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RR Lyrae stars are pulsating white giants, usually of spectral class A and have a period from 0.2 to1 days and a typical variation of 0.3 to 2 magnitudes. More information can be found here.
The article used as the basis of this investigation - "Exploring the Variable Sky with the Sloan Digital Sky Survey" - can be accessed here.
http://www.sdss.org/dr7/access/index.html
0.98 < (u-g) > 1.30 | |
-0.15 < (r-i) > 0.22 | |
-0.21 < (i-z) > 0.25 | |
-0.05 < (u-g) + 0.67(g-r) -1.07 > 0.35 | |
0.06 < 0.45(u-g) - (g-r) - 0.12 > 0.55 |
Full details of the candidates can be downloaded from here.
Astronomical Outliers - free, gratis and for nothing | The International
Decadal Survey of Amateur Astronomy and Astrophysics (Professional-amateur collaborations in astronomy and astrophysics) |
Variable star targets - free, gratis and for nothing | ||
My favourite images | Stellar Twins | Astronomical Data
Mining RR Lyrae Red Dwarfs |
Martin Nicholson - Daventry, United Kingdom.
This page was last updated on July 1st 2010.