Global spiral modes in star-forming gravitating disks

Autor(en)

Vladimir I. Korchagin, Christian Theis

Abstrakt

Using 2D nonlinear simulations, we study the generation and nonlinear evolution of spiral structure in a star-forming multi-component gravitating disk. We confirm in agreement with previous studies the destabilizing role of a cold gaseous component and extend this conclusion for multi-component star-forming disks exchanging mass and momentum between its components. We show that the spiral structure growing on a non-stationary multi-phase background reaches its saturation in a similar manner like the one-component disks. The spiral structure survives even if most of the gas is transformed into stellar remnants of larger velocity dispersion.

Organisation(en)

Institut für Astrophysik

Externe Organisation(en)

Southern Federal University

Journal

Astronomy & Astrophysics

Band

347

Seiten

442-454

Anzahl der Seiten

13

ISSN

0004-6361

Publikationsdatum

1999

Peer-reviewed

Ja

ÖFOS 2012

103003 Astronomie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/global-spiral-modes-in-starforming-gravitating-disks(6e115d88-cd74-46ac-bb72-30ec32a3eacc).html