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Extrasolar Visions II

Extrasolar Planets.
 
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 Transits across rapidly-rotating stars

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Lazarus
dF star
dF star



Number of posts : 3337
Registration date : 2008-06-12

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PostSubject: Transits across rapidly-rotating stars   Transits across rapidly-rotating stars Empty10th September 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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Edasich
dK star
dK star
Edasich


Number of posts : 2267
Location : Tau Ceti g - Mid Latitudes
Registration date : 2008-06-02

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PostSubject: Re: Transits across rapidly-rotating stars   Transits across rapidly-rotating stars Empty11th September 2009, 3:28 am

It is funny they imagine a transiting planet around Altair. Transits across rapidly-rotating stars Icon_lol
However I think that star is hiding something.
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Sirius_Alpha
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Sirius_Alpha


Number of posts : 4319
Location : Earth
Registration date : 2008-04-06

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PostSubject: Re: Transits across rapidly-rotating stars   Transits across rapidly-rotating stars Empty11th September 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)

Transits across rapidly-rotating stars Altair

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

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PostSubject: Re: Transits across rapidly-rotating stars   Transits across rapidly-rotating stars Empty

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