Evolution of distant galaxies from cluster photometry: a program for a 50-m ELT

• The formation, shaping and evolution of galaxies are processes of high interest but poorly known. This is true also for our closest galactic neighbours. Of key importance is a representative sample of all major types of galaxies with solid evolutionary parameters. Stellar clusters are excellent probes of galactic evolution, albeit so far useful at smaller distances only, mainly due to the limiting effects of image crowding. With extremely large telescopes (ELTs) with full adaptive optics (AO) and near diffraction limited performance, the effects of image crowding will be drastically reduced. Thus, the excellence of clusters of stars as evolutionary probes can be extended out to cosmological distances. We have studied this extension. With data on the Str

Ämnesord

NATURVETENSKAP  -- Fysik -- Astronomi, astrofysik och kosmologi (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences -- Astronomy, Astrophysics and Cosmology (hsv//eng)

Nyckelord

galaxy evolution

galaxy formation

galaxy shaping

stellar clusters

extremely large telescopes

adaptive optics

image crowding

cluster photometry

star clusters

evolutionary probes

cosmology

Stromgren uvby system

open test cluster

galactic background field

colour-magnitude diagrams

1 to 500 Mpc

50 m

Sun

evolutionary parameters

age parameter

integral colour

luminosity functions

turn-off point determination

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