Circumstellar Dust and Circumstellar Extinction Curves

Details Circumstellar Dust and Circumstellar Extinction Curves Circumstellar Dust and Circumstellar Extinction Curves

Feb 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995ap%26ss.224..223v&link_type=abstract

Astrophysics and Space Science, Volume 224, Issue 1-2, pp. 223-226

Astronomy and Astrophysics

Astrophysics

4

Circumstellar Matter, Stars: Pre-Main-Sequence, Dust, Extinction

Scientific paper

We have calculated the circumstellar extinction curves produced by dust grains which absorb and scatter the stellar radiation in the shells of pre-main-sequence stars. A Monte Carlo method was used to model the radiative transfer in non-spherical shells. The dependence on the particle size distribution and the dust shell parameters has been examined. The application of the theoretical results to explain the extinction and polarization of the Herbig Be star HD 45677 shows that the dust shell is not disk-like and that very small grains are absent in it.

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