Measuring the Evolution of the M/L Ratio from the Fundamental Plane
Author: Franx M.
Source: Astrophysics and Space Science, Volume 267, Numbers 1-4, 1999 , pp. 293-298(6)
The Fundamental plane provides a sensitive tool to measure the change in the M/L ratio of early type galaxies with redshift. The evolution of the M/L ratio is a function of the star formation history. It depends on the IMF, the formation redshift, and cosmology. Some model examples are shown, and a first result on the cluster Abell 665 at z=0.18 is given. The measurements confirm the cosmological surface brightness dimming, and imply an evolution of the (red) L/M ratio (1 + z)^1.8±0.7. More data are needed to extend this result to higher redshifts, and to test the underlying assumptions.
Document Type: Regular paper
Publication date: 1999-01-01