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The ring structures of disk galaxies are vital for understanding galaxy evolution and dynamics. However, due to the scarcity of ringed galaxies and challenges in their identification, traditional methods often struggle to efficiently obtain…

星系天体物理 · 物理学 2025-07-11 Jianzhen Chen , Zhijian Luo , Cheng Cheng , Jun Hou , Shaohua Zhang , Chenggang Shu

Morphological features in galaxies, like spiral arms, bars, rings, tidal tails etc. carry information about their structure, origin and evolution. It is therefore important to catalog and study such features and to correlate them with other…

星系天体物理 · 物理学 2025-03-06 Linn Abraham , Sheelu Abraham , Ajit K. Kembhavi , N. S. Philip , A. K. Aniyan , Sudhanshu Barway , Harish Kumar

Understanding the formation and evolution of ring galaxies, which possess an atypical ring-like structure, is crucial for advancing knowledge of black holes and galaxy dynamics. However, current catalogs of ring galaxies are limited, as…

星系天体物理 · 物理学 2024-10-08 Harish Krishnakumar , J. Bryce Kalmbach

Aims: We present a statistical analysis of different characteristics of ringed spiral galaxies with the aim of assessing the effects of rings on disk galaxy properties. Methods: We built a catalog of ringed galaxies from the Sloan Digital…

星系天体物理 · 物理学 2021-09-15 Julia Fernandez , Sol Alonso , Valeria Mesa , Fernanda Duplancic , Georgina Coldwell

We investigate the morphological and physical properties of ring galaxies residing within cosmic voids. Using void catalogs from VoidFinder, ring candidates identified via the Galaxy Zoo 2 decision tree, and morphological classifications…

星系天体物理 · 物理学 2026-04-14 Santosh Poudel , Binil Aryal

We report observations of 16 candidate polar ring galaxies (PRGs) identified by the Galaxy Zoo project in the Sloan Digital Sky Survey (SDSS) database. Deep images of five galaxies are available in the SDSS Stripe82 database, while to reach…

宇宙学与河外天体物理 · 物理学 2015-06-04 Ido Finkelman , S. J. Jose G. Funes , Noah Brosch

We present the data release for Galaxy Zoo 2 (GZ2), a citizen science project with more than 16 million morphological classifications of 304,122 galaxies drawn from the Sloan Digital Sky Survey. Morphology is a powerful probe for…

In order to understand the formation and subsequent evolution of galaxies one must first distinguish between the two main morphological classes of massive systems: spirals and early-type systems. This paper introduces a project, Galaxy Zoo,…

The classification of galaxies as spirals or ellipticals is a crucial task in understanding their formation and evolution. With the arrival of large-scale astronomical surveys, such as the Sloan Digital Sky Survey (SDSS), astronomers now…

计算机视觉与模式识别 · 计算机科学 2023-12-04 Anusha Guruprasad

We applied the image-based approach with a convolutional neural network model to the sample of low-redshifts galaxies with $-24^{m}<M_{r}<-19.4^{m}$ from the SDSS DR9. We divided it into two subsamples, SDSS DR9 galaxy dataset and Galaxy…

星系天体物理 · 物理学 2022-08-04 I. B. Vavilova , V. Khramtsov , D. V. Dobrycheva , M. Yu. Vasylenko , A. A. Elyiv , O. V. Melnyk

The morphological classification of galaxies provides vital physical information about the orbital motions of stars in galaxies, and correlates in interesting ways with star formation history, and other physical properties. Galaxy…

星系天体物理 · 物理学 2025-02-14 Karen Masters

A full ring is a form of galaxy morphology that is not associated with a specific stage on the Hubble sequence. Digital sky surveys can collect many millions of galaxy images, and therefore even rare forms of galaxies are expected to be…

星系天体物理 · 物理学 2019-11-27 Lior Shamir

Morphology is a powerful indicator of a galaxy's dynamical and merger history. It is strongly correlated with many physical parameters, including mass, star formation history and the distribution of mass. The Galaxy Zoo project collected…

The catalog of ringed galaxies was compiled through visual classification of synthetic images from the TNG50 simulation. Galaxies were selected based on specific criteria: a redshift range of $0.01 < z < 0.1$, stellar mass $M_\star >10^9…

星系天体物理 · 物理学 2024-11-28 Julia Fernandez , Emanuel Sillero , Sol Alonso , Patricia Tissera

Galaxy clusters constitute powerful cosmological probes thanks to comparisons between observed and simulated clusters. As such Virgo constitutes a formidable source for detailed observations facilitated by its proximity. However, the…

宇宙学与河外天体物理 · 物理学 2019-04-24 Jenny G. Sorce , Jérémy Blaizot , Yohan Dubois

The universe is composed of galaxies that have diverse shapes. Once the structure of a galaxy is determined, it is possible to obtain important information about its formation and evolution. Morphologically classifying galaxies means…

星系天体物理 · 物理学 2026-04-23 N. M. Cardoso , G. B. O. Schwarz , L. O. Dias , C. R. Bom , L. Sodré , C. Mendes de Oliveira

(Abridged) Galaxies with polar rings (PRGs) are a unique class of extragalactic objects allowing to investigate a wide range of problems, linked with the formation and evolution of galaxies, and to study the properties of their dark haloes.…

宇宙学与河外天体物理 · 物理学 2015-05-28 Alexei Moiseev , Ksenia Smirnova , Aleksandrina Smirnova , Vladimir Reshetnikov

Aims. We explore galaxies with ringed structures inhabiting poor and rich groups with the aim of assessing the effects of local density environments on ringed galaxy properties. Methods. We identified galaxies with inner, outer, nuclear,…

星系天体物理 · 物理学 2024-01-05 Julia Fernandez , . Sol Alonso , Valeria Mesa , Fernanda Duplancic

We present a catalog and imaging atlas of classical (collisional) RING galaxies distilled from the Arp-Madore Atlas of Southern Peculiar Galaxies and Associations and supplemented with other known RING galaxies from the published…

宇宙学与河外天体物理 · 物理学 2009-11-13 Barry F. Madore , Erica Nelson , Kristen Petrillo
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