About: Clumps and triggered star formation in ionized molecular clouds

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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
Description	Infrared shells and bubbles are ubiquitous in the Galaxy and can generally be associated with H II regions formed around young, massive stars. In this paper, we use high-resolution 3D SPH simulations to explore the effect of a single O7 star emitting photons at 10(49) s(-1) and located at the centre of a molecular cloud with mass 10(4) M-circle dot and radius 6.4 pc; the internal structure of the cloud is characterized by its fractal dimension, D (with 2.0 <= D <= 2.8), and the variance of its (lognormal) density distribution, sigma(2)(O) (with 0.36 <= sigma(2)(O) <= 1.42). Our study focuses on the morphology of the swept-up cold gas and the distribution and statistics of the resulting star formation. If the fractal dimension is low, the border of the H II region is dominated by extended shell-like structures, and these break up into a small number of massive high-density clumps which then spawn star clusters; star formation occurs relatively quickly, and delivers somewhat higher stellar masses. Infrared shells and bubbles are ubiquitous in the Galaxy and can generally be associated with H II regions formed around young, massive stars. In this paper, we use high-resolution 3D SPH simulations to explore the effect of a single O7 star emitting photons at 10(49) s(-1) and located at the centre of a molecular cloud with mass 10(4) M-circle dot and radius 6.4 pc; the internal structure of the cloud is characterized by its fractal dimension, D (with 2.0 <= D <= 2.8), and the variance of its (lognormal) density distribution, sigma(2)(O) (with 0.36 <= sigma(2)(O) <= 1.42). Our study focuses on the morphology of the swept-up cold gas and the distribution and statistics of the resulting star formation. If the fractal dimension is low, the border of the H II region is dominated by extended shell-like structures, and these break up into a small number of massive high-density clumps which then spawn star clusters; star formation occurs relatively quickly, and delivers somewhat higher stellar masses. (en)
Title	Clumps and triggered star formation in ionized molecular clouds Clumps and triggered star formation in ionized molecular clouds (en)
skos:prefLabel	Clumps and triggered star formation in ionized molecular clouds Clumps and triggered star formation in ionized molecular clouds (en)
skos:notation	RIV/67985815:_____/13:00423674!RIV14-GA0-67985815
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP209/12/1795)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Wünsch, Richard
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	Astronomický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	65759
http://linked.open...ai/riv/idVysledku	RIV/67985815:_____/13:00423674
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	hydrodynamics; stars formation; ISM bubbles (en)
http://linked.open.../riv/klicoveSlovo	ISM bubbles hydrodynamics stars formation
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[835841C24CCF]
http://linked.open...i/riv/nazevZdroje	Monthly Notices of the Royal Astronomical Society
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (xsd:int)
http://linked.open...vavai/riv/projekt	Star formation triggered by expanding shells
http://linked.open...UplatneniVysledku	2013
http://linked.open...v/svazekPeriodika	435
http://linked.open...iv/tvurceVysledku	Whitworth, A. Wünsch, Richard Hubber, D. A. Walch, S. Bisbas, T.
http://linked.open...ain/vavai/riv/wos	000325264600003
issn	0035-8711
number of pages	11 (xsd:int)
http://bibframe.org/vocab/doi	10.1093/mnras/stt1115

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