GRAVITATIONAL FRAGMENTATION IN GALAXY MERGERS: A STABILITY CRITERION
GRAVITATIONAL FRAGMENTATION.pdf (1.291Mb)Abstract
We study the gravitational stability of gaseous streams in the complex environment of a galaxy merger, because
mergers are known to be places of ongoing massive cluster formation and bursts of star formation. We find an
analytic stability parameter for the case of gaseous streams orbiting around the merger remnant. We test our
stability criterion using hydrodynamic simulations of galaxy mergers and obtain satisfactory results. We find that
our criterion successfully predicts the streams that will be gravitationally unstable to fragmentation into clumps.
General note
Artículo de publicación ISI.
Patrocinador
A.E. acknowledges partial support from the Center for
Astrophysics and Associated Technologies CATA (PFB 06)
and Anillo de Ciencia y Tecnolog´ıa ACT1101. F.B. and
L.d.V. acknowledge support from Programa Nacional de Becas
de Postgrado (Grant D-22100632 and Grant D-21090518).
The simulations were performed using the HPC clusters
Markarian (FONDECYT 11090216), Geryon (PFB 06), and
Levque (ECM-02).
Identifier
URI: https://repositorio.uchile.cl/handle/2250/126325
DOI: DOI: 10.1088/0004-637X/763/1/39
Quote Item
The Astrophysical Journal, 763:39 (7pp), 2013 January 20
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