Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1992
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992mnras.256..437r&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 256, no. 3, June 1, 1992, p. 437-448.
Astronomy and Astrophysics
Astronomy
16
Cosmic Dust, Infrared Astronomy Satellite, Interstellar Matter, Radiative Transfer, Stellar Models, Ice, Opacity, Silicates, Stellar Composition, T Tauri Stars
Scientific paper
Results are presented of fitting a spherically symmetric circumstellar dust model to the peculiar source IRAS 09371 + 1212, a bipolar nebula with an extremely cool dust shell which exhibits clear evidence for large quantities of water ice. The 3.1-micron ice absorption feature and the two ice emission features at 44 and 62 microns can simultaneously be well fitted, showing that it is the same dust which gives rise to both features. It is found that a good fit can be obtained using crystalline ice particles, in agreement with the results of earlier simple models. Core region limb brightening is predicted at wavelengths where the shell is optically thin. As a result, the 3.1-micron ice absorption feature should be deepest at the inner boundary of the dust shell. The evolutionary status is discussed, and the possibility that IRAS 09371 + 1212 may be a weak or naked T Tauri star rather than an evolved object, as is generally believed, is examined.
Hyland A. R.
Robinson Geoffrey
Smith Gary R.
No associations
LandOfFree
A spherical circumstellar dust model for IRAS 09371 + 1212 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 A spherical circumstellar dust model for IRAS 09371 + 1212, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A spherical circumstellar dust model for IRAS 09371 + 1212 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1521972