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The top documents tagged [known luminosity]
Reach for the Stars SciO Reference Sheet
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Chapter 15, Galaxies G alaxies come in different size and shape. In the previous chapter, we talked about how galaxies provide an environment for the stars
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Lecture 12: Unveiling the Milky Way Astronomy 1143 – Spring 2014
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1. accretion disk - flat disk of matter spiraling down onto the surface of a star. Often from a companion star
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Class 21 : Other galaxies The distance to other galaxies Cepheid variable stars. Other methods. The velocities of galaxies Doppler shifts. Hubble’s law
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16 Galaxies Island Universes. 16 Copyright – FORS1 VLTI, European Southern Observatory
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Supernova!
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Class 21 : Other galaxies
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Units to cover: 53, 26, 27, 55, 56. The Solar Cycle The number of sunspots seen increases and decreases periodically. Every 11 years or so, the sunspot
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Announcements HW #1 will be returned on Wednesday Problem #7 – I wrote the distance incorrectly, should have been 2.2706x10 19 km. But don’t change your
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Supernova! The fate of stars with mass greater than 9 solar masses. Principally O and B stars
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Reddening and Extinction The discovery of the dust is relatively recent. In 1930 R.J. Trumpler (lived 1886--1956) plotted the angular diameter of star
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