A new method based on Markov chains for deriving SB2 orbits directly from their spectra

J. -B. Salomon; R. Ibata; P. Guillout; J. -L. Halbwachs; F. Arenou; B. Famaey; Y. Lebreton; T. Mazeh; D. Pourbaix; L. Tal-Or

A new method based on Markov chains for deriving SB2 orbits directly from their spectra

Solar and Stellar Astrophysics 2012-10-03 v1 Astrophysics of Galaxies

Authors: J. -B. Salomon , R. Ibata , P. Guillout , J. -L. Halbwachs , F. Arenou , B. Famaey , Y. Lebreton , T. Mazeh , D. Pourbaix , L. Tal-Or

View on arXiv ↗ PDF ↗

Abstract

We present a new method to derive orbital elements of double-lined spectroscopic binaries (SB2). The aim is to have accurate orbital parameters of a selection of SB2 in order to prepare the exploitation of astrometric Gaia observations. Combined with our results, they should allow one to measure the mass of each star with a precision of better than 1%. The new method presented here consists of using the spectra at all epochs simultaneously to derive the orbital elements without templates. It is based on a Markov chain including a new method for disentangling the spectra.

Cite

@article{arxiv.1210.0841,
  title  = {A new method based on Markov chains for deriving SB2 orbits directly from their spectra},
  author = {J. -B. Salomon and R. Ibata and P. Guillout and J. -L. Halbwachs and F. Arenou and B. Famaey and Y. Lebreton and T. Mazeh and D. Pourbaix and L. Tal-Or},
  journal= {arXiv preprint arXiv:1210.0841},
  year   = {2012}
}

Comments

5 pages, 2 figures, Proceeding of the SF2A 2012

A new method based on Markov chains for deriving SB2 orbits directly from their spectra

Abstract

Cite

Comments

Related papers