Photoelectric rotational velocities of late-type dwarfs

Details Photoelectric rotational velocities of late-type dwarfs Photoelectric rotational velocities of late-type dwarfs

Sep 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984a%26a...138..183b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 138, no. 1, Sept. 1984, p. 183-188. Research supported by the Swiss National S

Astronomy and Astrophysics

Astrophysics

120

Dwarf Stars, Late Stars, Stellar Rotation, Stellar Spectrophotometry, Cross Correlation, Electrophotometry, F Stars, Photoelectricity, Signal To Noise Ratios, Stellar Magnetic Fields, Stellar Oscillations, Stellar Spectra

Scientific paper

The photoelectric determination of rotational velocities by means of the correlation technique yields accurate ve sin i values for F to M dwarfs, even for slow rotators, down to 2 km s-1. The root mean square dispersion between other existing accurate determinations and CORAVEL rotational velocities is about 1 km s-1. An additional line-broadening mechanism exists with increasing equatorial velocity and spectral type. This line broadening probably results from an increase of turbulence and/or magnetic field. CORAVEL rotational velocities are given for 95 stars.

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