Dr John Taylor j.k.taylor@keele.ac.uk
On the Determination of Transiting Planet Properties from Light and Radial Velocity Curves
Taylor
Authors
Abstract
A recent publication has suggested a method to determine the masses and radii of the components of an eclipsing system using only a light curve and radial velocities of one component. If true, this would have immediate impact in expediting the study of transiting extrasolar planet and brown dwarf systems. The method is intended for situations where the mass ratio is significantly different from zero, but implicitly also requires the assumption that the mass ratio is negligible. We investigate both cases, finding that when the mass ratio is significant the method is mathematically identical to existing approaches, and when the mass ratio is negligible the equations become undefined. We therefore conclude that the method cannot be used to measure the physical properties of such systems from observations alone.
Citation
Taylor. (2016). On the Determination of Transiting Planet Properties from Light and Radial Velocity Curves. Publications of the Astronomical Society of the Pacific, 129(972), Article 024401. https://doi.org/10.1088/1538-3873/129/972/024401
Journal Article Type | Article |
---|---|
Acceptance Date | Oct 22, 2016 |
Online Publication Date | Dec 28, 2016 |
Publication Date | Dec 28, 2016 |
Journal | Publications of the Astronomical Society of the Pacific |
Print ISSN | 0004-6280 |
Publisher | IOP Publishing |
Peer Reviewed | Peer Reviewed |
Volume | 129 |
Issue | 972 |
Article Number | 024401 |
DOI | https://doi.org/10.1088/1538-3873/129/972/024401 |
Keywords | planetary systems, stars, fundamental parameters |
Publisher URL | https://doi.org/10.1088/1538-3873/129/972/024401 |
Files
4-PASP-resubmission.pdf
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Publisher Licence URL
https://creativecommons.org/licenses/by-nc/4.0/
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