Binary Stars in the Yahoo! Directory

Eclipsing Binary Stars
Includes articles, code examples, and links to catalogs.
www.physics.sfasu.edu/astro/binstar.html
Astronomical League Double Star Club
Introducing observers to 100 of the finest double and multiple stars in the heavens.
www.astroleague.org/al/obsclubs/dblstar/dblstar1.html
Formation of Common-Envelope, Pre-Main-Sequence Binary Stars
Looks at the classical fission hypothesis, the problems in promoting it, and its revival.
www.phys.lsu.edu/astro/nap98/bf.final.html
Orbits of 150 Visual Binaries
Catalog.
www.dibonsmith.com/orbits.htm
Astronomy 201: Binary Stars
Introduction to the system consisting of two stars which orbit around a common point.
astrosun.tn.cornell.edu/courses/astro201/binstar.htm
Astronomy Picture of the Day: Binary Stars
Collection of images.
antwrp.gsfc.nasa.gov/apod/binary_stars.html
Ask a High-Energy Astronomer: Binary Star Systems
Questions and answers from NASA's Imagine the Universe!
imagine.gsfc.nasa.gov/docs/ask_astro/binary.html
Astrometry & Dynamics: Double & Multiple Stars Royal Observatory of Belgium
Provides basic information on double stars, on new observational techniques used to study them, and shows results obtained by the recent HIPPARCOS space mission.
www.astro.oma.be/D2/DSTARS

Binary Stars