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Definition
3.85 x 1026 J/s
3.85 x 1033 erg/s |
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| Absolute Magnitude of Sun |
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Definition
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Definition
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The flow of photons through the surface of a star per unit area per unit time. (i.e., J m-2 s-1). Like brightness.
PlugNChug: F = L/A |
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| Amount of EM energy radiated by a body per unit time, but not area (hence why to find the flux you have to divide luminosity by area). |
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| Doppler Shifts ↔ Radial Velocity |
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Definition
vr/c = Δλ/λpred
(λ-λobs)/λobs = vr/c |
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| How many AU per one parsec? |
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Definition
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Term
Proper Motion
&
Tangential Velocity |
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Definition
Tangential motion usually given as µ (proper motion).
µ = {(µd cosδ)² + (µδ)²}½
vt = 4.74µd |
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Term
Kepler's Third Law
outside of the solar system |
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Definition
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| Flux, Luminosity, Temperature |
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Definition
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Definition
Magnitude is a comparison of the brightness of two stars.
m1 - m2 = 2.5log(F2/F1) |
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