Variable Stars
Links
A Ritzian Interpretation of Variable Stars
http://www.ebicom.net/~rsf1/binaries.htm
A study on the nature of the speed of light in space using light curves and spectroscopic observations of variable stars as evidence.
American Association of Variable Star Observers
The largest organization for variable stars: provides professional and amateur collaboration, research, and analysis of variable star observations.
Astronomical Society of South Australia
http://www.assa.org.au/sig/variables/
ASSA's variable star group. News, FAQ, charts, and software.
Astronomy On-Line
http://www.eso.org/outreach/spec-prog/aol/market/collaboration/varstar/
Collaborative Project aimed at getting new people involved in variable star observing.
Brigham Young University Variable Star Database
http://astro2.byu.edu/~vardat/
Currently contains 311 stars which have been classified as Delta Scutis or Gamma Doradus in some published source.
Free Virtual Galaxy Project
By Jim Smith's. Purpose is to provide a zero cost, interactive 3D virtual reality system.
General Catalog of Variable Stars Research Group
http://www.sai.msu.su/groups/cluster/gcvs/
Research group working on the GCVS, Sternberg Astronomical Institute, Moscow, Russia. Includes catalogs and publications.
Information Bulletin on Variable Stars
http://www.konkoly.hu/IBVS/IBVS.html
The IBVS is a bulletin of Commissions 27 and 42 of the International Astronomical Union, published by Konkoly Observatory, Budapest, Hungary.
Skyandtelescope.com - Variable Stars
http://SkyandTelescope.com/observing/objects/variablestars/
Observing variable stars.
The Cepheid Distance Scale: A History
http://institute-of-brilliant-failures.com/index.htm
A critical review of the Cepheid distance scale, from its inception, to the Hipparcos mission and beyond.

