Tomasz Nowakowski is a member of the physics.org community.
The detection of a new polar ring galaxy was made possible by the data obtained with the telescope. There was a paper published on the arXiv pre-print server.
The so-called polar ring galaxies (PRGs) are systems composed of an S0 like galaxy and a polar ring which remain separate for billions of years. The outer polar rings are aligned with the major axis of the central host galaxy.
More than 400 PRG candidates have been discovered to date, but only a small number have been confirmed as real polar ring galaxies.
In order to expand the current short list of confirmed PRGs, a team of astronomer led by Minoru Nishimura of the Open University of Japan has conducted a detailed study of a sample. The new PRG candidate was identified as SDSS J095351.58+012036.
A new PRG candidate has been found during the course of this search. The researchers wrote in the paper that the galaxy is located at the edge of the survey.
In 2000 J0953 was first identified by the SDSS. It has a photometric redshift of 0.2, but no spectroscopic observations of J0953 have been done yet.
The study states that J0953 has a stellar mass of 38.6 billion solar mass and a star formation rate of 2.66 solar mass per year. The stellar mass of the host galaxy was found to be 26.18 and 4.23 billion solar mass. The distance between the host galaxy and the polar structure was found to be 2.12 arcsseconds.
The polar ring structure of J0953 seems to be almost parallel to the disk of its host galaxy, according to the astronomer. The polar structure is blue and younger than the host galaxy, as reported by them.
It was found that the Sérsic index of the host galaxy is 2.94 which suggests that it has an elliptical structure. There is a chance that the host galaxy is a disk galaxy.
The authors of the study said that more observations of J0953 should be done to confirm its PRG nature. It is necessary to further investigate the properties of the host and polar structures.
More information: Minoru Nishimura, Kazuya Matsubayashi, Takashi Murayama, Yoshiaki Taniguchi, A New Polar Ring Galaxy Discovered in the COSMOS Field. arXiv:2208.12388v1 [astro-ph.GA], arxiv.org/abs/2208.12388There is a science network.
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