Molecular and low excitation emission in high mass post-main-sequence nebulae

Bibcode
1992Ap&SS.188..171P
DOI
10.1007/BF00644908
Phillips, J. P.; Williams, P. G.; Mampaso, A.; Ukita, N.
Bibliographical reference

Astrophysics and Space Science (ISSN 0004-640X), vol. 188, no. 2, Feb. 1992, p. 171-204. Research supported by DGCYT.

Advertised on:
2
1992
Number of authors
4
IAC number of authors
2
Citations
6
Refereed citations
5
Description
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.
Type
Refereed
Planetary nebulae
H I regions

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