About: Mass and angular momentum loss via decretion disks

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
rdfs:seeAlso	http://www.aanda.org/index.php?option=com_article&access=doi&doi=10.1051/0004-6361/201015951&Itemid=129
Description	We examine the nature and role of mass loss via an equatorial decretion disk in massive stars with near-critical rotation induced by evolution of the stellar interior. In contrast to the usual stellar wind mass loss set by exterior driving from the stellar luminosity, such decretion-disk mass loss stems from the angular momentum loss needed to keep the star near and below critical rotation, given the interior evolution and decline in the star’s moment of inertia. Because the specific angular momentum in a Keplerian disk increases with the square root of the radius, the decretion mass loss associated with a required level of angular momentum loss depends crucially on the outer radius for viscous coupling of the disk, and can be significantly less than the spherical, wind-like mass loss commonly assumed in evolutionary calculations. We examine the nature and role of mass loss via an equatorial decretion disk in massive stars with near-critical rotation induced by evolution of the stellar interior. In contrast to the usual stellar wind mass loss set by exterior driving from the stellar luminosity, such decretion-disk mass loss stems from the angular momentum loss needed to keep the star near and below critical rotation, given the interior evolution and decline in the star’s moment of inertia. Because the specific angular momentum in a Keplerian disk increases with the square root of the radius, the decretion mass loss associated with a required level of angular momentum loss depends crucially on the outer radius for viscous coupling of the disk, and can be significantly less than the spherical, wind-like mass loss commonly assumed in evolutionary calculations. (en)
Title	Mass and angular momentum loss via decretion disks Mass and angular momentum loss via decretion disks (en)
skos:prefLabel	Mass and angular momentum loss via decretion disks Mass and angular momentum loss via decretion disks (en)
skos:notation	RIV/00216224:14310/11:00049699!RIV12-GA0-14310___
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA205/08/0003)
http://linked.open...iv/cisloPeriodika	03
http://linked.open...vai/riv/dodaniDat	2012
http://linked.open...aciTvurceVysledku	Krtička, Jiří
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Masarykova univerzita / Přírodovědecká fakulta
http://linked.open...dnocenehoVysledku	210766
http://linked.open...ai/riv/idVysledku	RIV/00216224:14310/11:00049699
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	stars: mass-loss; stars: evolution; stars: rotation; hydrodynamics; stars: early-type (en)
http://linked.open.../riv/klicoveSlovo	stars: early-type stars: evolution stars: mass-loss stars: rotation hydrodynamics
http://linked.open...odStatuVydavatele	FR - Francouzská republika
http://linked.open...ontrolniKodProRIV	[136FC3907316]
http://linked.open...i/riv/nazevZdroje	Astronomy and Astrophysics
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Mass-loss rate predictions for hot stars
http://linked.open...UplatneniVysledku	2011
http://linked.open...v/svazekPeriodika	527
http://linked.open...iv/tvurceVysledku	Krtička, Jiří Meynet, Georges Owocki, Stanley P.
http://linked.open...ain/vavai/riv/wos	000287484100099
issn	0004-6361
number of pages	9 (xsd:int)
http://bibframe.org/vocab/doi	10.1051/0004-6361/201015951
http://localhost/t...ganizacniJednotka	14310

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