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4. The Radial 1illelocity method uses the doppler shift to detect exoplanets. Remember, velocity is only observed with motion along the line of sight of

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4. The Radial 1illelocity method uses the doppler shift to detect exoplanets. Remember, velocity is only observed with motion along the line of sight of the observer, toward or away (This can be angularly toward and away as well; not simply directly toward or directly away). In the Exoplanet Doppler Shifts image, the large yellow circle in the center represents another star other than the Sun traveling in a counIELCJookwise circle (remember the Sun is orbiting a center of mass HOT located at its own center}. The smaller gray dot represents exoplanet orbiting the star. The Earth is far away and is represented by the entire left side of the page. E when the star moves toward the earth the radial velocity would be negative (mam. And when the star moves away from the Earth, the radial velocity would be positive [redshifted). Anytime the star moves directly up or down [perpendicular or left to right relative to Earlh), it's radial velocity would dive through the horizontal line on the chart, which represents zero radial velocity detected. See if you can match the corresponding locations of radial velocity on the curve to the location of the star in its path around the center of mass. A B C D E '.I c! H: 3,, ' 1- _ -3 .7 E 'D Euuolnm1oppcr 5'1 '15

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