Sarazin's ASTR 2120 Home Page

Introduction to Astrophysics II

Spring 2019

This course provides a physics-based, mathematical introduction to the astronomy of stars, galaxies, and the Universe. Topics covered include: the observed properties of stars; stellar interiors; stellar spectra; binary stars; the Sun as a star; the life and death of stars; black holes; binary stars and X-ray sources; the interstellar medium; our Milky Way galaxy; other galaxies; clusters of galaxies; the large-scale structure of the Universe; active galaxies; the expanding universe; cosmology, the Big Bang, and the early Universe. It is intended primarily for Astronomy, Astronomy-Physics, and Physics majors.

The Center of the Whirlpool Galaxy from the Hubble Space Telescope
Whirlpool Galaxy

Class Announcements

  • As noted in the syllabus, any late homeworks must be turned in by Wednesday, May 1 in my mailbox. Late homeworks count for a maximum of 50% of their regular credit unless excused.
  • The Final Exam will be Thursday, May 2, 9 am to noon in the classroom, ASTR 265.
  • The Review Session for the Final Exam will be held on Wednesday, May 1 at 10 am - noon in ASTR 265 (the classroom).


    Graduate Teaching Assistant

    Class Handouts

    Class Lecture Notes

    The Center of the Antennae Merging Galaxies from the Hubble Space Telescope
    Antennae Galaxies


    Test #1

    Test #2



    Websites for More Information

    WMAP Image of Heat Radiation from the Early Universe
    WMAP Image

    Last modified April 17, 2019 at 16:19:16 EDT by cls7i r2120