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Paper detail

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

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.

preprint2012arXivOpen access
J. -B. SalomonR. IbataP. GuilloutJ. -L. HalbwachsF. ArenouB. FamaeyY. LebretonT. MazehD. PourbaixL. Tal-Or
astro-ph.GAastro-ph.SR
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J. -B. SalomonR. IbataP. GuilloutJ. -L. HalbwachsF. ArenouB. FamaeyY. LebretonT. MazehD. PourbaixL. Tal-Or

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