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Study of short period variables and small amplitude periodic variables

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 this goal first we collected the properties of variable stars that fit the requirements described above. Then we built a database of synthetic light-curves with short period and low amplitude variability with time sampling that follows the Gaia nominal scanning law and with noise level corresponding to the expected photometric precision of Gaia. Finally we performed period search on the synthetic light-curves to obtain period recovery statistics. This work extends our previous period recovery studies to short period variable 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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