Optimum Strategy for RV Searches

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Optimum Strategy for RV Searches

Post by lodp on 14th December 2009, 9:33 pm

Given that Keck & the AAT combined for some of the recent (yesterday) announcements isn't it time that they all got together so we can have high cadence observations of likely targets on a 24 hour basis i.e. observed by 2 or 3 suitable instruments? (Gets rid of those horrible 24hr period False alarms). What would the optimal config be? Tetrahedral would be the minimum - but where on the earth? We'd have to consider what's in place and then ensure that the same targets are observed by 2+ instruments at the sametime to baseline them. Has anyone done an analysis of the locations o the RV hunters and where the next best place for one would be?

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Re: Optimum Strategy for RV Searches

Post by Sirius_Alpha on 14th December 2009, 10:47 pm

Orbital periods that are a day in length will have significant phase change over the course of the single night they are observed. Spend a night RV-spamming the planet, and you can get a nice, nearly half sinusoidal RV wave. You could probably deduct the planet's existence from that, and over a few nights of this gain off of it all the orbital parameters you would be able to otherwise, but the eccentricity may be a bit unconstrained. With telescopes in Hawaii, Texas, Chile, and the Canary Islands at least, you can be sure that it shouldn't be hard to get observations during other parts of the planet's orbital period.

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Re: Optimum Strategy for RV Searches

Post by Borislav on 14th December 2009, 11:34 pm

lodp wrote:We'd have to consider what's in place and then ensure that the same targets are observed by 2+ instruments at the sametime to baseline them. Has anyone done an analysis of the locations o the RV hunters and where the next best place for one would be?


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This project, which will be completed will provide 24-hour coverage of high-precision observations of bright stars.

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