| Attributes | Values |
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| rdf:type
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| Description
| - V této práci studujeme osově symetrické modely vrstvených protoplanetárních disků, přičemž bereme v úvahu vliv přenosu záření a zbytkovou viskozitu v mrtvé zóně. Zkoumáme také vliv různých typů viskozity. Mimo prstencové nestability, která byla popsána v prvním z článků této řady, jsme nalezli oscilující nestabilitu mrtvé zóny, doprovázenou změnami v rychlosti akrece hmoty na centrální hvězdu. Uvádíme také zjednodušený analytický popis mechanismu těchto oscilací. Nakonec jsme též zjistili, že zbytková viskozita umožňuje stacionární akreci v rozsáhlých oblastech vrstvených disků. Na základě výsledků získaných s pomocí jednoduchého 1D hydrodynamického kódu jsme identifikovali tyto oblasti, a diskutujeme podmínky, za kterých může ve vrstveném disku nastat jev typu FU Orionis. (cs)
- We study axisymmetric models of layered protoplanetary discs taking radiative transfer effects into account, and allowing for a residual viscosity in the dead zone. We also explore the effect of different viscosity prescriptions. In addition to the ring instability reported in the first paper of the series we find an oscillatory instability of the dead zone, accompanied by variations of the accretion rate onto the central star. We provide a simplified analytical description explaining the mechanism of the oscillations. Finally, we find that the residual viscosity enables stationary accretion in large regions of layered discs. Based on results obtained with the help of a simple 1-D hydrocode we identify these regions, and discuss conditions in which layered discs can give rise to FU~Orionis phenomena.
- We study axisymmetric models of layered protoplanetary discs taking radiative transfer effects into account, and allowing for a residual viscosity in the dead zone. We also explore the effect of different viscosity prescriptions. In addition to the ring instability reported in the first paper of the series we find an oscillatory instability of the dead zone, accompanied by variations of the accretion rate onto the central star. We provide a simplified analytical description explaining the mechanism of the oscillations. Finally, we find that the residual viscosity enables stationary accretion in large regions of layered discs. Based on results obtained with the help of a simple 1-D hydrocode we identify these regions, and discuss conditions in which layered discs can give rise to FU~Orionis phenomena. (en)
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| Title
| - Two-dimensional models of layered protoplanetary discs. II. - The effect of a residual viscosity in the dead zone
- Two-dimensional models of layered protoplanetary discs. II. - The effect of a residual viscosity in the dead zone (en)
- Dvourozměrné modely vrstvených protoplanetárních disků. II. - Vliv zbytkové viskozity v mrtvé zóně (cs)
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| skos:prefLabel
| - Two-dimensional models of layered protoplanetary discs. II. - The effect of a residual viscosity in the dead zone
- Two-dimensional models of layered protoplanetary discs. II. - The effect of a residual viscosity in the dead zone (en)
- Dvourozměrné modely vrstvených protoplanetárních disků. II. - Vliv zbytkové viskozity v mrtvé zóně (cs)
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| skos:notation
| - RIV/67985815:_____/06:00048247!RIV07-AV0-67985815
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
| |
| http://linked.open...avai/riv/aktivity
| - P(IAB3003106), Z(AV0Z10030501)
|
| http://linked.open...iv/cisloPeriodika
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| http://linked.open...vai/riv/dodaniDat
| |
| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
| |
| http://linked.open...iv/duvernostUdaju
| |
| http://linked.open...titaPredkladatele
| |
| http://linked.open...dnocenehoVysledku
| |
| http://linked.open...ai/riv/idVysledku
| - RIV/67985815:_____/06:00048247
|
| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - accretion discs; hydrodynamics; instabilities (en)
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| http://linked.open.../riv/klicoveSlovo
| |
| http://linked.open...odStatuVydavatele
| - GB - Spojené království Velké Británie a Severního Irska
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/nazevZdroje
| - Monthly Notices of the Royal Astronomical Society
|
| http://linked.open...in/vavai/riv/obor
| |
| http://linked.open...ichTvurcuVysledku
| |
| http://linked.open...cetTvurcuVysledku
| |
| http://linked.open...vavai/riv/projekt
| |
| http://linked.open...UplatneniVysledku
| |
| http://linked.open...v/svazekPeriodika
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| http://linked.open...iv/tvurceVysledku
| - Wünsch, Richard
- Gawryszczak, A.
- Klahr, H.
- Rózycka, M.
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| http://linked.open...n/vavai/riv/zamer
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| issn
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| number of pages
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