Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984mnras.208..751a&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 208, June 15, 1984, p. 751-761.
Astronomy and Astrophysics
Astronomy
42
Emission Spectra, Galactic Nuclei, Infrared Astronomy, Infrared Spectra, Interstellar Extinction, Planetary Nebulae, Interstellar Matter, Orion Nebula, Spectral Line Width, Stellar Envelopes
Scientific paper
From an examination of the published 8-13 micron spectra of galactic sources which show the unidentified emission features at 8.65 and 11.25 microns, and which are not heavily obscured, relationships between the feature equivalent widths and the depth of 10 micron minimum are established. Using these relationships a procedure is suggested for estimating extinction to objects whose 10 micron spectra are complicated by the presence of the features and the method is applied to the sample of 12 emission-line galaxy nuclei for which 10 micron spectra exist.
Aitken David K.
Roche Patrick F.
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