Manuscript for upcoming polar ring catalogue, under construction to be in literature

A Catalogue of Known and New Polar Ring Galaxies + Rejected Objects

ABSTRACT: We present a new catalogue of polar-ringed galaxies from various sky surveys, including
a list of rejected sources based on visual inspection. The data of these polar ring galaxies are
based on various surveys and polar ring catalogues. This paper documents a list of new polar ring
galaxies along with a list of rejected sources. Data from these objects are primarily found in the discussion, the George Stein Galaxy finder, and the Galaxy Zoo forums.

INTRODUCTION: Polar ring galaxies are an uncommon classification of galaxies, basically a host
galaxy and a ring that orbits in a nearly polar or orthogonal plane. (1990AJ…100.1489W)
These objects are morphologically classified as type-S0 or lenticular galaxies, (2015MNRAS.447.2287R) orbited around a ring of younger stars. (2002A&A…391…117I) Polar ring galaxies are thought to be formed by past interactions or accretions with another galaxy, (2003A&A…401…817B; 1997A&A…325…933R) and cold accretion from intergalactic medium filaments. (2006ApJ…636L…25M, 2008ApJ…689…678B) Polar rings can widely vary in morphology, like the form of a narrow ring, a wide annulus, a spindle, or even an inner polar structure. (2014ASPC…486…39I) Currently, more than 400 polar-ring galaxy candidates have been found as of early 2024. (1990AJ…100.1489W; 2019MNRAS.483.1470R) Although, over a sample of these galaxies are confirmed by using spectroscopic observations. (1990AJ…100.1489W;2011AstL…37…171R). The first polar ring galaxy, known as NGC 4650A, (1967ZA…67…306S) is a peculiar polar ringed lenticular galaxy. Then, NGC 2685, (1978AJ…83.1360S), and two new polar ring galaxies, A0136-0801, and ESO 415-G026.
(1983AJ…88…909S) These mentioned objects are classified as peculiar lenticular galaxies.
In 1978, the first elliptical galaxies were identified, being Centaurus A, NGC 5363, NGC 1947,
and Cygnus A, while the polar-ring S0 galaxies NGC 2685 and NGC 4650A were at that time indicated as resulting from similar formation processes. (1978ApJ…226L.115B) In 1990, an atlas of 157 polar ring galaxies and pr candidates by identified by morphological classification. 1990AJ…100.1489W) Among them, only six objects already had a kinematic confirmation, and 27 galaxies were included in the category of “good” candidates. In 2011, observations using the Sloan Digital Sky Survey counted an additional 70 “best” candidates (2011MNRAS.418…244M) and the Galaxy Zoo citizen science project identified 16 new candidate polar ring galaxies. (2012MNRAS.422.2386F) and one more polar ring galaxy
candidate was identified by the DESI Legacy Imaging Surveys. (2024A&A…681A…35A).


Hi, I am Akhil from India. I am very excited and interested in the proposed work. The last reference you provided was published by me and my team. Thank you for referencing our work. I am very curious and enthusiastic about the possibility of collaborating on this project. Is there a chance we could discuss this further?


Hello. Thank you for answering your questions.

We are working on an upcoming catalog of polar-ring galaxies from various sky surveys, primarily from the DESI Legacy Surveys data release 10. The New Polar-ring Atlas (NPA) currently has about 150 candidates, including known objects and rejected sources. I am hoping that this catalog will be published sometime between 2025 and 2026.

With new sky surveys coming out, the New Polar-ring Atlas catalog was constructed using the catalogs: Polar-Ring Catalogue by Whitmore et al. 1990 and the SDSS Polar Ring Catalogue by Moiseev et al. 2011, as well as the addition of some already referenced sources. Going over the catalog has some possible objects that we identified as not having a polar ring. Most of these we did find do not appear to have a polar ring. Next, we selected galaxies from the Galaxy Zoo project and the Polar-Ring Galaxies thread on the LegacySurvey discussion website. lastly, we selected unidentified galaxies using the George Stein Galaxy Finder for any additional candidates that have already not been refereed. our catalog is expected to reach an expected 300 candidates of these rare types of galaxies.

However, for me, I would love you to join and collaborate on our project. After all, it is great because it can lead to more innovation, efficient processes, and increased success. I also am in collaboration with a professor if any of these candidates look as if it’s good to be included in the catalog.

Anyway, thanks for your questions.



Thank you for your reply. Excited to collaborate and eager to delve deeper into details.