Other
Scientific paper
Sep 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009dps....41.0507b&link_type=abstract
American Astronomical Society, DPS meeting #41, #5.07
Other
Scientific paper
Fast-rotating stars are oblate and non-isothermal; their poles hotter than their equators in an effect known as gravity-darkening. I show here that planetary transits across such non-uniform stellar disks create unusual and distinctive lightcurves that can be used to measure the system's stellar-spin/planetary orbit alignment. Lightcurves of inclined planets should be easily detected among the 5% of Kepler target stars that are expected to be rapidly rotating. The stellar spin / planet orbit alignment bears the fingerprints of how these planets form and evolve -- spin-orbit misaligned systems may be produced by planet-planet scattering rather than orderly orbital migration. The usual method to measure spin/orbit alignment is the Rossiter-McLaughlin (R-M) effect, but inherent stellar jitter and rotationally broadened absorption lines make Rossiter-McLaughlin difficult for fast-rotating stars. Since most if not all stars earlier than mid-F spectral type are expected to be rapidly rotating, Kepler transit lightcurves represent our best opportunity for understanding the planet formation process around high-mass stars.
No associations
LandOfFree
Probing Planet Formation around Fast-Rotating Stars with Kepler Lightcurves does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Probing Planet Formation around Fast-Rotating Stars with Kepler Lightcurves, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Probing Planet Formation around Fast-Rotating Stars with Kepler Lightcurves will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-839207