Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989esasp.290..307b&link_type=abstract
In ESA, Infrared Spectroscopy in Astronomy p 307-315 (SEE N90-19084 11-89)
Astronomy and Astrophysics
Astronomy
2
Hydrogen Clouds, Infrared Spectroscopy, Interplanetary Dust, Line Spectra, Planetary Nebulae, Emission Spectra, Fine Structure, Infrared Astronomy, Infrared Spectra, Molecular Spectra, Spectrum Analysis
Scientific paper
The developments that occurred in the field of infrared spectroscopy of planetary nebulae, since 1983, are reviewed. The observations concerning ionic fine structure line emission from planetary nebulae are underlined. The observations and interpretation of molecular hydrogen line emission from planetary nebulae are summarized. The work performed on the identified and unidentified dust emission; features in the infrared spectra and the overall energetics of the continuum dust emission observed from planetary nebulae is discussed. Recent work on the modeling of the dust emission continua and on the derivation of gas-to-dust mass ratios is also reviewed.
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