4.7 Article

Disc instabilities and semi-analytic modelling of galaxy formation

Journal

MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
Volume 390, Issue 1, Pages L69-L72

Publisher

OXFORD UNIV PRESS
DOI: 10.1111/j.1745-3933.2008.00541.x

Keywords

methods: numerical; galaxies: evolution; galaxies: haloes; galaxies: kinematics and dynamics; galaxies: structure

Funding

  1. [ANR-06-BLAN-0172]

Ask authors/readers for more resources

The Efstathiou, Lake and Negroponte (1982) criterion cannot distinguish bar stable from bar unstable discs and thus should not be used in semi-analytic galaxy formation simulations. I discuss the reasons for this, illustrate it with examples and point out shortcomings in the recipes used for spheroid formation. I propose an alternative, although much less straightforward, possibility.

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