|Annu. Rev. Astron. Astrophys. 1989. 27:
Copyright © 1989 by . All rights reserved
4.1 Main Sequence Fitting
So far, main sequence fitting for 15-Gyr-old clusters is only possible for the MWG and the Magellanic Clouds. In the latter case, only recently has it become possible to measure the main sequences of such clusters to as faint as two magnitudes or so below the turnoff. For the nearest dwarf elliptical galaxies, main sequence fitting is possible for the system as a whole.