Orbits of six late-type active-chromosphere binaries

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Griffin R. F., Ak N.

ASTROPHYSICS AND SPACE SCIENCE, vol.330, no.1, pp.47-60, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 330 Issue: 1
  • Publication Date: 2010
  • Doi Number: 10.1007/s10509-010-0381-3
  • Journal Name: ASTROPHYSICS AND SPACE SCIENCE
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.47-60
  • Keywords: Binary stars, Orbital solution, Cool stars, PHOTOELECTRIC RADIAL-VELOCITIES, MEDIUM-SENSITIVITY SURVEY, ALL-SKY SURVEY, OPTICAL ATLAS, STARS, PHOTOMETRY, CATALOG, SEARCH, DWARF, VARIABILITY
  • Erciyes University Affiliated: Yes

Abstract

We present spectroscopic orbits for the active stars HD 82159 (GS Leo), HD 89959, BD +39° 2587 (a visual companion to HD 112733), HD 138157 (OX Ser), HD 143705, and HD 160934. This paper is a sequel to one published in this journal in 2006, with similar avowed intention, by Gálvez et al. They showed only graphs, and gave no data, and no orbital elements apart from the periods (only two of which were correct) and in some cases the eccentricities. Here we provide full information and reliable orbital elements for all the stars apart from HD 160934, which has not completed a cycle since it was first observed for radial velocity.

We present spectroscopic orbits for the active stars HD 82159 (GS Leo), HD 89959, BD +39A degrees 2587 (a visual companion to HD 112733), HD 138157 (OX Ser), HD 143705, and HD 160934. This paper is a sequel to one published in this journal in 2006, with similar avowed intention, by Galvez et al. They showed only graphs, and gave no data, and no orbital elements apart from the periods (only two of which were correct) and in some cases the eccentricities. Here we provide full information and reliable orbital elements for all the stars apart from HD 160934, which has not completed a cycle since it was first observed for radial velocity.