The DOI matches its Crossref record; 30 of the 30 references it cites were found in a registry or an index.
On the metallicity dependence of Wolf-Rayet winds
Open accessAbstract
We have performed a pilot study of mass loss predictions for late-type Wolf-Rayet (WR) stars as a function of metal abundance, over a range between Z. We find that the winds of nitrogen-rich Wolf-Rayet stars are dominated by iron lines, with a dependence of mass loss on Z similar to that of massive OB stars. For more evolved, carbon-rich, WR stars the wind strength is also found to be dependent on the Fe abundance, so that they depend on the chemical environment of the host galaxy, but with a mass loss metallicity dependence that is less steep than for OB stars. Our finding that WR mass loss is Z-dependent is a new one, with important consequences for black hole formation and X-ray population studies in external galaxies. A further finding of our study is that the Z dependence of C-rich WR stars becomes weaker at metallicities below 1/10, and mass loss no longer declines once the metal abundance drops below (Z/) 10-3. This is the result of an increased importance of radiative driving by intermediate mass elements, such as carbon. In combination with rapid rotation and/or proximity to the Eddington limit – likely to be relevant for massive Population iii stars – this effect may indicate a role for mass loss in the appearance and evolution of these objects, as well as a potential role for stellar winds in enriching the intergalactic medium of the early Universe.
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Cites
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Mass-loss predictions for O and B stars as a function of metallicity
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Self-citationRadiation-driven winds in Of stars
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A very energetic supernova associated with the γ-ray burst of 29 March 2003
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The Supernova–Gamma-Ray Burst Connection
Woosley, S. E., & Bloom, J. S. (2006) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.43.072103.150558 · Cited by 1,766
Mass Loss: Its Effect on the Evolution and Fate of High-Mass Stars
Smith, N. (2014) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev-astro-081913-040025 · Cited by 1,042
Abbott, B. P., Abbott, R., Abbott, T. D., Abraham, S., Acernese, F., Ackley, K., Adams, C., Adhikari, R. X., Adya, V. B., Affeldt, C., et al. (2019) · The Astrophysical Journal Letters · doi:10.3847/2041-8213/ab3800 · Cited by 895
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Metadata
- Authors
- Vink, J. S., & de Koter, A.
- Venue
- Astronomy & Astrophysics
- Publisher
- EDP Sciences
- Published
- 2005-10-07
- Volume
- 442
- Issue
- 2
- Pages
- 587-596
- ISSN
- 0004-6361 (ISSN-L)
- 1432-0746
- OpenAlex
- W2099120683
- Cited by
- 466
- References
- 30
- FWCI
- 15.23
- Type
- journal article
- Language
- en
- Open access
- bronze
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