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HD 14684


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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.

Mesures de vitesses radiales. VII. Accompagnement AU sol DU programme d'observation DU satellite Hipparcos. Radial velocities. VII. Ground based measurements for Hipparcos.
We publish 734 radial velocities of stars distributed in 28 fields of4x4deg. We continue the PPO series (Fehrenbach et al. 1987; Duflot etal. 1990 and 1992), using the Fehrenbach objective prism method.

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Gözlemler ve gökölçümü verileri

Takýmyýldýz:Zincirli Prenses
Sað Açýklýk:02h23m49.41s
Yükselim:+50°54'09.1"
Görünürdeki Parlaklýk:8.681
Uzaklýk:352.113 parsek
özdevim Sað Açýklýk:8
özdevim Yükselim:-1
B-T magnitude:8.652
V-T magnitude:8.679

Kataloglar ve belirtme:
Özgün isimleri   (Edit)
HD 1989HD 14684
TYCHO-2 2000TYC 3306-1430-1
USNO-A2.0USNO-A2 1350-02279969
HIPHIP 11171

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