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S3W2 Flipped classroom - Luminocity and magnitude of stars

Last updated 3 months ago

11 questions

1

read chapter 12.1-12.4, Much of this should be review. Do you have any questions

Required

1

Summarize the Stefan-Boltzmann law and what it is used for

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1

Define luminosity of a star

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1

Why does 0 class stars having ionized helium and hydrogen mean that the lines corresponding to helium and hydrogen are thinner than B and A class stars?

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The doppler shift help us determine if a star is moving

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You can determine how fast the star is moving by the distance of the shift in the spectrum

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What is a binary star system?

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Why do binary stars sometimes appear as one point of light?

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What determines the luminosity of a binary star system?

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1

watch science asylum guy talk about nuclear fusion. I like this guy's videos, but part of the reason I like it is that he does expose some of the hand-waving we can do sometimes when we simplify this kind of thing.
So instead of asking if you have questions about this i want you identify
1) something that you did understand pretty well.
2) something you understand is more complicated than you thought
3) something you didn't understand at all.

1

Categorize your understanding

measuring the distance of a star using triangulation and parallax
measuring the distance of a star using the standard candles method
the difference between luminocity and brightness
why the brightness of the star follows the3 inverse square law
the difference between luminosity and temperature
whats the point of the stefan-boltzmann law
how we use the spectra to find the temperature
how we use spectra to find the composition
how we use spectra to find the velocity
what is a binary star
how can you tell that a star system is binary if they are so close together you only see on smear of light?

I've got this
I'm fuzzy
so confused