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Observations - Coggle Diagram
Observations
Measure Properties of Astronomical Objects
Overview
Different Types of Astronomical Objects to be Observed
Bulk properties
position & motion
Astrometry/proper motion and RV/redshift/line width
mass
gravity and rotation/virial theorem
size/morphology
angular size and distance/methods for unresolved star and planet and orbit
imaging
luminosity
flux and distance
temperature
effective temperature/excitation and ionization
age
population&single stars
environment
multiple stars and clusters&Galaxy clusters/ISM and IGM
Composition and components
atomic and molecular
extinction and reddening
structure
Magnetic field
Dark Matter
Central BH
Time variation
Stellar Evolution
Galaxies Evolution
(other changes like orbital decay)
Distances
Trigonometry
The Distance Ladder
Brightness vs. Luminosity
Standard Candles
redshift and Hubble's Law
Quantify Measurements
Noise and Errors/SNR
Good Measurement: Hige SNR
Errors are not mistakes
accuracy and precision
Systematic vs. Random Errors
Random Processes: Poisson, Gaussian
Error Propagation