Astronomy and Astrophysics – Astrophysics
Scientific paper
Nov 1987
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987apj...322..374m&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 322, Nov. 1, 1987, p. 374-392. NSERC-supported research.
Astronomy and Astrophysics
Astrophysics
154
Carbon Stars, Radiative Transfer, Stellar Composition, Stellar Envelopes, Stellar Mass Ejection, Stellar Models, Graphite, Optical Properties, Polarization Characteristics, Stellar Luminosity
Scientific paper
IRC +10216 is a well-observed carbon star with copious mass loss, surrounded by an expanding envelope of dust and molecular gas. The authors have studied the dust component using radiative transfer calculations by the half-range moment method. The models are sensitive to the choice of grain properties, basically size and composition. Two types of carbon material were considered: "amorphous carbon" and graphite. Small particles of amorphous carbon (radius ≈ 0.05 - 0.1 μm) seem most suitable. The authors conclude that graphite is not a major component of carbon-rich stardust. SiC is also not a major constituent material. These models provide information on the spectrum, the surface brightness, the polarization, and the relative importance of direct starlight, scattered light, and thermal emission. The authors assess the extent to which observations show that a spherically symmetric density distribution is an oversimplification.
Martin Peter G.
Rogers Christopher
No associations
LandOfFree
Carbon grains in the envelope of IRC +10216 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 Carbon grains in the envelope of IRC +10216, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Carbon grains in the envelope of IRC +10216 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1713345