Rotation rates of giant stars

Details Rotation rates of giant stars Rotation rates of giant stars

Aug 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pasp..101..695g&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 101, Aug. 1989, p. 695-698. Research supported by NSERC

Astronomy and Astrophysics

Astronomy

21

Cool Stars, Giant Stars, Line Spectra, Signal To Noise Ratios, Stellar Rotation, Stellar Spectrophotometry, Fourier Analysis, Helium-Neon Lasers, Spectral Resolution

Scientific paper

The rotation rates and macroturbulence dispersion of 14 G and K giants were measured using Fourier reduction of spectral-line profiles. The high-spectral-resolution, high-signal-to-noise observations were taken with the Coude Echelle Spectrometer of the European Southern Observatory. Good agreement was found between the present results and previous investigations, showing that no large systematic differences are introduced by using different spectrographs and detectors. The results generally confirm the low rotation seen for cool giants.

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