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Lecture 5 Review: Observations - Coggle Diagram
Lecture 5 Review: Observations
Direct Measurement
Position(RA and DEC)
Known stars
Transform from x-y in palte to RA-DEC
Distance
Trigonometry
Anchors
Measured brightness and infered lunimosity from periods
Distance ladder
Motion
Radial velocity/Rotation: red/bule shift
Trangential velocity: angle change
Indirect Measurement
Temperature
Effective termperature
Ionization temperature
Color temperature
Mass
Gravity
Keppler's third law
Virial theorem
Size
Infer from flux and blackbody radiation
Use planet transits
Age
Composition
Elements
Spectrum analysis
Magnetic filed
Dark matter
Central blackhole
Statistics
Mesurement
Poisson process
Maximum likelihood estimation
Errors
SNR