New periodic variables from the Hipparcos epoch photometry
Abstract
Two selection statistics are used to extract new candidate periodic variables from the epoch photometry of the Hipparcos catalogue. The primary selection criterion is a signaltonoise ratio. The dependence of this statistic on the number of observations is calibrated using about 30000 randomly permuted Hipparcos data sets. A significance level of 0.1 per cent is used to extract a first batch of candidate variables. The second criterion requires that the optimal frequency be unaffected if the data are detrended by loworder polynomials. We find 2675 new candidate periodic variables, of which the majority (2082) are from the Hipparcos`unsolved' variables. Potential problems with the interpretation of the data (e.g. aliasing) are discussed.
 Publication:

Monthly Notices of the Royal Astronomical Society
 Pub Date:
 March 2002
 DOI:
 10.1046/j.13658711.2002.05150.x
 arXiv:
 arXiv:astroph/0112194
 Bibcode:
 2002MNRAS.331...45K
 Keywords:

 methods: data analysis;
 methods: statistical;
 stars: variables: other;
 Astrophysics
 EPrint:
 18 pages, 9 figures, accepted for publication in MNRAS