Molecular Hydrogen Emission from the Photodissociation Region of Hubble 12

Access & Terms of Use
metadata only access
Abstract
Infrared spectra of molecular hydrogen (H2) line emission, from the photodissociation region in the planetary nebula Hubble 12, are presented. The spectra range between 0.7 and 2.5 microns. Approximately 75 H2 lines were measured with over 100 lines actually detected. The ortho/para ratio for H2 was measured and it is shown that there is a decreasing trend in this ratio with energy level. This is qualitatively interpreted as the radiative excitation of 'fresh' molecules from the molecular cloud by a still evolving and young photodissociation region.
Persistent link to this record
DOI
Link to Publisher Version
Author(s)
Burton, Michael
Chrysostomou, A
Brand, P
Ramsay-Howat, S
Supervisor(s)
Creator(s)
Editor(s)
Translator(s)
Curator(s)
Designer(s)
Arranger(s)
Composer(s)
Recordist(s)
Conference Proceedings Editor(s)
Other Contributor(s)
Corporate/Industry Contributor(s)
Publication Year
1997
Resource Type
Conference Paper
Degree Type
UNSW Faculty