Contenidos
Imágenes
Subir su imagen
DSS Images Other Images
Artículos relacionados
Multiperiodicities from the Hipparcos epoch photometry and possible pulsation in early A-type stars
A selection criterion based on the relative strength of the largestpeaks in the amplitude spectra, and an information criterion are used incombination to search for multiperiodicities in Hipparcos epochphotometry. The method is applied to all stars which have beenclassified as variable in the Hipparcos catalogue: periodic, unsolvedand microvariables. Results are assessed critically: although there aremany problems arising from aliasing, there are also a number ofinteresting frequency combinations which deserve further investigation.One such result is the possible occurrence of multiple periods of theorder of a day in a few early A-type stars. The Hipparcos catalogue alsocontains a number of these stars with single periodicities: such starswith no obvious variability classifications are listed, and informationabout their properties (e.g., radial velocity variations) discussed.These stars may constitute a new class of pulsators.
|
Enviar un nuevo artículo
Enlaces relacionados
- - No se han encontrado enlaces -
En viar un nuevo enlace
Miembro de los siguientes grupos:
|
Datos observacionales y astrométricos
| Constelación: | Centauro |
| Ascensión Recta: | 14h23m25.58s |
| Declinación: | -41°40'26.1" |
| Magnitud Aparente: | 8.46 |
| Distancia: | 287.356 parsecs |
| Movimiento Propio en Ascensión Recta: | -8.6 |
| Movimiento Propio en Declinación: | -9.1 |
| B-T magnitude: | 9.994 |
| V-T magnitude: | 8.587 |
Catálogos y designaciones:
|
