A survey of "PAH" emission in H II regions, planetary and proto-planetary nebulae.

Details A survey of "PAH" emission in H II regions, planetary and proto-planetary nebulae. A survey of "PAH" emission in H II regions, planetary and proto-planetary nebulae.

Sep 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.290..359j&link_type=abstract

22. ESLAB Symposium on Infrared Spectroscopy in Astronomy, p. 359 - 362

Astronomy and Astrophysics

Astronomy

Polycyclic Hydrocarbons: Planetary Nebulae, Polycyclic Hydrocarbons: H Ii Regions, Polycyclic Hydrocarbons: Protoplanetary Nebulae, Infrared Spectroscopy: Planetary Nebulae, Infrared Spectroscopy: H Ii Regions

Scientific paper

The authors report on preliminary results of a systematic investigation of PAH emission in H II regions, planetary nebulae (PN) and proto-planetary nebulae (PPN). This emission occurs in a vast majority of H II regions showing the ubiquity of the carriers. With the possible exception of NGC 6302, PAH emission is only seen in carbon-rich PNs and PPNs and is quite common in this case. This shows that PAHs are formed, at least partly, in carbon-rich evolved objects.

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