The zero-point of the 'Fick' radial-velocity stars

Details The zero-point of the 'Fick' radial-velocity stars The zero-point of the 'Fick' radial-velocity stars

Jan 1985

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97...78n&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, Jan. 1985, p. 78-84. Research supported by the Univ

Astronomy and Astrophysics

Astronomy

2

Orbital Elements, Radial Velocity, Stellar Spectra, Velocity Measurement, Error Analysis, Spectrographs, Stellar Rotation

Scientific paper

The radial velocities determined for 61 stars by Beavers et al. (1979) using the spectrometer developed at Fick Observatory are compared with those derived from observations obtained using the coude-feed spectrograph at KPNO over the spectral range from F8 through K4 during 1978-1981. The stellar effective wavelengths used in analyzing the KPNO observations are established using observations of solar-system objects. The data are presented in tables, and the difference between the Fick and KPNO radial velocities is found to be 0.0 + or - 0.1 km/s, compared to 0.4 + or - 0.5 km/s for a group of IAU standard objects also checked at KPNO. These low differences confirm the accuracy of the Fick and IAU zero points.

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