Time-dependent spectral-feature variations of stars displaying the B[e] phenomenon
| Autor: | N. Manset, Jan Polster, D. Korčáková |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Physics
Accretion (meteorology) 010308 nuclear & particles physics Astronomy and Astrophysics Astrophysics Star (graph theory) 01 natural sciences Spectral line Stars Accretion disc Space and Planetary Science Feature (computer vision) 0103 physical sciences 010303 astronomy & astrophysics Line (formation) |
| Zdroj: | Astronomy & Astrophysics. 617:A79 |
| ISSN: | 1432-0746 0004-6361 |
| Popis: | We present an alternative model of V2028 Cyg, a B[e] star of FS CMa type. The star V2028 Cyg is atypical among FS CMa stars due to its composite spectra of B4III and K2II-Ib type. Our modelling of the temporal variability of the Hα line bisectors indicates as the most probable model a geometrically and optically thick disc, which is surrounded by a dusty ring seen almost edge-on. This provides a possibility that the K-spectral component is formed in the disc. |
| Databáze: | OpenAIRE |
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