Notes

Slide Show

Outline

1	Extra Solar Planets
2	Binary Stars
3	The Center of Mass
4	Estimating Stellar Masses
5	Examples:
6	Visual Binaries
7	Spectroscopic Binaries
8	Spectroscopic Binaries (II)
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10	Eclipsing Binaries
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12	Eclipsing Binaries (III)
13	Extra-Solar Planets Hard to see faint planet right next to very bright star Two indirect techniques available (Like a binary star system but where 2nd “star” has extremely low mass) Watch for Doppler “wobble” in position/spectrum of star Watch for “transit” of planet which slightly dims light from star About 230 planets discovered since 1996 See http://exoplanets.org/ Tend to be big (³Jupiter) and very close to star (easier to see)
14	Terrestrial Planet Finder
15	Which planets can retain which gasses?