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All right.
00:01
So here i've drawn a very rough version of an hr diagram where you have temperature increasing along the top right axis.
00:10
Spectral class, which isn't super important for these questions.
00:14
Absolute magnitude, which goes from negative up at top to positive down below.
00:21
And then you finally have luminosity on the other side.
00:27
So the first question is, our most bright stars so are the most bright stars near the main sequence and the answer is no so high luminosity corresponds to high brightness and then absolute magnitude is kind of another version of brightness so absolute magnitude is kind of like so this is brightness at a standard distance and this is energy emitted.
01:30
So as you get higher in luminosity, you're emitting more and more energy.
01:35
So these stars, so we call these super giants.
01:42
And these emit a massive amount of energy compared to the giants, which emit very large amounts of energy.
01:53
And then we have over here, this is the main sequence.
01:58
And this is kind of our standard where we have lower magnitude stars...