Estimates of dynamic parameters and boundaries of habitable zones of selected stars of the Pulkovo program

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• 作者：N. A. Shakht ; L. G. Romanenko ; D. L. Gorshanov ; O. O. Vasilkova
• 关键词：astrometry ; binary stars ; exoplanets ; habitable zones
• 刊名：Solar System Research
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：50
• 期：1
• 页码：56-66
• 全文大小：374 KB
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• 作者单位：N. A. Shakht (1)
  L. G. Romanenko (1)
  D. L. Gorshanov (1)
  O. O. Vasilkova (1)
  
  1. Main (Pulkovo) Astronomical Observatory, Russian Academy of Sciences, St. Petersburg, Russia
  
• 刊物类别：Physics and Astronomy
• 刊物主题：Physics
  Astronomy, Astrophysics and Cosmology
  Planetology
  Astronomy
  Astrophysics
  Russian Library of Science
  
• 出版者：MAIK Nauka/Interperiodica distributed exclusively by Springer Science+Business Media LLC.
• ISSN：1608-3423

文摘

A list of selected binary stars is presented that have been observed for several decades using a 26-inch refractor at the Pulkovo Observatory. These stars are at a distance from 3.5 to 25 pc from the Sun. They belong to spectral classes F, G, K, and M. Their masses range from 0.3 to 1.5 solar masses. We have analyzed them as possible parent stars for exoplanets taking into account the physical characteristics of these stars. In view of dynamic parameters and orbital elements that we have obtained by Pulkovo observations, ephemerides of positions for the coming years are calculated. The boundaries of the habitable zones around these stars are calculated. The astrometric signal that depends on the gravitational influence of hypothetical planets is estimated. Space telescopes for astrometric observations with microsecond accuracy can be used to detect Earth-like planets near the closest stars of this program. This paper presents an overview of astrometric programs of searches for exoplanets. Keywords astrometry binary stars exoplanets habitable zones