12. The Milky Way and Other Galaxies

Last: 11. Origin of the Elements Next: 13. The Realm of the Nebulae

Topics:

Reading:

    Ch. 11-1The Mikly Way is only one among billions of galaxies
    Ch. 11-2Studies of Cepheid variable stars led to the discovery of the distances to other galaxies
    Ch. 11-3Discovering the universe helps us understand our place in it
    Ch. 11THE STRUCTURE OF OUR MILKY WAY GALAXY (p. 230)
    Ch. 11-4Interstellar dust hides the true extent of the Milky Way
    Ch. 11-5Radio observations help map the galactic disk
    Ch. 11-6The galaxy is rotating
    Ch. 11MYSTERIES AT THE GALACTIC FRINGES AND NUCLEUS (p. 236)
    Ch. 11-7Most of the matter in the Galaxy has not yet been identified
    Ch. 11-8The galactic nucleus is also still poorly understood
    Ch. 11TYPES OF GALAXIES (p. 239)
    Ch. 11-9The winding of a spiral galaxy's arms is correlated to the size of its nuclear bulge
    Ch. 11-10Self-propagating star formation and spiral density waves produce spiral arms
    Ch. 11-11Bars of stars run through the nuclear bulges of barred spiral galaxies
    Ch. 11-12Elliptical galaxies display a variety of sizes and masses
    Ch. 11-13Hubble represented galaxies with different shapes in a tuning fork diagram

Web Resources:

Homework 12: Finding Distances With Standard Candles, due 11/20.

Quiz 12: Structure of The Milky Way, given 11/15.


Joshua E. Barnes (barnes@ifa.hawaii.edu)

Last modified: November 19, 2001
http://www.ifa.hawaii.edu/~barnes/ast110/tmwaog.html