{ "id": "2209.01007", "version": "v1", "published": "2022-09-02T12:44:26.000Z", "updated": "2022-09-02T12:44:26.000Z", "title": "Mass loss and the Eddington parameter", "authors": [ "Joachim M. Bestenlehner" ], "comment": "6 pages, 3 figures, Proceedings for IAU Symposium 361 \"Massive Stars Near and Far\" (eds. Nicole St-Louis, Jorick Vink, Jonathan Mackey)", "categories": [ "astro-ph.SR", "astro-ph.HE" ], "abstract": "Mass loss through stellar winds plays a dominant role in the evolution of massive stars. Very massive stars (VMSs, $> 100 M_{\\odot}$) display Wolf-Rayet spectral morphologies (WNh) whilst on the main-sequence. Bestenlehner (2020) extended the elegant and widely used stellar wind theory by Castor, Abbott & Klein (1975) from the optically thin (O star) to the optically thick main-sequence (WNh) wind regime. The new mass-loss description is able to explain the empirical mass-loss dependence on the Eddington parameter and is suitable for incorporation into stellar evolution models for massive and very massive stars. The prescription can be calibrated with the transition mass-loss rate defined in Vink & Gr\\\"afener (2012). Based on the stellar sample presented in Bestenlehner et al. (2014) we derive a mass-loss recipe for the Large Magellanic Cloud using the new theoretical mass-loss prescription of Bestenlehner (2020).", "revisions": [ { "version": "v1", "updated": "2022-09-02T12:44:26.000Z" } ], "analyses": { "keywords": [ "eddington parameter", "mass loss", "massive stars", "display wolf-rayet spectral morphologies", "transition mass-loss rate" ], "note": { "typesetting": "TeX", "pages": 6, "language": "en", "license": "arXiv", "status": "editable" } } }