EAS Publications Series
Volume 25, 20071st ARENA Conference on "Large Astronomical Infrastructures at CONCORDIA, prospects and constraints for Antarctic Optical/IR Astronomy"
|Page(s)||125 - 135|
|Published online||23 May 2007|
N. Epchtein and M. Candidi (eds)
EAS Publications Series, 25 (2007) 125-135
Accurate and Deep Wide Field Photometry: The Stellar Perspective
INAF – Osservatorio Astronomico di Roma,
via di Frascati 33, 00040 Monte Porzio Catone, Italy
2 European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
3 Università di Roma Tor Vergata, via della Ricer ca Scientifica 1, 00133 Rome, Italy
4 Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
5 IAC – Instituto de Astrofisica de Canarias, Calle via Lactea, 38200 La Laguna, Tenerife, Spain
6 University of Nice Sophia-Antipolis, Parc Valrose, 06108 Nice Cedex 02, France
7 INAF – Osservatorio Astronomico di Collurania, via M. Maggini, 64100 Teramo, Italy
We discuss how a wide field imager with very high spatial resolution on a relatively small telescope–but located in an observing site with very good seeing–might constrain the fraction of binary stars in Galactic globular clusters. We also mention the role that the new data might play in investigating advanced evolutionary phases of low-mass stars. Moreover, we discuss the role that an Extremely Large Telescope might have on the longstanding problem of cosmic distances and stellar populations. In particular, we discuss the impact that the detection of Cepheids in galaxies at the distance of the Coma cluster and of RR Lyrae stars in galaxies at the distance of the Virgo cluster might have on the calibration of secondary distance indicators.
© EAS, EDP Sciences, 2007
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