| Zugriffsnummer | 14411 |
| Dokumenttyp | Zeitschriftenartikel |
| Sprache | Englisch |
| Titel | Variable stars in the Tycho photometric observations: 1. Detection |
| Autor(in); Institution |
Piquard, S.; Observatoire astronomique de Strasbourg, Strasbourg, FRANCE
Halbwachs, J.-L.; Observatoire astronomique de Strasbourg, Strasbourg, FRANCE
Fabricius, C.; Copenhagen University Observatory, Copenhagen, DENMARK
Geckeler, Ralf D.; 4.21, Bildoptik und Spektrometrie, PTB-Braunschweig
Soubiran, C.; Observatoire astronomique de Bordeaux, Floirac, FRANCE
Wicenec, A.; ESO, Garching, GERMANY
|
| Quelle/Jahr | Astronomy and Astrophysics: 373 (2001), 576 - 588 |
| ISSN | 0004-6361 |
| Verlag | Les Ulis: EDP Sciences |
| Freie Schlagworte | Methods: statistical ; Surveys: Tycho ; Stars: variables ; Tycho catalogue |
| Zusammenfassung | We present an original way to detect variable stars in the Tycho photometric observations. A modified Kolmogorov-Smirnov statistical test has been constructed, based on a model of most of the satellite's parameters, leading to the despersion in the measurements. This allows us to build a treatment taking into account truncated detections and censored measurements, and to search for variability in the faint part of the catalogue. The selection threshold of variable stars has been calibrated to minimize false alarm rate. Reliable results were thus obtained for stars as faint as 11 mag. One thousand and ninety-one suspected varible stars have been listed, 407 of which are already known in Hipparcos, GCVS or NSV, and 684 of which are suspected variable stars to be identified soon. |
