Color-Magnitude Diagram (CMD) of Globular Cluster M5 (original) (raw)
[ ![[M5 CMD (Fig 4)]](http://messier.seds.org/Pics/Leos/M5f4sm.jpg)
](../../Pics/Leos/M5fig4.gif)
Plotting a relation between visual magnitude (V) and color index (B-V) for individual stars of the cluster M 5, one obtains this picture of an old, distorted apple-tree with only two branches. It is, nevertheless, the Tree of Knowledge for astrophysicists.
(A): Main Sequence.
(B): Red Giant Branch.
(C): Helium flash occurs here
(D): Horizontal Branch (HB)
(E): Schwarzschild space in the HB
(F): White Dwarfs (below the arrow).
By Leos Ondra
Hartmut Frommert
Christine Kronberg
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Last Modification: February 10, 1998