Global acoustic oscillations on Alpha Bootis

Bibcode
1990ApJ...358..595B
DOI
10.1086/169012
Belmonte, Juan A.; Jones, Andrew R.; Palle, Pere L.; Roca-Cortés, T.
Referencia bibliográfica

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 358, Aug. 1, 1990, p. 595-609. Research supported by DGICYT.

Fecha de publicación:
8
1990
Revista
Astrophysical Journal
Número de autores
4
Número de autores del IAC
4
Número de citas
37
Número de citas referidas
27
Descripción
A two-week time series of precise radial velocity measurements of Alpha Bootis (Arcturus) covering 7-8 hr per night is reported. The radial barycentric velocity of the star is found to be -5021 + or - 5 m/s. When data from the whole run are jointly analyzed, several equispaced peaks in the frequency appear in the range of a few microhertz, the highest amplitude being some 60 m/s at 4.3 microhertz. The most probable frequency spacing seems to be 50 microhertz, while the frequency cutoff is around 80 microhertz.
Tipo
Con árbitro
Estrellas gigantes
Velocidad radial
Oscilaciones estelares

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