Jason Shilling Kendall: Citizen Astronomer

William Paterson University
Amateur Astronomers Association of New York

Introductory Astronomy Lecture Series
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Astronomy Lesson 57: Stellar Mass, Luminosity and Lifespan

Now we get to some real meat of astrophysics. We discuss the relationship between mass, luminosity and lifespan of main sqeuence stars. It is an amazing discovery that mass is known to be tictly correlated to luminosity for M-S star. And for M-S stars, the luminosity is tightly related to spectral type. So, just get the spectrum, and you know the mass!

William Paterson University Department of Physics American Astronomical Society Amateur Astronomers Association of New York Astronomical Society of the Pacific