CIRCUSTELLAR MATTER ACTIVITY IN AE/BE HERBIG STAR MWC 614
| Autor: | A. N. Adigezalzade, N. Z. Ismailov, U. Z. Bashirova |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Physics
Hydrogen lcsh:Astronomy chemistry.chemical_element Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Star (graph theory) lcsh:QB1-991 Stars chemistry Astrophysics::Solar and Stellar Astrophysics Absorption (electromagnetic radiation) Astrophysics::Galaxy Astrophysics Line (formation) |
| Zdroj: | Odessa Astronomical Publications, Vol 30, Iss 0, Pp 78-84 (2017) |
| ISSN: | 1810-4215 |
| Popis: | The results of spectral observations of the Herbig Ae/Be type star HD 179218 are presented. Two wave-like cycles of variability in the parameters of hydrogen lines H α and H β with a characteristic time of ~ 40 days are revealed. The first wave of variations is deeper; the branches of decreasing and increasing the spectral parameters of the lines are more clearly expressed. At the time of the first minimum, in the profile of the emission lineH α the appearance and disappearance of additional blue and red emission components are observed. At the same time, narrow absorption components were discovered in the H β line. Possible mechanisms of the observed variability of the star are discussed. |
| Databáze: | OpenAIRE |
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