The observability of carbon monoxide in planetary nebulae

Details The observability of carbon monoxide in planetary nebulae The observability of carbon monoxide in planetary nebulae

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phdt.........3k&link_type=abstract

Thesis Tuebingen Univ. (Germany, F.R.). Inst. für Astronomie.

Astronomy and Astrophysics

Astronomy

Astronomical Spectroscopy, Carbon Monoxide, Line Spectra, Planetary Nebulae, Astronomical Models, Computer Programs, Red Giant Stars, Thermal Radiation, White Dwarf Stars

Scientific paper

Measurements on the planetary nebula NGC 7027 were reevaluated, and the observability of CO was investigated. The evolution from red giant to white dwarf star is outlined. Previous molecular investigations in circumstellar envelopes are summarized, with emphasis on the results obtained for NGC 7027. The CO-density, synthesis reactions and decay reactions, as well as the decay of CO by photodissociation are reviewed. Density profiles of CO were calculated using the program MODEL 1; the envelope masses were calculated using the program MODEL 2.

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