TY - JOUR

T1 - A multiwavelength study of spiral structure in galaxies. II. Spiral arms in deep optical observations

AU - Мосенков, Александр Владимирович

AU - Панасюк, Андрей Дмитриевич

AU - Turner, Savanah

AU - Bartier, Crystal-Lynn

AU - Скрябина, Мария Николаевна

AU - Марчук, Александр Александрович

AU - Савченко, Сергей Сергеевич

AU - Bergstedt, Jakob

AU - Решетников, Владимир Петрович

AU - Чугунов, Илья Владимирович

PY - 2024/2

Y1 - 2024/2

N2 - In this paper, we look to analyse the spiral features of grand-design, multiarmed, and flocculent spiral galaxies using deep optical imaging from DESI Legacy Imaging Surveys. We explore the resulting distributions of various characteristics of spiral structure beyond the optical radius, such as the distributions of azimuthal angle, the extent of spiral arms, and of the spiral arm widths for the aforementioned galaxy classes. We also compare the measured properties for isolated galaxies and galaxies in groups and clusters. We find that, on average, compared to multiarmed and flocculent spiral galaxies, the spiral arms of grand-design galaxies exhibit slightly larger azimuthal angles, greater extent, and larger widths in the periphery of the galaxy. Furthermore, on average, isolated galaxies tend to have slightly smaller widths of outer spiral arms compared to galaxies in tight environments, which is likely related to the tidally-induced mechanism for generating wider outer spiral arms. We also report that breaks of the disc surface brightness profiles are often related to the truncation of spiral arms in galaxies.

AB - In this paper, we look to analyse the spiral features of grand-design, multiarmed, and flocculent spiral galaxies using deep optical imaging from DESI Legacy Imaging Surveys. We explore the resulting distributions of various characteristics of spiral structure beyond the optical radius, such as the distributions of azimuthal angle, the extent of spiral arms, and of the spiral arm widths for the aforementioned galaxy classes. We also compare the measured properties for isolated galaxies and galaxies in groups and clusters. We find that, on average, compared to multiarmed and flocculent spiral galaxies, the spiral arms of grand-design galaxies exhibit slightly larger azimuthal angles, greater extent, and larger widths in the periphery of the galaxy. Furthermore, on average, isolated galaxies tend to have slightly smaller widths of outer spiral arms compared to galaxies in tight environments, which is likely related to the tidally-induced mechanism for generating wider outer spiral arms. We also report that breaks of the disc surface brightness profiles are often related to the truncation of spiral arms in galaxies.

UR - https://www.mendeley.com/catalogue/e41cf8e3-8b50-3820-91e6-d6514a7e8d5c/

U2 - 10.1093/mnras/stad3869

DO - 10.1093/mnras/stad3869

M3 - Article

VL - 527

SP - 10615

EP - 10631

JO - Monthly Notices of the Royal Astronomical Society

JF - Monthly Notices of the Royal Astronomical Society

SN - 0035-8711

IS - 4

ER -