Simulating the galactic system in interaction AM 2229-735 and the formation of its polar structure. (arXiv:1911.03595v1 [astro-ph.GA])
<a href="http://arxiv.org/find/astro-ph/1/au:+Quiroga_L/0/1/0/all/0/1">Luis F. Quiroga</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Munoz_Cuartas_J/0/1/0/all/0/1">Juan C. Muñoz-Cuartas</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Rodrigues_I/0/1/0/all/0/1">Irapuan Rodrigues</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Libeskind_N/0/1/0/all/0/1">Noam I. Libeskind</a>
We study the formation of polar ring galaxies via minor mergers. We used
N-body+hydrodynamics simulations to reproduce the dynamics of the observed
system AM 2229-735 that is a minor merger whose interaction signals are those
of a progenitor for a polar ring galaxy. We used the observational information
of the system to get initial conditions for the orbit and numerical
realisations of the galaxies to run the simulations. Our simulations reproduce
the global characteristics of interaction observed in the system such as arms
and a material bridge connecting the galaxies. As a merger remnant, we found a
quasi-stable and self gravitating planar tidal stream with dark matter, stars
and gas orbiting in a plane approximately perpendicular to the main galaxy disk
leading in the future to a polar ring galaxy. We studied the dynamical
conditions of the polar structure and found evidence suggesting that this kind
of merger remnant can settle down in a disk-like structure with isothermal
support, providing inspiring evidence about the process of formation of
galactic disks and providing a potentially independent scenario to study the
presence of dark matter in this kind of galaxies.
We study the formation of polar ring galaxies via minor mergers. We used
N-body+hydrodynamics simulations to reproduce the dynamics of the observed
system AM 2229-735 that is a minor merger whose interaction signals are those
of a progenitor for a polar ring galaxy. We used the observational information
of the system to get initial conditions for the orbit and numerical
realisations of the galaxies to run the simulations. Our simulations reproduce
the global characteristics of interaction observed in the system such as arms
and a material bridge connecting the galaxies. As a merger remnant, we found a
quasi-stable and self gravitating planar tidal stream with dark matter, stars
and gas orbiting in a plane approximately perpendicular to the main galaxy disk
leading in the future to a polar ring galaxy. We studied the dynamical
conditions of the polar structure and found evidence suggesting that this kind
of merger remnant can settle down in a disk-like structure with isothermal
support, providing inspiring evidence about the process of formation of
galactic disks and providing a potentially independent scenario to study the
presence of dark matter in this kind of galaxies.
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