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Mass-loss rates for 21 Wolf–Rayet stars

BARLOW, MJ; SMITH, LJ; WILLIS, AJ; (1981) Mass-loss rates for 21 Wolf–Rayet stars. Monthly Notices of the Royal Astronomical Society , 196 (2) pp. 101-110. 10.1093/mnras/196.2.101. Green open access

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Abstract

Mass-loss rates have been derived for 21 WR stars encompassing most subtypes in the WN and WC sequences, from measurements of their infrared free–free fluxes. The resultant mass-loss rates show a range of only a factor of 4. WC stars generally have larger mass-loss rates than WN stars, the mean rates being M˙(WC)=4.1×10−5M⊙yr−1 and M˙(WN)=2.7×10−5M⊙yr−1⁠. Optical and ultraviolet data have been used to estimate bolometric luminosities for a range of WR spectral types, and it is shown that the derived mass loss rates are too large to be powered by radiation pressure. The total kinetic energy injected into the interstellar medium through mass loss during the WR phase of a massive star is estimated to be 7 × 1050 erg, comparable to that of a supernova event.

Type: Article
Title: Mass-loss rates for 21 Wolf–Rayet stars
Open access status: An open access version is available from UCL Discovery
DOI: 10.1093/mnras/196.2.101
Publisher version: https://doi.org/10.1093/mnras/196.2.101
Language: English
Additional information: This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/10096224
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