HINORA, a method for detecting ring-like structures in 3D point distributions I: application to the Local Volume Galaxy catalogue

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Main Authors: Olex, Edward, Knebe, Alexander, Libeskind, Noam I., Makarov, Dmitry I., Gottlöber, Stefan
Format: Preprint
Published: 2024
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_version_ 1866913271307567104
author Olex, Edward
Knebe, Alexander
Libeskind, Noam I.
Makarov, Dmitry I.
Gottlöber, Stefan
author_facet Olex, Edward
Knebe, Alexander
Libeskind, Noam I.
Makarov, Dmitry I.
Gottlöber, Stefan
contents We present a new method - called HINORA (HIgh-NOise RANdom SAmple Consensus) - for the identification of regular structures in 3D point distributions. Motivated by the possible existence of the so called Council of Giants, i.e. a ring of twelve massive galaxies surrounding the Local Group in the Local Sheet with a radius of 3.75 Mpc, we apply HINORA to the Local Volume Galaxy catalogue confirming its existence. When varying the lower limit of K-band luminosity of the galaxy entering the catalogue, we further report on the existence of another ring-like structure in the Local Volume that now contains the Milky Way and M31. However, this newly found structure is dominated by low-mass (satellite) galaxies. While we here simply present the novel method as well as its first application to observational data, follow-up work using numerical simulations of cosmic structure formation shall shed light into the origin of such regular patterns in the galaxy distribution. Further, the method is equally suited to identify similar (or even different) structures in various kinds of astrophysical data (e.g. locating the actual 'baryonic-acoustic oscillation spheres' in galaxy redshift surveys).
format Preprint
id arxiv_https___arxiv_org_abs_2403_06187
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle HINORA, a method for detecting ring-like structures in 3D point distributions I: application to the Local Volume Galaxy catalogue
Olex, Edward
Knebe, Alexander
Libeskind, Noam I.
Makarov, Dmitry I.
Gottlöber, Stefan
Cosmology and Nongalactic Astrophysics
Astrophysics of Galaxies
Computational Physics
Data Analysis, Statistics and Probability
Space Physics
We present a new method - called HINORA (HIgh-NOise RANdom SAmple Consensus) - for the identification of regular structures in 3D point distributions. Motivated by the possible existence of the so called Council of Giants, i.e. a ring of twelve massive galaxies surrounding the Local Group in the Local Sheet with a radius of 3.75 Mpc, we apply HINORA to the Local Volume Galaxy catalogue confirming its existence. When varying the lower limit of K-band luminosity of the galaxy entering the catalogue, we further report on the existence of another ring-like structure in the Local Volume that now contains the Milky Way and M31. However, this newly found structure is dominated by low-mass (satellite) galaxies. While we here simply present the novel method as well as its first application to observational data, follow-up work using numerical simulations of cosmic structure formation shall shed light into the origin of such regular patterns in the galaxy distribution. Further, the method is equally suited to identify similar (or even different) structures in various kinds of astrophysical data (e.g. locating the actual 'baryonic-acoustic oscillation spheres' in galaxy redshift surveys).
title HINORA, a method for detecting ring-like structures in 3D point distributions I: application to the Local Volume Galaxy catalogue
topic Cosmology and Nongalactic Astrophysics
Astrophysics of Galaxies
Computational Physics
Data Analysis, Statistics and Probability
Space Physics
url https://arxiv.org/abs/2403.06187