Acoustic oscillations in the K2 III star Arcturus

Details Acoustic oscillations in the K2 III star Arcturus Acoustic oscillations in the K2 III star Arcturus

Jul 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.169...77b&link_type=abstract

(IAU, European Regional Astronomy Meeting on New Windows to the Universe, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics a

Astronomy and Astrophysics

Astrophysics

7

K Stars, Red Giant Stars, Stellar Luminosity, Stellar Oscillations, Stellar Spectrophotometry, Acoustic Measurement, Light Curve, Radial Velocity, Stellar Spectra, Stellar Structure

Scientific paper

Simultaneous spectrometric and photometric observations have been performed on the red giant star Arcturus, in a search for radial velocity or luminosity variations related to global oscillations of the stellar structure. From a preliminary analysis of the spectrometric data, several frequencies have been discovered in the range from 1 to 50 micro-Hz, the highest amplitude being 60 m/s at 4.3 micro-Hz.

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