Extrasolar Planets. Some prehistory. Absence of evidence clearly was not evidence of absence – planets dim and situated next to brilliant stars Laplace and Kant ideas had vastly different implications (Don’t fixate yet on possible habitats!). History.
Doppler shift Brightness
Vidal-Madjar et al. 2004
We see H,C,O,Na… on the way out (it’s hot)
TrES-1, Charbonneau et al. AstrophysJ 2005
Do this at multiple wavelengths and get a crude planetary spectrum
HD 209458, Deming et al. Nature 2004
a PsA = Fomalhaut
Udalski et al., OGLE+MOA teams, June 2005. Note need for rapid response!
Just like the name says
One element or many? Yes…
Interferometer of free-flying 3m telescopes (2015?)
Identify and characterize nearby terrestrial worlds.
How many ways can giant planets form?
ESO VLT HST