Calculation of infrared spectra from dust in planetary nebulae

Details Calculation of infrared spectra from dust in planetary nebulae Calculation of infrared spectra from dust in planetary nebulae

Nov 1974

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974hrgc.conf..185e&link_type=abstract

H II regions and the galactic centre : proceedings of the Eighth ESLAB Symposium, 4-7 June 1974, Frascati, Italy, p. 185-190 (SE

Astronomy and Astrophysics

Astronomy

Cosmic Dust, Infrared Spectra, Planetary Nebulae, Grains, Graphite, Hydrogen Ions, Infrared Astronomy, Lyman Alpha Radiation, Radiant Flux Density

Scientific paper

Calculations of dust grain temperature in planetary nebulae were performed, using an improved method applied to graphite core-ice mantle, carbonates, and silicates. The spectra of several nebulae were calculated with these values of grain temperature and compared with experiments. It is concluded that it is necessary to set grains inside the H2 region to interpret the observations. Most of the Lg alpha flux can escape the H2 region and may heat dust in the H1 region. The measurements at 20 micrometer can be interpreted as stemming partly from this cold component.

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