Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983a%26a...122...23a&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 122, no. 1-2, June 1983, p. 23-32. Research supported by the Danish Board for
Astronomy and Astrophysics
Astrophysics
49
Radial Velocity, Standardization, Stellar Rotation, Stellar Spectrophotometry, Velocity Measurement, Calibrating, Line Spectra, Stellar Spectra
Scientific paper
Radial velocity standardization is reinvestigated, with emphasis on the previously neglected influence of stellar rotation, on the basis of 340 spectrograms of 80 reference stars of spectral types B6-M0. Attention is given to the methods presently used to examine the influence of stellar rotation on the radial velocities obtained from individual lines and for the selection of lines as free as possible from spectral type and rotation dependence. This is done on the basis of observations of 68 reference stars in the spectral type interval B6-F5, where the problem of rotation is most pronounced. In light of the accuracies achieved for stars of different rotations, a simple, rotation-independent criterion for velocity variability is defined.
Andersen Jeppe J.
Nordstrom Birgita
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