A search for K I in absorption in Comet Giacobini-Zinner

Details A search for K I in absorption in Comet Giacobini-Zinner A search for K I in absorption in Comet Giacobini-Zinner

Apr 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pasp..101..431s&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 101, April 1989, p. 431-433.

Astronomy and Astrophysics

Astronomy

3

Absorption Spectra, Comet Nuclei, Comet Tails, Giacobini-Zinner Comet, Abundance, Alkali Metals, Vapor Phases, Comets, Giacobini-Zinner, Absorption, Spectra, Comet Nuclei, Distance, Abundance, Sodium, Potassium, Earth-Based Observations, Ccd Methods, Astronomy, Spectroscopy

Scientific paper

Spectra through the coma of P/Giacobini-Zinner toward the star SAO 035030 have been obtained during a close apulse. K I is searched for, and a 3-sigma upper limit of 3 x 10 to the 10th/cu cm at a distance of about 1500 km from the nucleus is found. This corresponds to a column abundance for Na I of less than 2 x 10 to the 11th/sq cm, assuming a solar abundance ratio for Na/K. The observations are not yet sufficiently sensitive to constrain either Na or K abundances, but a case is made from these data that such observations are feasible for the brighter periodic comets.

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