University of Hertfordshire

H2 Spectroscopy in the Photodissociation Region of M17 Northern Bar

Research output: Chapter in Book/Report/Conference proceedingConference contribution


  • A. Chrysostomou
  • P.W.J.L. Brand
  • M. Burton
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Original languageEnglish
Title of host publicationIn: Astronomical Infrared Spectroscopy: Future Observational Directions - ASP Conf Series 41
PublisherAstronomical Society of the Pacific
ISBN (Print)0-937707-60-0, 978-1-58381-377-5
Publication statusPublished - 1993


We present results of long slit spectroscopy, from 2.0 to 2.5 microns, of the photodissociation region in the northern bar of M17. The observations give us an insight into the physical conditions in the region and provide evidence which suggests that the ortho to para ratio of molecular hydrogen does not equal 3. We briefly discuss the astrophysical relevance of this.


Original paper can be found at: Copyright ASP

ID: 153416