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TYC 1571-1853-1


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New periodic variables from the Hipparcos epoch photometry
Two selection statistics are used to extract new candidate periodicvariables from the epoch photometry of the Hipparcos catalogue. Theprimary selection criterion is a signal-to-noise ratio. The dependenceof this statistic on the number of observations is calibrated usingabout 30000 randomly permuted Hipparcos data sets. A significance levelof 0.1 per cent is used to extract a first batch of candidate variables.The second criterion requires that the optimal frequency be unaffectedif the data are de-trended by low-order polynomials. We find 2675 newcandidate periodic variables, of which the majority (2082) are from theHipparcos`unsolved' variables. Potential problems with theinterpretation of the data (e.g. aliasing) are discussed.

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Observation and Astrometry data

Constellation:Hercule
Right ascension:18h12m57.63s
Declination:+17°02'38.4"
Apparent magnitude:9.063
Proper motion RA:-1.6
Proper motion Dec:1.8
B-T magnitude:9.485
V-T magnitude:9.098

Catalogs and designations:
Proper Names
TYCHO-2 2000TYC 1571-1853-1
USNO-A2.0USNO-A2 1050-09948086
HIPHIP 89267

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