The Doppler Effect; The Sun and Stellar Structures; The Brightness of Stars Flashcards
1
Q
Doppler Effect
A
When something which is giving off light moves towards or away from you, the wavelength of the emitted light is changed or shifted
2
Q
Redshift
A
When the source of light is moving away from the observer the wavelength of the emitted light will appear to increase.
3
Q
Blueshift
A
When the source of light is moving towards the observer the wavelength of the emitted light will appear to decrease
4
Q
apparent magnitude
A
How bright the object appears to us on Earth.
5
Q
absolute magnitude
A
How bright a star actually is, its intrinsic brightness or luminosity
6
Q
m = M
A
the star is located exactly 10 pc away
7
Q
m < M
A
closer than 10 pc
8
Q
m > M
A
farther than 10pc
