Evolution of Elliptical Galaxies up to z=1

Details Evolution of Elliptical Galaxies up to z=1 Evolution of Elliptical Galaxies up to z=1

1996-08-13

arxiv.org/abs/astro-ph/9608081v1

Astronomy and Astrophysics

Astrophysics

Latex, 8 pages, 2 Postscript figures and lamuphys.sty included, to appear in proceedings of ESO workshop "The Early Universe w

Scientific paper

We review the observational evidence showing that luminous cluster elliptical galaxies are old stellar systems, undergoing mostly passive stellar evolution up to redshift $z\approx 1$, with approximate coeval epoch of formation. This scenario is supported by observations of local early--types, collected by 2m -- 4m class telescopes, and fits the recently gained high resolution imaging (given by the refurbished HST) and deep spectroscopic data coming from 4m telescopes of $z\approx 0.4$ cluster ellipticals. Up to $z\approx 1$, luminosity functions, colors and surface brightnesses provide further evidence for mild evolution of massive cluster ellipticals. The new 8m class telescopes and in particular the VLT with its imaging and multiplex spectroscopic instruments will give further essential information on early--type galaxy evolution over the full galaxy mass--spectrum and as a function of environment, disk--to--bulge ratio and other parameters. The VLT will also allow to explore the possibility to use evolution--calibrated massive ellipticals as cosmological standard candles/rods.

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