Constraints on Transit and Eclipse Probabilities of Long-Period Exoplanets from Orbital Elements

Details Constraints on Transit and Eclipse Probabilities of Long-Period Exoplanets from Orbital Elements Constraints on Transit and Eclipse Probabilities of Long-Period Exoplanets from Orbital Elements

Dec 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.6806v&link_type=abstract

American Astronomical Society, DPS meeting #41, #68.06

Mathematics

Probability

Scientific paper

Transiting exoplanets provide an opportunity to study mass-radius relation and internal structure of extrasolar planets. Long-period transiting planets in particular allow insight into planetary evolution akin to the Solar System where, in contrast to hot Jupiters, planets are not constantly exposed to the intense radiation of their parent stars. Observations of secondary eclipses additionally allow studies of exoplanet temperatures and large-scale exo-atmospheric properties. In our presentation, we show the dependence of transit and eclipse probabilities upon eccentricity and argument of periastron. We further illustrate resulting selection and observational strategies involved in our photometric survey (Transit Ephemeris Refinement and Monitoring Survey -- TERMS) of southern radial-velocity planets with the aim of detecting transit signatures. In addition to the effects of orbital eccentricity and argument of periastron upon transit probability, we elaborate on the implication of the presence/absence of observed transits for the observability of secondary eclipses, along with quantitative transit yield predictions and several case studies.

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