In the Shadows of Giants: Tomographic Rossiter-McLaughlin Analyses of Wasp Planets

Details In the Shadows of Giants: Tomographic Rossiter-McLaughlin Analyses of Wasp Planets In the Shadows of Giants: Tomographic Rossiter-McLaughlin Analyses of Wasp Planets

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011ess.....2.2602m&link_type=abstract

American Astronomical Society, ESS meeting #2, #26.02

Astronomy and Astrophysics

Astronomy

Scientific paper

The spin-orbit alignment of a transiting planetary system can be measured via the radial velocity anomaly caused when the planet partially obscures light from the stellar disc during transit (the Rossiter-McLaughlin effect). We present a tomographic method for analysing this effect. By modelling the time-variable asymmetry of the average stellar line profile during transit we can determine the projected spin-orbit alignment and stellar rotation rate. We present results for multiple known planets from the WASP survey and discuss the importance of this method in confirming planets around Main Sequence stars of earlier spectral type, which have been previously inaccessible to transiting-planet hunters.

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