Transits across rapidly-rotating stars

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Transits across rapidly-rotating stars

Post by Lazarus on Thu Sep 10, 2009 4:25 pm

Thanks to gravity-darkening, you don't need to measure the Rossiter-McLaughlin effect to determine the angle between the equator of the star and the planetary orbit. Maybe Kepler will detect a few of these...

arXiv: Transit Lightcurves of Extrasolar Planets Orbiting Rapidly-Rotating Stars

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Re: Transits across rapidly-rotating stars

Post by Edasich on Fri Sep 11, 2009 3:28 am

It is funny they imagine a transiting planet around Altair.
However I think that star is hiding something.

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Re: Transits across rapidly-rotating stars

Post by Sirius_Alpha on Fri Sep 11, 2009 9:25 am

Speaking of a purely hypothetical planet around Altair, anyone remember this great image of the star showing the limb darkening? (IIRC, it was the first observational verification of the phenomenon)



I wonder what this image would look like with a planet in transit ...

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