Computer Science – Performance
Scientific paper
Jun 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985pasp...97..519s&link_type=abstract
Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 97, June 1985, p. 519-529. Research supported by the Un
Computer Science
Performance
6
Image Tubes, Radial Velocity, Spectrographs, Telescopes, Accuracy, Metallic Stars, Reference Stars, Stellar Spectra, Time Dependence, Wavelengths
Scientific paper
An analysis of the radial-velocity performance of the 120 Å mm-1 configuration of the image-tube spectrograph on the CTIO/Yale 1-meter telescope is presented. The instrument is found to be stable within a given run but to be susceptible to small changes from run to run. There may be systematic changes in velocity residual with declination; none are found with zenith angle or hour angle. A typical precision of ±10 km sec-1 for a single spectrum of a Population I star is achieved for the spectrograph configuration used. Rest wavelengths derived for F0 - K4 Population I stars observed with this spectrograph/image-tube configuration are presented. A table of radial velocities and residuals for IAU radial-velocity standard stars, as well as some other bright stars, is also presented.
Hesser James Edward
Meyer J. E.
Shawl Stephen J.
van Heteren J.
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