Presentation on theme: "Recall the Doppler Method The doppler method of finding planets."— Presentation transcript:
Recall the Doppler Method The doppler method of finding planets
Allows multiple planets to be discovered
Water Found in system!
Is this Pandora? Credit: John Whatmough Credit: John Whatmough (Extrasolar Visions)
First image of extra solar planet (5M J )
So what have we found So Far? 174 Planets with Semi Major axis less than 0.4 AU (Mercury/sun distance) 42 Planets with Semi Major axis between 0.4 AU and 0.85 (inside sols life zone) 65 Planets with Semi Major axis between 0.85 AU and 1.4 (inside sols life zone) 140 Planets with Semi Major axis 1.4 AU and 640 AU But this isnt the whole story!
Planets near dwarf stars? Planet NamePl. Mass Pl. Radius Pl. Period Pl. Semi- axis St. Dist St. Spec. Type St. Mass St. [Fe/H] St. Radius GJ 1214 b V391 Peg b sdB Gliese 876 b M4 V Gliese 876 c M4 V Gliese 876 d M4 V Gl 179 b M Gl 581 b M Gl 581 c M Gl 581 d =7 M E M Gl 581 e M HIP b M4V Note: M e =.003 M j
A super Earth? Gliese 876d Star M3 15 lyrs Dist=.02 AU M = 7 M E Gliese 876 b,c in 2:1 orbital resonance
Search for Earth like Planets! UrIFI&feature=fvwhttp://www.youtube.com/watch?v=v3Kcw0 UrIFI&feature=fvw
What about Other Multiple Planet Systems?
A rare find..inner planets
The HD system
Earth like planets? &feature=relatedhttp://www.youtube.com/watch?v=wJXSSYyIVqw &feature=related From NatGeo Gliese 581e 3.5 M E
Project Kepler Goal is to find terrestrial planets.. Views same group of stars continuously It works!
Where to get more info? Future missions Summary of results How you can participate NASA Planet Quest