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Study of short period variables and small amplitude periodicvariables

Published online by Cambridge University Press:  15 February 2011

C. Turon ,
F. Meynadier ,
F. Arenou ,
M. Varadi ,
L. Eyer ,
S. Jordan  and
D. Koester
M. Varadi
Affiliation:
Geneva Observatory, University of Geneva, Ch. des Maillettes 51, 1290 Sauverny, Switzerland
L. Eyer
Affiliation:
Geneva Observatory, University of Geneva, Ch. des Maillettes 51, 1290 Sauverny, Switzerland
S. Jordan
Affiliation:
ARI/ZAH, Univ. of Heidelberg, Mönchhofstr. 12-14, 69120 Heidelberg, Germany
D. Koester
Affiliation:
Institut für Theoretische Physik und Astrophysik, University of Kiel, Leibnizstraße 15, 24098 Kiel, Germany
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Abstract

Our goal is to assess Gaia’s performance on the period recovery of short period(p < 2 hours) and small amplitude variability. To reach thisgoal first we collected the properties of variable stars that fit the requirementsdescribed above. Then we built a database of synthetic light-curves with short period andlow amplitude variability with time sampling that follows the Gaia nominal scanning lawand with noise level corresponding to the expected photometric precision of Gaia. Finallywe performed period search on the synthetic light-curves to obtain period recoverystatistics. This work extends our previous period recovery studies to short periodvariable stars which have non-stationary Fourier spectra.

Type
Research Article
Information
European Astronomical Society Publications Series , Volume 45: GAIA: At the Frontiers of Astrometry , 2010 , pp. 167 - 172
Copyright
© EAS, EDP Sciences 2011

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