A version of the → H-R diagram displaying
stellar gravities (→ gravity,
log g) against the corresponding
→ effective temperatures (Teff).
Named after the group of astrophysicists (W.-R. Hamann, W. Schmutz,
U. Wessolowski) working at Kiel University
(Germany), who introduced the diagram in 1980s;
© 2005-2022 by M. Heydari-Malayeri