The EUV source population and the local bubble
| Autor: | C. R. Barber, S. T. Hodgkin, R. S. Warwick, John P. Pye |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
Physics
Astrophysics::High Energy Astrophysical Phenomena Astronomy White dwarf Astronomy and Astrophysics Astrophysics::Cosmology and Extragalactic Astrophysics Astrophysics Interstellar medium Stars Local Bubble Space and Planetary Science Ultraviolet astronomy ROSAT Astrophysics::Solar and Stellar Astrophysics Source counts Late-type star Astrophysics::Galaxy Astrophysics |
| Zdroj: | Monthly Notices of the Royal Astronomical Society. 262:289-300 |
| ISSN: | 1365-2966 0035-8711 |
| DOI: | 10.1093/mnras/262.2.289 |
| Popis: | A catalogue of 384 relatively bright sources detected in the first-ever all-sky survey in the extreme ultraviolet, carried out by the UK Wide Field Camera (WFC) on ROSAT has recently been published. We have made a detailed study of the differential source counts of the two classes of source that dominate the WFC bright source catalogue, namely white dwarf stars and active late-type stars. The source counts are flatter than the uniform Euclidean form, with the counts of white dwarf stars, in particular, giving evidence of very strong absorption. We find that the global source counts can be best explained in terms of a bubble model in which a local low-density region is bounded by higher density gas |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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