Lizenz
Bitte beziehen Sie sich beim Zitieren dieses Dokumentes immer auf folgende
URN: urn:nbn:de:kobv:517-opus-17647
URL: http://opus.kobv.de/ubp/volltexte/2008/1764/
Fullerton, A. W. ;
Massa, D. L. ;
Prinja, R. K.
Revised mass-loss rates for O stars from the Pv resonance line
Kurzfassung in Englisch
The P v λλ1118, 1128 resonance doublet is an extraordinarily useful diagnostic of O-star winds, because it bypasses the traditional problems associated with determining mass-loss rates from UV resonance lines. We discuss critically the assumptions and uncertainties involved with using P v to diagnose mass-loss rates, and conclude that the large discrepancies between massloss rates determined from P v and the rates determined from “density squared” emission processes pose a significant challenge to the “standard model” of hot-star winds. The disparate measurements can be reconciled if the winds of O-type stars are strongly clumped on small spatial scales, which in turn implies that mass-loss rates based on Hα or radio emission are too large by up to an order of magnitude.
|
RVK - Regensburger Verbundklassifikation: |
|
US 1999.07 |
|
Collection 1: |
|
Universität Potsdam / Tagungen / Clumping in hot-star winds: International Workshop, Potsdam, Germany, 18. - 22. June 2007 / Talks and Discussions (organized by sections) / Spectroscopy and mass loss diagnostic: observations |
|
Collection 2: |
|
Universität Potsdam / Tagungen / Clumping in hot-star winds: International Workshop, Potsdam, Germany, 18. - 22. June 2007 / Talks and Discussions (in alphabetical order) |
|
Collection 3: |
|
Universität Potsdam / Tagungen / Clumping in hot-star winds: International Workshop, Potsdam, Germany, 18. - 22. June 2007 |
|
Institut: |
|
Extern |
|
DDC-Sachgruppe: |
|
Astronomie |
|
Dokumentart: |
|
c InProceedings (Aufsatz / Paper einer Konferenz etc.) |
|
Sprache: |
|
Englisch |
|
Erstellungsjahr: |
|
2007 |
|
Publikationsdatum: |
|
25.04.2008 |
|
Bemerkung: |
|
The complete edition of the proceedings "Clumping in hot-star winds" is available:
urn:nbn:de:kobv:517-opus-13981 |
|
Lizenz: |
|
Diese Nutzungsbedingung gilt nicht, wenn in den Metadaten eine modifizierende Lizenz genannt ist.
Keine Nutzungslizenz vergeben - es gilt das deutsche Urheberrecht
|