2022ApJ...927..183L
See also HTML
https://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/927/183
IVOA Identifier IVOID
ivo://CDS.VizieR/J/ApJ/927/183

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http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/927/183
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History

2024-02-27T09:10:13Z
Resource record created
2024-02-27T08:13:29Z
Updated
2024-02-27T09:10:13Z
Created

Contact

Name
CDS support team
Postal Address
CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France
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cds-question@unistra.fr