PAHs in compact HII regions

Details PAHs in compact HII regions PAHs in compact HII regions

Mar 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999esasp.427..739p&link_type=abstract

The Universe as Seen by ISO. Eds. P. Cox & M. F. Kessler. ESA-SP 427., p. 739

Physics

7

Ism: Dust, Ism: Hii Regions, Ism: Molecules, Infrared: Ism: Lines And Bands

Scientific paper

As part of the ISO guaranteed time program devoted to the study of compact HII regions in the Galaxy, ISO-SWS spectra covering the complete SWS wavelength range from a large sample of HII regions were obtained. The sample covers a large range in galactic radii from the galactic center out to a distance of ~25 kpc. In addition to strong atomic emission lines, these data show a wealth of infrared emission features attributed to Polycyclic Aromatic Hydrocarbons (PAHs). The strength and shape of these features exhibit considerable variations in different lines-of-sight. These variations are thought to be a consequence of varying physical conditions of the emitting region (radiation field, density etc.).

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