Astronomy and Astrophysics – Astronomy
Scientific paper
Apr 1982
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982ncgb.conf..155d&link_type=abstract
IN: Workshop on the Need for Coordinated Ground-Based Observations of Halley's Comet, Paris, France, April 29, 30, 1982, Proceed
Astronomy and Astrophysics
Astronomy
Abundance, Carbon Isotopes, Comets, Acetylene, Carbon 12, Carbon 13, Kohoutek Comet, Line Spectra, West Comet
Scientific paper
Most of the comet isotope ratios presently discussed pose mass separation problems, so that information concerning them will only be obtainable from ground-based observations or satellite UV spectrographs. It is noted that ground support of the Giotto astronomical satellite is essential in order to fully capture the interrelated UV, visible, and IR emissions of the molecules of interest. As many independent isotopic abundance measurements as possible should be used, in order to increase credibility and ensure the absence of fractionation effects. The required spectral resolutions of about 100,000 are obtainable with both the ESO's CoudeEchelle Spectrograph at La Silla and the Tull scanner at the McDonald observatory.
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