SDSS J1239+5314 also known as SDSS J123915.40+531414.6, is a Type 1 Seyfert galaxy located in the constellation of Ursa Major. The redshift of the galaxy is (z) 0.201 and it was first discovered by astronomers in June 2010, whom they classified a double-peaked profile active galactic nucleus (AGN).
Description SDSS J1239+5314 is categorized as a Type 1 AGN. It is also a galaxy merger with the two nuclei estimated to be have a physical separation of 4.1 kiloparsecs away from each other. The total K-band magnitudes of the components are 14.4 and 14.8 respectively. The total rest frame radio luminosity at 5 GHz frequencies is estimated to be 24.1 W Hz−1. Observations made in March 2011, showed it has a Fanaroff-Riley Type II morphology with a faint radio core. The total integrated flux density of the source is found to be 23.11 mJy. The star formation is estimated to be 6.013.64.2 per year while the total stellar mass is 11.810.530.59 .
A study published in 2015 has found there are two emission components present with the separation approximately around 1.3 kiloparsecs. When observed, the blueshifted component has a stellar bulge that is coincident with it, while the redshifted component does not. There is also another emission component present with a larger distance of 3.98 kiloparsecs and coincident with the stellar bulge of the southwest nucleus.
In 2022, the galaxy was found to be a confirmed X-shaped winged radio galaxy with the radio lobes being aligned from northeast to southwest direction. The position angle between the lobes is estimated to be 79°. Evidence also found the wing feature on southeast side is much longer compared to the northwestern wing.
References
External links
SDSS J1239+5314 on SIMBAD