Collisions of supersonic clouds

0360929 - ASÚ 2012 RIV GB eng C - Conference Paper (international conference)
McLeod, Andrew - Palouš, Jan - Whitworth, A.
Collisions of supersonic clouds.
Computational Star Formation. Cambridge: Cambridge University Press, 2011 - (Alves, J.), s. 355-358. IAU Symposium Proceedings Series, IAU S270. ISBN 9780521766432. ISSN 1743-9213.
[Symposium of the International Astronomical Union /270./. Barcelona (ES), 31.05.2010-04.06.2010]
Institutional research plan: CEZ:AV0Z10030501
Keywords : instabilities * shock waves * clouds stars
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics

We present simulations of supersonic collisions between molecular clouds of mass 500 M(sun) and radius 2.24 pc. The simulations are performed with the SEREN SPH code. The code treats the energy equation and the associated transport of heating and cooling radiation. The formation of protostars is captured by introducing sink particles. Low velocity collisions form a shock-compressed layer which fragments to form stars. For high-velocity collisions, υrel gt or eql 5 km s−1, the non-linear thin shell instability strongly disrupts the shock-compressed layer, and may inhibit the formation of stars.
Permanent Link: http://hdl.handle.net/11104/0198368