Emission activity of the Be star 60 Cygni
| Autor: | Viktor Votruba, Klára Šejnová |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
lcsh:Astronomy Be star Stars: emission-line Extinction (astronomy) FOS: Physical sciences Be Astronomy and Astrophysics Astrophysics Star (graph theory) lcsh:QB1-991 Astrophysics - Solar and Stellar Astrophysics Observatory Emission spectrum Variation (astronomy) Stars: individual: 60 Cygni Equivalent width Solar and Stellar Astrophysics (astro-ph.SR) Line (formation) |
| Zdroj: | Serbian Astronomical Journal, Vol 2017, Iss 194, Pp 51-57 (2017) |
| DOI: | 10.48550/arxiv.1709.08984 |
| Popis: | In this paper we present results of spectroscopic analysis of the H? line profile of the Be star 60 Cygni. We present time evolution of the equivalent width of the H? line profiles during years 1992 - 2016 and V=R variation during years 1995 - 2016. We analyzed data from Ond?ejov Observatory and from BeSS Database. The circumstellar disk of the star was present twice during years 1992 - 2016 and the second cycle shows stronger emission activity. We found out that the formation of the disk takes longer time than the disk extinction (the extinction is much steeper than the formation) and that there is no evident period of changes in the V=R variation. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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