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dc.date.accessioned | 2021-09-01T15:03:40Z | |
dc.date.available | 2021-09-01T15:03:40Z | |
dc.date.issued | 2001-06-15 | |
dc.identifier.uri | http://sedici.unlp.edu.ar/handle/10915/123953 | |
dc.description.abstract | A sample of OB stars (eleven Of, one O and one B supergiant) has been surveyed with the Australia Telescope Compact Array at 4.8 and 8.64 GHz with a resolution of ∼2"–4". Five stars were detected; three of them have negative spectral indices, consistent with non-thermal emission, and two have positive indices. The thermal radiation from HD 150135 and HD 163181 can be explained as coming from an optically thick ionized stellar wind. The non-thermal radiation from CD–47◦ 4551, HD 124314 and HD 150136 possibly comes from strong shocks in the wind itself and/or in the wind colliding region if the stars have a massive early-type companion. The percentage of non-thermal emitters among detected O stars has increased up to ∼50%. The Of star HD 124314 clearly shows flux density variations. Mass loss rates (or upper limits) were derived for all the observed stars and the results compared with non-radio measurements and theoretical predictions. | en |
dc.format.extent | 952-962 | es |
dc.language | en | es |
dc.subject | stars: early-type | es |
dc.subject | stars: mass loss | es |
dc.subject | stars: winds, outflows | es |
dc.subject | radio continuum: stars | es |
dc.title | Mass loss rate determinations of southern OB stars | en |
dc.type | Articulo | es |
sedici.identifier.other | arXiv:astro-ph/0105056 | es |
sedici.identifier.other | doi:10.1051/0004-6361:20010617 | es |
sedici.identifier.issn | 0004-6361 | es |
sedici.identifier.issn | 1432-0746 | es |
sedici.creator.person | Benaglia, Paula | es |
sedici.creator.person | Cappa, Cristina Elisabet | es |
sedici.creator.person | Koribalski, B. S. | es |
sedici.subject.materias | Ciencias Astronómicas | es |
sedici.description.fulltext | true | es |
mods.originInfo.place | Facultad de Ciencias Astronómicas y Geofísicas | es |
mods.originInfo.place | Instituto Argentino de Radioastronomía | es |
sedici.subtype | Articulo | es |
sedici.rights.license | Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) | |
sedici.rights.uri | http://creativecommons.org/licenses/by-nc-sa/4.0/ | |
sedici.description.peerReview | peer-review | es |
sedici.relation.journalTitle | Astronomy & Astrophysics | es |
sedici.relation.journalVolumeAndIssue | vol. 372, no. 3 | es |