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Accurate and Deep Wide Field Photometry: The Stellar Perspective

Published online by Cambridge University Press:  23 May 2007

N. Epchtein ,
M. Candidi ,
G. Bono ,
S. Pedicelli ,
I. Ferraro ,
P.B. Stetson ,
C.E. Corsi ,
L. Pulone ,
A. Calamida  and
M. Monelli
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G. Bono
Affiliation:
INAF – Osservatorio Astronomico di Roma, via di Frascati 33, 00040 Monte Porzio Catone, Italy European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
S. Pedicelli
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany Università di Roma Tor Vergata, via della Ricer ca Scientifica 1, 00133 Rome, Italy
I. Ferraro
Affiliation:
INAF – Osservatorio Astronomico di Roma, via di Frascati 33, 00040 Monte Porzio Catone, Italy
P.B. Stetson
Affiliation:
Dominion Astrophysical Observatory, Herzberg Institute of Astrophysics, National Research Council, 5071 West Saanich Road, Victoria, BC V9E 2E7, Canada
C.E. Corsi
Affiliation:
INAF – Osservatorio Astronomico di Roma, via di Frascati 33, 00040 Monte Porzio Catone, Italy
L. Pulone
Affiliation:
INAF – Osservatorio Astronomico di Roma, via di Frascati 33, 00040 Monte Porzio Catone, Italy
A. Calamida
Affiliation:
INAF – Osservatorio Astronomico di Roma, via di Frascati 33, 00040 Monte Porzio Catone, Italy
M. Monelli
Affiliation:
IAC – Instituto de Astrofisica de Canarias, Calle via Lactea, 38200 La Laguna, Tenerife, Spain
R. Buonanno
Affiliation:
Università di Roma Tor Vergata, via della Ricer ca Scientifica 1, 00133 Rome, Italy
M. Chadid
Affiliation:
University of Nice Sophia-Antipolis, Parc Valrose, 06108 Nice Cedex 02, France
G. Iannicola
Affiliation:
INAF – Osservatorio Astronomico di Roma, via di Frascati 33, 00040 Monte Porzio Catone, Italy
A. Piersimoni
Affiliation:
INAF – Osservatorio Astronomico di Collurania, via M. Maggini, 64100 Teramo, Italy
F. Primas
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
M. Romaniello
Affiliation:
European Southern Observatory, Karl-Schwarzschild-Strasse 2, 85748 Garching bei München, Germany
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Abstract

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.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 25: 1st ARENA Conference on "Large Astronomical Infrastructures at CONCORDIA, prospects and constraints for Antarctic Optical/IR Astronomy" , 2007 , pp. 125 - 135
Copyright
© EAS, EDP Sciences, 2007

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