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Searching for Periodic Variables in the EROS-2 Database

Published online by Cambridge University Press:  20 April 2012

P. Dubath
Affiliation:
Observatoire astronomique de l'Université de Genève, Switzerland email: Pierre.Dubath@unige.ch ISDC Data Centre for Astrophysics, Université de Genève, Switzerland
I. Lecoeur
Affiliation:
Observatoire astronomique de l'Université de Genève, Switzerland email: Pierre.Dubath@unige.ch ISDC Data Centre for Astrophysics, Université de Genève, Switzerland
L. Rimoldini
Affiliation:
Observatoire astronomique de l'Université de Genève, Switzerland email: Pierre.Dubath@unige.ch ISDC Data Centre for Astrophysics, Université de Genève, Switzerland
M. Süveges
Affiliation:
Observatoire astronomique de l'Université de Genève, Switzerland email: Pierre.Dubath@unige.ch ISDC Data Centre for Astrophysics, Université de Genève, Switzerland
J. Blomme
Affiliation:
Instituut voor Sterrenkunde, K.U. Leuven, Belgium
M. López
Affiliation:
Centro de Astrobiologia (INTA-CSIC), Villanueva de la Canada, Spain
L. M. Sarro
Affiliation:
Dpt. de Inteligencia Artificial, UNED, Madrid, Spain
J. De Ridder
Affiliation:
Instituut voor Sterrenkunde, K.U. Leuven, Belgium
J. Cuypers
Affiliation:
Royal Observatory of Belgium, Brussels, Belgium
L. Guy
Affiliation:
Observatoire astronomique de l'Université de Genève, Switzerland email: Pierre.Dubath@unige.ch ISDC Data Centre for Astrophysics, Université de Genève, Switzerland
K. Nienartowicz
Affiliation:
Observatoire astronomique de l'Université de Genève, Switzerland email: Pierre.Dubath@unige.ch ISDC Data Centre for Astrophysics, Université de Genève, Switzerland
A. Jan
Affiliation:
Observatoire astronomique de l'Université de Genève, Switzerland email: Pierre.Dubath@unige.ch ISDC Data Centre for Astrophysics, Université de Genève, Switzerland
M. Beck
Affiliation:
Observatoire astronomique de l'Université de Genève, Switzerland email: Pierre.Dubath@unige.ch ISDC Data Centre for Astrophysics, Université de Genève, Switzerland
N. Mowlavi
Affiliation:
Observatoire astronomique de l'Université de Genève, Switzerland email: Pierre.Dubath@unige.ch ISDC Data Centre for Astrophysics, Université de Genève, Switzerland
D. Ordóñez-Blanco
Affiliation:
Observatoire astronomique de l'Université de Genève, Switzerland email: Pierre.Dubath@unige.ch ISDC Data Centre for Astrophysics, Université de Genève, Switzerland
J. B. Marquette
Affiliation:
Institut d'Astrophysique de Paris, 75014 Paris, France
J. P. Beaulieu
Affiliation:
Institut d'Astrophysique de Paris, 75014 Paris, France
P. Tisserand
Affiliation:
Research School of Astronomy & Astrophysics, Mount Stromlo Observatory, Weston ACT 2611, Australia CEA, DSM, DAPNIA, Centre dÉtudes de Saclay, 91191 Gif-sur-Yvette Cedex, France
É. Lesquoy
Affiliation:
Institut d'Astrophysique de Paris, 75014 Paris, France CEA, DSM, DAPNIA, Centre dÉtudes de Saclay, 91191 Gif-sur-Yvette Cedex, France
L. Eyer
Affiliation:
Observatoire astronomique de l'Université de Genève, Switzerland email: Pierre.Dubath@unige.ch
Corresponding
E-mail address:
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Abstract

We started a systematic search for periodic variable-star candidates in the EROS-2 database in the context of preparatory work for the Gaia satellite mission. The goal is to evaluate different classification tools and strategies, and to identify a large sample of variable candidates. In this paper we present the results of an assessment study of a three-step identification and classification process. In the study we took a sample of about 80,000 stars from one of the LMC EROS fields.

Type
Contributed Papers
Copyright
Copyright © International Astronomical Union 2012

References

Breiman, L. 2001, Machine Learning, 45 (1), 5CrossRefGoogle Scholar
Dubath, P., et al. , 2011, MNRAS, 414, 2602CrossRefGoogle Scholar
Stetson, P. B. 1996, PASP, 108, 851CrossRefGoogle Scholar
Tisserand, P., et al. , 2007, A&A, 469, 387Google Scholar
Zechmeister, M., Kürster, M. 2009, A&A, 496, 577Google Scholar
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