Variable Stars in M5
From the author of Welcome to the Universe in 3D
Click on image for full uncropped version
Variable stars are shown as pairs of points connected by a line-segment
Stars above the red line are presumed to be variable stars.
Variable stars between magnitude 14 and 15 are the RR-Lyrae stars.
Here are the two image files (in "fits" format):
m5_2005-LRGB.fit
m5_2006-LRGB.fit
Here is the Matlab function used to make the HR-diagram:
makeHRdiagRRlyrae.m
Click here for webpage showing individual images of M5