2009/06/23 by V. Lora, A. C. Raga, A. Esquivel · 2 citations
Physics and Astronomy · #Accretion (finance) #Accretion disc #Angular momentum #Astronomy and Astrophysical Research #Astrophysical Phenomena and Observations #Astrophysics and Star Formation Studies #Jet (fluid) #Perpendicular #Photon #Radiation #Stars #astro-ph.SR
paper · pdf · doi:10.1051/0004-6361/200912238
6 pages, 7 figures, accepted in Astronomy and Astrophysics
arxiv created 2009/06/23 · openalex publication_date 2009/06/23 · arxiv updated 2015/05/13 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
<i>Aims. <i/>The radiation from newly born stars photoevaporates their parental neutral cloud, leading to the formation of dense clumps that will eventually form stars.<i>Methods. <i/>We present 3D simulations of the interaction of a neutral cloud with an external ionising radiation field, and compute the angular momenta of these collapsing clumps.<i>Results. <i/>The angular momenta of these collapsing clumps show that they have preferential orientations mostly perpendicular to the direction of the incident ionising photon field. Therefore, the axes of the jet systems that will be eventually ejected (from the star + accretion disk systems that will form) will be oriented approximately perpendicular to the direction to the photoionising source.