By analyzing the data from the Dark Energy Camera Legacy Survey (DECaLS), astronomers from the Christ University in Bangalore, India, have serendipitously discovered a new ring galaxy, which received designation DES J024008.08-551047.5 and may belong to the rare class of polar ring galaxies. The finding was reported in a paper published August 29 on the pre-print server arXiv.
led by Akhil Krishna has detected another PRG candidate. The detection of DES J024008.08-551047.5 was made during visual observations of optical imaging data from DECaLS.
The study found that DJ0240 has a ring positioned almost perpendicular to the host galaxy. The position angle of the ring is about 80 degrees, and the position angle of the host is about 10 degrees, what suggests that the two components are nearly orthogonal to each other. The distance to the galaxy is estimated to be some 1.8 billion light years.
The researchers found that the ring of DJ0240 has a relatively small Sersic index, further supporting the PRG classification of this galaxy. They added that the measured effective radii of the galaxy's components is comparable with those of other PRGs.
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