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| Paper: |
EXOFIT: Bayesian Estimation of Orbital Parameters of Extrasolar Planets |
| Volume: |
450, Molecules in the Atmospheres of Extrasolar Planets |
| Page: |
147 |
| Authors: |
Balan, S. T.; Lahav, O. |
| Abstract: |
We introduce EXOFIT, a Bayesian tool for estimating orbital
parameters of extra-solar planets from radial velocity
measurements. EXOFIT can search for either one or two planets
at present. EXOFIT employs Markov Chain Monte Carlo method
implemented in an object oriented manner. As an example we re-analyze
the orbital solution of HD155358b and the results are compared with
that of the published orbital parameters. In order to check the
agreement of the EXOFIT orbital parameters with the
published ones we examined radial velocity data of 30 stars taken
randomly from www.exoplanet.eu. We show that while
orbital periods agree in both methods, EXOFIT prefers
lower eccentricity solutions for planets with higher (e ≥ 0.5)
orbital eccentricities. |
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