TA: Amy Lo

Office Hours: Monday & Friday 1-2 pm

Office Location: 8135A, 8th floor, Math Sciences

Office Phone: 825-2925

E-mail: amy@astro.ucla.edu

Web site: www.astro.ucla.edu/~amy/intro.html

General Rules

Section does NOT count for grade

I am here as a resource for YOU

Sections will go over material covered during lecture, additional interesting supplements

There will be additional review sections and office hours before exams

Grades and solutions will be posted on the web, as well as general announcements; check often.

Lecture #1

Hertzsprung-Russell Diagram

Factor governing stellar evolution: a star's mass

H-R diagram gives you information about the stellar cluster, e.g. age, metallicity, etc.

Stellar Classification

Spectral class:OBAFGKM (oh be a fine guy kiss me)

Luminosity classes: I, II, III, IV, V (bright to dim)

Stellar Spectrum

Lecture #2

Stellar Remnants

White dwarf -- small and stable

Neutron star -- very small and may explode

Black hole -- singularity

Main sequence stars supported by pressure, and held together by gravity

Pressure: moving molecules exert forces against anything pressing on them