The pulsating λ Bootis star HD 105759
- Autor(en)
- Peter Martinez, Chris Koen, Gerald Handler, Ernst Paunzen
- Abstrakt
We present spectroscopic and multisite time series photometric observations of the star HD 105759 which confirm that this is a new pulsating ? Bootis star. Our spectroscopy indicates an overall metallicity of [Z] = log Z - log Z? = -1 and that Teff = 8000 ‘ 300 K and log g = 4.0 ‘ 0.2. The photometric data reveal that this star pulsates with at least five frequencies: 8.62, 12.69, 20.15, 21.27 and 23.66 d-1. These frequencies do not all match those found in an earlier single-site study, indicating that the pulsation spectrum changes with time.
- Organisation(en)
- Institut für Astrophysik
- Externe Organisation(en)
- South African Astronomical Observatory (SAAO), Cerro Tololo InterAmerican Observatory (CTIO)
- Journal
- Monthly Notices of the Royal Astronomical Society
- Band
- 301
- Seiten
- 1099-1103
- Anzahl der Seiten
- 5
- ISSN
- 0035-8711
- DOI
- https://doi.org/10.1046/j.1365-8711.1998.02070.x
- Publikationsdatum
- 1998
- Peer-reviewed
- Ja
- ÖFOS 2012
- 103003 Astronomie
- Link zum Portal
- https://ucrisportal.univie.ac.at/de/publications/1cf27556-781c-4892-9536-a9de0f60afca