Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992ap%26ss.188..171p&link_type=abstract
Astrophysics and Space Science (ISSN 0004-640X), vol. 188, no. 2, Feb. 1992, p. 171-204. Research supported by DGCYT.
Astronomy and Astrophysics
Astrophysics
3
Astronomical Maps, Astronomical Spectroscopy, Emission Spectra, Light Emission, Planetary Nebulae, Carbon Monoxide, H I Regions, Hydrogen, Interstellar Gas, Line Spectra
Scientific paper
A broad range of type I post-main-sequence nebulae have been mapped and studied spectroscopically in the J = 1 - 0, J = 2 - 1, and J = 3 - 2 transitions of CO using the 12-m antenna at Kitt Peak and the 45-m facility at the Nobeyama Radio Observatory. CO J = 2 - 1 emission associated with NGC 3132 and NGC 6445 is detected; the location of CO J = 1 - 0 emission in the nucleus of NGC 6302 is determined, and CO J = 3 - 2 spectroscopy is obtained for the first time for a substantial cross section of type I sources. The nature of the emission is assessed, and its correlation with H2S(1) and optical shock indicators and the underlying processes responsible for the observed trends are discussed.
Mampaso Antonio
Phillips J. P.
Ukita Naoya
Williams Peter G.
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