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The 78th Name-List of Variable Stars
We present the next regular Name-List of variable stars containinginformation on 1706 variable stars recently designated in the system ofthe General Catalogue of Variable Stars.
| New Elements for 80 Eclipsing Binaries
This research presents new elements for 80 eclipsing binaries found withthe help of the ASAS-3, Hipparcos and TASS databases.
| 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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Osservazione e dati astrometrici
| Costellazione: | Sagittario |
| Ascensione retta: | 19h55m17.74s |
| Declinazione: | -44°00'38.9" |
| Magnitudine apparente: | 8.516 |
| Distanza: | 346.021 parsec |
| Moto proprio RA: | 9.4 |
| Moto proprio Dec: | -38.3 |
| B-T magnitude: | 9.117 |
| V-T magnitude: | 8.566 |
Cataloghi e designazioni:
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