Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977sci...195..541n&link_type=abstract
Science, vol. 195, Feb. 11, 1977, p. 541-546. NASA-NSF-supported research.
Astronomy and Astrophysics
Astronomy
20
Cosmic Dust, Infrared Astronomy, Interstellar Matter, Refractory Materials, Black Body Radiation, Carbon, Comets, Kohoutek Comet, Nebulae, Radiation Pressure, Spectral Energy Distribution, Stellar Atmospheres, Stellar Envelopes, Stellar Spectra, Supergiant Stars
Scientific paper
Recent infrared techniques have revealed that the dust which is a major constituent of the universe, is composed of refractory grains produced by certain classes of stars, condensed in their atmospheres and blown into interstellar space by the radiation pressure of these stars. In some cases stars are surrounded by dust shells which consist of carbon refractories in the case of a carbon-rich environment, and metallic silicates of the kind that produced terrestrial planets in the case of oxygen-rich environments. A few of these infrared stars (called cygnids) exhibit a unique morphology that suggests the formation of a planetary stage in the evolution of a planetary nebula. Comets which are bright in the infrared and believed to be the remnants of the most primitive material in the solar nebula, are found to inject the astrophysical dust into our solar system together with asteroidal debris. Certain novae are also found to condense grains which are blown out in their shells after the explosion.
No associations
LandOfFree
Star dust 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 Star dust, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Star dust will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-800775