Transcript PPT slide - Solar Physics Group

Stars that look
brighter to us
on Earth
-10
-5
Stars that look
dimmer to us
on Earth
0
5
10
Apparent Magnitude
15
How bright a star appears to us depends on how far away it is –
so brighter stars aren’t necessarily more luminous!
Stars that are
more luminous
-10
-5
Stars that are
less luminous
0
5
10
Absolute Magnitude
15
Sun’s magnitude at various distances:
Abs. Mag.: +4.5
Distance: .0000048 pc
App. Mag.: -26.5
Abs. Mag.: +4.5
Distance: 10 pc
App. Mag.: +4.5
Abs. Mag.: +4.5
Distance: 30 pc
App. Mag.: +6.9
0
10
20
Distance from Earth (pc)
30
40