ROSSITER-MCLAUGHLIN OBSERVATIONS OF 55 Cnc e
نویسندگان
چکیده
منابع مشابه
Exoplanets and the Rossiter-McLaughlin Effect
A transiting planet eclipses part of the rotating stellar surface, thereby producing an anomalous Doppler shift of the stellar spectrum. Here I review how this “Rossiter-McLaughlin Effect” can be used to characterize exoplanetary systems. In particular, one can measure the angle on the sky between the orbital axis and the stellar rotation axis. This may help to discriminate among migration theo...
متن کاملExoplanetary Spin-orbit Alignment: Results from the Ensemble of Rossiter-mclaughlin Observations
One possible diagnostic of planet formation, orbital migration, and tidal evolution is the angle ψ between a planet’s orbital axis and the spin axis of its parent star. In general, ψ cannot be measured, but for transiting planets one can measure the angle λ between the sky projections of the two axes via the Rossiter-McLaughlin effect. Here, we show how to combine measurements of λ in different...
متن کاملImproved modeling of the Rossiter-McLaughlin effect for transiting exoplanets
We present an improved formula for the anomalous radial velocity of the star during planetary transits due to the Rossiter-McLaughlin (RM) effect. The improvement comes from a more realistic description of the stellar absorption line profiles, taking into account stellar rotation, macroturbulence, thermal broadening, pressure broadening, and instrumental broadening. Although the formula is deri...
متن کاملMeasurement of the Rossiter–McLaughlin Effect in the Transiting Exoplanetary System TrES-1∗
We report a measurement of the Rossiter–McLaughlin effect in the transiting extrasolar planetary system TrES-1, via simultaneous spectroscopic and photometric observations with the Subaru and MAGNUM telescopes. By modeling the radial velocity anomaly that was observed during a transit, we determine the sky-projected angle between the stellar spin axis and the planetary orbital axis to be λ = 30...
متن کاملOn the possibility of detecting extrasolar planets’ atmospheres with the Rossiter-McLaughlin-effect
Context. The detection of extrasolar planets’ atmospheres requires very demanding observations. For planets that can not be spatially separated from their host stars, i.e. the vast majority of planets, the transiting planets are the only ones allowing to probe their atmospheres. This is possible from transmission spectroscopy or from measurements taken during secondary eclipse. An alternative i...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2014
ISSN: 2041-8213
DOI: 10.1088/2041-8205/792/2/l31