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Reflections on Stellar Evolution
Installed 18 Aug 2000 - Latest revision 01 Jun 2010
Calculated and Estimated Stellar Distances versus Stellar Parallax Angles
Points plotted represent the bright stars in 22 constellations (Andromeda
Stellar Distances versus Hipparcos Parallax angles
Note that in the cases where estimated distances are removed by more than five
standard deviations from the values expected based on Hipparcos parallax data
(the yellow region), the estimates are all on the "too close" side of the "pack."
Stellar Distances versus Pre-Hipparcos Parallax Angles
For these pre-Hipparcos parallax-angle-measurements and distance-estimates
the out-lyers are distributed more or less evenly on both
sides of the five standard deviations region.
It would appear that the majority of the divergent pre-Hipparcos
distance estimates, many of which are based on considerations other
than parallax, have been replaced with calculated values based on the
Parallax and Distance data are from the
Star Data Tables by Richard Dibon-Smith.
UK Astronomers Help to Rechart the Heavens Google Newsgroups: sci.astro - 12 May 1997.