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Young Stellar Clusters with a Schuster Mass Distribution - I: Stationary Winds
SERGIO MARTINEZ GONZALEZ
SERGIY SILICH
GUILLERMO TENORIO TAGLE
Acceso Abierto
Atribución-NoComercial-SinDerivadas
Stars: winds, outflows
Galaxies: star clusters: general
Galaxies: starburst
Hydrodynamics
Instabilities
Hydrodynamic models for spherically-symmetric winds driven by young stellar clusters with a generalized Schuster stellar density profile are explored. For this we use both semi-analytic models and 1D numerical simulations. We determine the properties of quasi-adiabatic and radiative stationary winds and define the radius at which the flow turns from subsonic into supersonic for all stellar density distributions. Strongly radiative winds diminish significantly their terminal speed and thus their mechanical luminosity is strongly reduced. This also reduces their potential negative feedback into their host galaxy ISM. The critical luminosity above which radiative cooling becomes dominant within the clusters, leading to thermal instabilities which make the winds non-stationary, is determined, and its dependence on the star cluster density profile, core radius and half mass radius is discussed.
The Astrophysical Journal
31-05-2013
Artículo
Inglés
Estudiantes
Investigadores
Público en general
Palous, Jan., et al., (2013). Young Stellar Clusters with a Schuster Mass Distribution - I: Stationary Winds, The Astrophysical Journal, Vol. 772(2):1-21
ASTRONOMÍA Y ASTROFÍSICA
Versión aceptada
acceptedVersion - Versión aceptada
Appears in Collections:Artículos de Astrofísica

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