期刊
ASTRONOMY & ASTROPHYSICS
卷 544, 期 -, 页码 -出版社
EDP SCIENCES S A
DOI: 10.1051/0004-6361/201219768
关键词
line: profiles; scattering; stars: winds, outflows; stars: pre-main sequence
资金
- Presidium of RAS [N 21, N. Sh.- 1625.2012.2]
It is known that scattering of radiation by circumstellar dust can strongly change the line profiles in stellar spectra. This hampers the analysis of spectral lines originating in the emitting regions of heavily obscured young stars. To calculate the line profile of the scattered radiation, we suggest to use the approximation of remote scattering particles. This approximation assumes that the scattering dust grains are at a distance from the star that is much larger than the characteristic size of the emitting region. Using this method, we calculated the line profiles of several simple models. They show the Ha line profiles of Herbig AeBe stars in the presence and absence of motionless or moving dust.
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