Polar rings and the 3D-shape of dark matter
Francoise Combes (Obs-Paris, LERMA)
TL;DR
This paper reviews polar ring galaxies to better understand the three-dimensional shape of dark matter haloes, addressing previous uncertainties and establishing criteria for ideal systems to advance research.
Contribution
It provides a comprehensive review of polar ring galaxies, defines criteria for ideal systems, and aims to clarify the dark matter halo shape through improved observational strategies.
Findings
Reviewed existing data on PRGs
Defined criteria for ideal PRG systems
Aims to clarify dark matter halo shapes
Abstract
Polar ring galaxies (PRG) are unique to give insight on the 3D-shape of dark matter haloes. Some caveats have prevented to draw clear conclusions in previous works. Also the formation mechanisms need to be well known. All available information on the topic is reviewed, and criteria are defined for an ideal PRG system, in the hope of removing the ambiguities and make progress in the domain.
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Taxonomy
TopicsGalaxies: Formation, Evolution, Phenomena · Astronomy and Astrophysical Research · Scientific Research and Discoveries