Exploring the stellar populations of nearby and high redshift galaxies with ELTs
Date Issued
2015
Author(s)
Abstract
The high sensitivity and spatial resolution of future ELTs facilities will offer the unique opportunity to probe directly the stellar populations of the very inner regions of galaxies in the local Universe and to derive morphological and photometric information for high redshift galaxies. We present our project aimed at assessing the expected capabilities of ELTs in the study of nearby and high-redshift stellar populations. To this end, we simulated imaging observations of different stellar populations in the local Universe and in high-redhshift galaxies with the MICADO camera at the E-ELT. Detailed photometric analyses of these images were used to probe the feasibility of science cases dealing with photometry of resolved stars in crowded fields, and with surface photometry of distant galaxies. We find that the future facilities will allow us to greatly improve our knowledge of the stellar populations in galaxies, especially in the innermost and most crowded regions. Accurate photometry of turn-off stars in nuclear star clusters of intermediate age will be possible up to distances of ̃ 3 Mpc. The exquisite spacial resolution will also drive great progress in unresolved stellar populations studies, enabling the detailed measurement of structural parameters, colour profiles, and the detection of signature of star formation sub-structures in galaxies at redshifts up to z=3.
Volume
86
Issue
4
Start page
458
Issn Identifier
0037-8720
Ads BibCode
2015MmSAI..86..458G
Rights
open.access
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