Data mining the Sloan Digital Sky Survey (SDSS) for RR Lyrae variable stars

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INSPIRATION FOR THE DATA MINING

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.


ACCESSING THE SDSS DATA

http://www.sdss.org/dr7/access/index.html


SELECTION CONSTRAINTS AND RESULTING SQL QUERY

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

CANDIDATE VARIABLE STARS

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

Journal of Astronomical Data Mining

Common Proper Motion Pairs in UCAC3

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.