AY 101 Study Guide - Final Guide: Dark Matter Halo, Elliptical Galaxy, Spiral Galaxy
16 Jul 2016
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Document Summary
What does our milky way galaxy look like: a halo composed of a bulge, disk and global clusters. What kind of galaxy is our milky way: spiral galaxy. What aspects of the milky way"s appearance tell us where we are in it: the star count in each direction, distribution of globular clusters. How do we tell how big the milky way is: distance to galactic objects. What are the structural components of our galaxy: disk, bulge, visible halo, dark halo, galactic center. What are the ingredients for ongoing star formation: leftover gas continues to collapse and atten (due to rotational support) over extended time, flattened distribution held up by rotation. Where is the ongoing star formation in the milky way: galactic center. How do stars & gas recycle in the milky way: ongoing star formation in gravitationally collapsing, fragmenting gas clouds, gas shoved around by supernovae and stellar winds.
