Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986a%26a...161..347a&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 161, no. 2, June 1986, p. 347-356.
Astronomy and Astrophysics
Astrophysics
2
Hydrogen Clouds, Infrared Spectra, Line Spectra, Nitrogen, Oxygen, Stellar Models, Abundance, Interstellar Matter, Nebulae, Neutral Gases
Scientific paper
Model calculations of the O and N ionization structures for both a hot and a cool ionizing source placed in an exponential density gradient are presented, and the effects of charge exchange, absorption of O and N on the ionizing radiation, and the effects of nebular dust are included. Self-absorption is found to be important in determining the ionization structure of O and N, and it is suggested that preferentially absorbing dust causes large differences in the spatial distribution of O and N ions. It is shown that the present far-infrared line observations may lead, for the cooler radiation field, to underestimations of the O(++) ionic abundance, and overestimations of the N/O cosmic abundance ratio, in addition to an overestimation of the effective temperature of the radiation field.
Aannestad Per A.
Emery Roger J.
No associations
LandOfFree
Modelling for O and N infrared line observations of H II blisters does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Modelling for O and N infrared line observations of H II blisters, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modelling for O and N infrared line observations of H II blisters will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1829466