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Astrophysics and Space Science, 1996
This review summarizes spectroscopic and imaging results obtained on board the Infrared Space Observatory (ISO) on well-known planetary nebulae: the young nebula NGC 7027, and two fully evolved nearby nebulae, the Dumbbell and the Helix.
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This review summarizes spectroscopic and imaging results obtained on board the Infrared Space Observatory (ISO) on well-known planetary nebulae: the young nebula NGC 7027, and two fully evolved nearby nebulae, the Dumbbell and the Helix.
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Interstellar Matter, Gaseous Nebulae, Planetary Nebulae
1970Grains responsible for the 2.2–22 μm infrared radiation from galaxies are charged by the photoelectric effect and effectively frozen into the ionized gas surrounding the galactic nuclei.
Ulrich Güntzel-Lingner +6 more
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Science, 1985