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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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We publish 1879 radial velocities of stars distributed in 105 fields of4^{\circ} \times 4^{\circ}. We continue the PPO series \cite[(Fehrenbachet al. 1987;]{Feh87} \cite[Duflot et al. 1990, 1992 and 1995),]{Du90}using the Fehrenbach objective prism method. Table 1 only available inelectronic form at CDS via to cdsarc.u-strasbg.fr (130.79.128.5) or viahttp://cdsweb.u-strasbg.fr/Abstract.html
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Membro dei seguenti gruppi:
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Osservazione e dati astrometrici
| Costellazione: | Ofiuco |
| Ascensione retta: | 17h51m04.20s |
| Declinazione: | +08°31'51.0" |
| Magnitudine apparente: | 6.97 |
| Distanza: | 104.167 parsec |
| Moto proprio RA: | 32.6 |
| Moto proprio Dec: | 34 |
| B-T magnitude: | 7.377 |
| V-T magnitude: | 7.004 |
Cataloghi e designazioni:
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INHABITED SKY
