Infall and Outflow Activities in the Be star FY CMa
Cao Huilai
Source PublicationChinese Journal of Astronomy and Astrophysics
AbstractUnusual activity of outflow mass motion connected with infall events was recorded for the B0.5 IVe star FY CMa in February 1987 from both archival IUE spectrograms of circumstellar N V resonance lines and optical spectra of Ha and He I lambda5876 Angstrom emission lines which showed inverse P Cygni-type profiles. We estimate the mass loss rate using ultraviolet Si IVresonance lines with expanding atmosphere modeling calculations, and describe how the radial pressure performs the dominant role in accelerating the stellar wind. We attempt to give a qualitative explanation for the activity observed for FY CMa in terms of circumstellar matter raining down to the star.
Document Type期刊论文
First Author AffilicationNational Astronomical Observatories, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Cao Huilai. Infall and Outflow Activities in the Be star FY CMa[J]. Chinese Journal of Astronomy and Astrophysics,2001,1(6):514.
APA Cao Huilai.(2001).Infall and Outflow Activities in the Be star FY CMa.Chinese Journal of Astronomy and Astrophysics,1(6),514.
MLA Cao Huilai."Infall and Outflow Activities in the Be star FY CMa".Chinese Journal of Astronomy and Astrophysics 1.6(2001):514.
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