TY - JOUR

T1 - The occurrence rate of galaxies with polar structures may be significantly underestimated

AU - Мосенков, Александр Владимирович

AU - Bahr, S.K.H.

AU - Решетников, Владимир Петрович

AU - Shakespear, Z.

AU - Смирнов, Даниил Владимирович

PY - 2024/1/23

Y1 - 2024/1/23

N2 - Polar-ring galaxies are photometrically and kinematically decoupled systems which are highly inclined to the major axis of the host galaxy. These objects have been explored since the 1970s, but the rarity of these systems has made such study difficult. We examine a sample of over 18,362 galaxies from the Sloan Digital Sky Survey (SDSS) Stripe 82 for the presence of galaxies with polar structures. Using deep SDSS Stripe 82, DESI Legacy Imaging Surveys, and Hyper Suprime-Cam Subaru Strategic Program, we select 53 good candidate galaxies with photometrically decoupled polar rings, 9 galaxies with polar halos, and 34 possibly forming polar-ring galaxies, versus 13 polar-ring candidates previously mentioned in the literature for the Stripe 82. Our results suggest that the occurrence rate of galaxies with polar structures may be significantly underestimated, as revealed by the deep observations, and may amount to 1-3% of non-dwarf galaxies.

AB - Polar-ring galaxies are photometrically and kinematically decoupled systems which are highly inclined to the major axis of the host galaxy. These objects have been explored since the 1970s, but the rarity of these systems has made such study difficult. We examine a sample of over 18,362 galaxies from the Sloan Digital Sky Survey (SDSS) Stripe 82 for the presence of galaxies with polar structures. Using deep SDSS Stripe 82, DESI Legacy Imaging Surveys, and Hyper Suprime-Cam Subaru Strategic Program, we select 53 good candidate galaxies with photometrically decoupled polar rings, 9 galaxies with polar halos, and 34 possibly forming polar-ring galaxies, versus 13 polar-ring candidates previously mentioned in the literature for the Stripe 82. Our results suggest that the occurrence rate of galaxies with polar structures may be significantly underestimated, as revealed by the deep observations, and may amount to 1-3% of non-dwarf galaxies.

UR - http://arxiv.org/abs/2311.03529

UR - https://www.mendeley.com/catalogue/270f47e5-7a4e-3347-9bfe-91b682f79fad/

U2 - 10.1051/0004-6361/202348494

DO - 10.1051/0004-6361/202348494

M3 - Article

VL - 681

JO - ASTRONOMY & ASTROPHYSICS

JF - ASTRONOMY & ASTROPHYSICS

SN - 0004-6361

M1 - L15

ER -