Astrophysical Bulletin

, Volume 69, Issue 4, pp 461–471

An analytic algorithm to calculate the inclination, ascending node, and semimajor axis of spectroscopic binary orbits using a single speckle measurement and the parallax

  • J. A. Docobo
  • P. P. Campo
  • M. Andrade
  • E. P. Horch
Article

DOI: 10.1134/S1990341314040087

Cite this article as:
Docobo, J.A., Campo, P.P., Andrade, M. et al. Astrophys. Bull. (2014) 69: 461. doi:10.1134/S1990341314040087

Abstract

It is well known that in spectroscopic binary orbits, the inclination, the ascending node, and the semimajor axis remain undetermined, therefore the principal objective of this research is to establish an analytic methodology for the calculation of these parameters for spectroscopic binaries, both single-lined (SB1) and double-lined (SB2). In other words, the goal is to determine their “three-dimensional” orbits using a single speckle measurement (ρ, θ, t) and the parallax (π). Moreover, estimates of the individual masses of each system can also be obtained. The proposed algorithm was successfully applied to SB1 systems: YSC 148 (HD 37393) and CHR 225 (HD 34318), and SB2 systems: LSC 1 Aa1,2 (HD 200077) and Mkt 11 Aa, Ab (HD 358). In this late case, previously determined spectroscopic and visual orbits have been used to compare and contrast the results obtained from them with our results. The methodology presented is especially interesting for those cases in which it is only possible to resolve the spectroscopic binary in the zones of maximum angular separation by optical means thereby making it impossible to avail of sufficient observations in order to calculate the visual orbit.

Keywords

techniques high angular resolution—techniques interferometric—binaries general 

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Copyright information

© Pleiades Publishing, Ltd. 2014

Authors and Affiliations

  • J. A. Docobo
    • 1
    • 2
  • P. P. Campo
    • 1
  • M. Andrade
    • 1
    • 3
  • E. P. Horch
    • 4
  1. 1.R. M. Aller Astronomical ObservatoryUniversity of Santiago de CompostelaSantiago de CompostelaSpain
  2. 2.Faculty of MathematicsUniversity of Santiago de CompostelaSantiago de CompostelaSpain
  3. 3.Higher Polytechnic SchoolUniversity of Santiago de CompostelaLugoSpain
  4. 4.Southern Connecticut State UniversityNew HavenUSA

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