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Doppler spectroscopy |
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Doppler spectroscopy [‚däp·lər spek′träs·kə·pē]
(spectroscopy) A technique for measuring the speed with which an object is moving toward or away from the observer by measuring the amount that light from the object is shifted to a higher or lower frequency by the Doppler effect. Want to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit the webmaster's page for free fun content. |
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No references found | Researchers have previously used astrometry to measure the precise mass of planets found with the wobble method, but this is the first time the technique has been used to discover an extrasolar planet, says Man Boss of the Carnegie Institution for Science in Washington, D. Rather than looking for transits among a large group of stars, many of which aren't likely to have a planet in the first place, they first use the wobble method to winnow down the sample. The wobble method favors close-in planets since they exert the greatest pull. |
Wobble method |
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