Analytical solutions for radiation-driven winds in massive stars – II. The δ-slow regime

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dc.contributor.authorAraya, I
dc.contributor.authorChristen, A
dc.contributor.authorCuré, M
dc.contributor.authorCidale, L S
dc.contributor.authorVenero, R O J
dc.contributor.authorArcos, C
dc.contributor.authorGormaz-Matamala, A C
dc.contributor.authorHaucke, M
dc.contributor.authorEscárate, P
dc.contributor.authorClavería, H
dc.date.accessioned2022-11-30T02:46:10Z
dc.date.available2022-11-30T02:46:10Z
dc.date.issued2021
dc.description.abstractAccurate mass-loss rates and terminal velocities from massive stars winds are essential to obtain synthetic spectra from radiative transfer calculations and to determine the evolutionary path of massive stars. From a theoretical point of view, analytical expressions for the wind parameters and velocity profile would have many advantages over numerical calculations that solve the complex non-linear set of hydrodynamic equations. In a previous work, we obtained an analytical description for the fast wind regime. Now, we propose an approximate expression for the line-force in terms of new parameters and obtain a velocity profile closed-form solution (in terms of the Lambert W function) for the δ-slow regime. Using this analytical velocity profile, we were able to obtain the mass-loss rates based on the m-CAK theory. Moreover, we established a relation between this new set of line-force parameters with the known stellar and m-CAK line-force parameters. To this purpose, we calculated a grid of numerical hydrodynamical models and performed a multivariate multiple regression. The numerical and our descriptions lead to good agreement between their values.en_ES
dc.facultadFacultad de Cienciasen_ES
dc.file.nameAraya_Ana2021.pdf
dc.identifier.citationI Araya, A Christen, M Curé, L S Cidale, R O J Venero, C Arcos, A C Gormaz-Matamala, M Haucke, P Escárate, H Clavería, Analytical solutions for radiation-driven winds in massive stars – II. The δ-slow regime, Monthly Notices of the Royal Astronomical Society, Volume 504, Issue 2, June 2021, Pages 2550–2556, https://doi.org/10.1093/mnras/stab995en_ES
dc.identifier.doihttps://doi.org/10.1093/mnras/stab995
dc.identifier.urihttp://repositoriobibliotecas.uv.cl/handle/uvscl/7221
dc.languageen
dc.publisherRoyal Astronomical Society
dc.rights© 2021 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society
dc.sourceMonthly Notices of the Royal Astronomical Society
dc.subjectHYDRODYNAMICSen_ES
dc.subjectMETHODS: ANALYTICALen_ES
dc.subjectSTARS: EARLY-TYPEen_ES
dc.subjectSTARS: MASS-LOSSen_ES
dc.subjectSTARS: WINDSen_ES
dc.subjectOUTFLOWSen_ES
dc.titleAnalytical solutions for radiation-driven winds in massive stars – II. The δ-slow regime
dc.typeArticulo
uv.departamentoInstituto de Fisica y Astronomia
uv.notageneralNo disponible para descarga

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