Tag Archives: Physical Revew E

Formation of disk galaxies with long-lived and non-stationary spiral arms

This work represents a development of the study of the collapses of purely self-gravitating systems  (see https://physics.aps.org/articles/v12/s19) to the case in which a dissipational gas component is also present. These latter systems show much richer morphological and kinematical structures that may have important observational implications to understand the kinematic and dynamics of the Milky Way as revealed by ongoing surveys such as the Gaia Mission. 

 by Francesco Sylos Labini, Luis Diego Pinto, Roberto Capuzzo-Dolcetta 

Continue reading Formation of disk galaxies with long-lived and non-stationary spiral arms

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Spiral galaxies are well-known astrophysical structures, but how they form is not fully understood. This paper describes simulations showing that they could be transient, nonequilibrium structures originating from the collapse of clouds of matter interacting solely through self-gravity.

Schermata 2019-02-15 alle 13.31.21