Bibcode
DOI
Iglesias-Marzoa, R.; López-Morales, M.; Arévalo Morales, M. J.
Bibliographical reference
Publications of the Astronomical Society of the Pacific, Volume 127, issue 952, pp.567-582
Advertised on:
6
2015
Citations
55
Refereed citations
53
Description
The fitting of radial velocity curves is a frequent procedure in binary
star and exoplanet research. In the majority of cases, the fitting
routines need to be fed with a set of initial parameter values and
priors from which to begin the computations and their results can be
affected by local minima. We present a new code, the
rvfit code, for fitting radial
velocities of stellar binaries and exoplanets using an adaptive
simulated annealing (ASA) global minimization method, which quickly
converges to a global solution minimum without the need to provide
preliminary parameter values. We show the performance of the code using
both synthetic and real datasets: double-lined binaries, single-lined
binaries, and exoplanet systems. In all examples, the Keplerian orbital
parameters fitted by the rvfit code
and their computed uncertainties are compared with literature solutions.
Finally, we provide the source code, with a working example and a
detailed description of how to use it.
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Binary Stars
The study of binary stars is essential to stellar astrophysics. A large number of stars form and evolve within binary systems. Therefore, their study is fundamental to understand stellar and galactic evolution. Particularly relevant is that binary systems are still the best source of precise stellar mass and radius measurements. Research lines
Pablo
Rodríguez Gil