Molecular hydrogen observations of southern planetary nebulae
Open Access
- 1 February 1984
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 206 (3) , 521-527
- https://doi.org/10.1093/mnras/206.3.521
Abstract
Molecular hydrogen emission at 2 µm has been detected in five out of fifteen planetary nebulae surveyed. Each of the sources detected is spatially extended, and presents a new opportunity to study the distribution of shocked molecular gas. A map of the nebula NGC 3132 in the S(1) line of H2 shows that the emission is in the form of a shell just outside the brightest optical regions. IC 4406 has been mapped in both H2 and Brackett γ, and appears to consist of a cylinder of hot molecular gas surrounding the ionized material.Keywords
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