Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1999
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999ap%26ss.267..293f&link_type=abstract
Astrophysics and Space Science, v. 267, Issue 1/4, p. 293-298 (1999).
Astronomy and Astrophysics
Astrophysics
Scientific paper
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.
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