Výsledky vyhledávání

Dissertation/ Thesis

Hydrodynamical simulations of interstellar gas : from star-forming clouds to spiral arms

Autor: Gittins, D.

This thesis presents numerical investigations of interstellar gas under various conditions. Discrete, pressure-bounded gas ‘cloudlets’ are modelled with Smoothed Particle Hydrodynamics (SPH) which is shown to reproduce accurately their properties

Externí odkaz: http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.599430

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Star formation bursts in isolated spiral galaxies

Autor: Clarke, C., Gittins, D.

Publikováno v: Mon.Not.Roy.Astron.Soc.371:530-536,2006

We study the response of the gaseous component of a galactic disc to the time dependent potential generated by N-body simulations of a spiral galaxy. The results show significant variation of the spiral structure of the gas which might be expected to

Externí odkaz: http://arxiv.org/abs/astro-ph/0607019

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Constraining corotation from shocks in tightly-wound spiral galaxies

Autor: Gittins, D., Clarke, C.

Publikováno v: Mon.Not.Roy.Astron.Soc. 349 (2004) 909

We present a new method for estimating the corotation radius in tightly wound spiral galaxies, through analysis of the radial variation of the offset between arms traced by the potential (P-arms) and those traced by dust (D-arms). We have verified th

Externí odkaz: http://arxiv.org/abs/astro-ph/0312562

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