UV survey of ? Scuti stars: Final results and open problems
| Autor: | Laura E. Pasinetti Fracassini, L. Pastori |
|---|---|
| Rok vydání: | 1996 |
| Předmět: |
Physics
Stars Space and Planetary Science Astrophysics::High Energy Astrophysical Phenomena Astrophysics::Solar and Stellar Astrophysics Astronomy Astronomy and Astrophysics Astrophysics::Earth and Planetary Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Astrophysics::Galaxy Astrophysics Cosmology Line (formation) |
| Zdroj: | Astrophysics and Space Science. 240:205-213 |
| ISSN: | 1572-946X 0004-640X |
| Popis: | The results obtained from our IUE observations of some δ Scuti stars and in particular 71 Tau and 69 Tau are reviewed. 71 Tau is the second brightest X-ray source of the Hyades cluster; on the contrary 69 Tau, very similar to 71 Tau in the optical range, does not show X emissions. The complex and in somewhat controversial scenario obtained from this survey is also discussed. In particular we consider the X-ray emission detected in some δ Scuti with respect to the chromospheric activity level as measured through the MgII line and to other stellar parameters. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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