Dark matter distribution in superthin galaxies

ABSTRACT This paper presents a new method of calculating dark matter density profiles for superthin axial symmetric galaxies without a bulge. This method is based on a simple physical model, which includes an infinitely thin galactic disc immersed in a spherically symmetric halo of dark matter. To o...

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Veröffentlicht in:Monthly notices of the Royal Astronomical Society 2020-07, Vol.495 (4), p.3722-3726
1. Verfasser: Kalashnikov, Ilia
Format: Artikel
Sprache:eng
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Zusammenfassung:ABSTRACT This paper presents a new method of calculating dark matter density profiles for superthin axial symmetric galaxies without a bulge. This method is based on a simple physical model, which includes an infinitely thin galactic disc immersed in a spherically symmetric halo of dark matter. To obtain the desired distribution density, it suffices to know a distribution of visible matter surface density in a galaxy and a dependence of angular velocity on the radius. As a byproduct, the well-known expression, which reproduces surface density of a superthin galaxy expressed through a rotation law, was obtained.
ISSN:0035-8711
1365-2966
DOI:10.1093/mnras/staa1427