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Precise Radial Velocities and Radial Velocity Standards

Published online by Cambridge University Press:  04 August 2017

G. A. H. Walker ,
J. Amor ,
S. Yang  and
B. Campbell
G. A. H. Walker
Affiliation:
University of British Columbia, Vancouver
J. Amor
Affiliation:
University of British Columbia, Vancouver
S. Yang
Affiliation:
University of British Columbia, Vancouver
B. Campbell
Affiliation:
Dominion Astrophysical Observatory

Abstract

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By imposing absorption lines of HF in stellar spectra we can measure changes in r.v. with a precision of ~10m/s from a single spectrum, provided stellar line profiles are not distorted by atmospheric motions. The precision of absolute radial velocities is currently limited to ~100m/s by knowledge of rest wavelengths. Representative results are presented from our three, active PRV programs: velocity variations of δ Scuti stars; a search for unseen companions to late-type stars; and routine observations of certain IAU velocity ‘standards’.

Type
Research Article
Information
Symposium - International Astronomical Union , Volume 111: Calibration of Fundamental Stellar Quantities , 1985 , pp. 587 - 589
Copyright
Copyright © Reidel 1985 

References

Campbell, B. and Walker, G.A.H. 1979, Publ. Astron. Soc. Pacific, 91, 540.Google Scholar
Campbell, B. Walker, G.A.H., Johnson, R., Lester, T., Yang, S. and Auman, J. 1981, Proc. S. P. I. E., 290, 215.Google Scholar
Yang, S., Walker, G.A.H., Fahlman, G.G., and Campbell, B. 1982, Publ. Astron. Soc. Pacific, 94, 317.Google Scholar