The New General Catalogue of Nebulae and Clusters of Stars (abbreviated as NGC) is a catalogue of deep-sky objects compiled by John Louis Emil Dreyer in 1888. The NGC contains 7,840 objects, known as the NGC objects. It is one of the largest comprehensive catalogues, as it includes all types of deep space objects, including galaxies, star clusters, emission nebulae and absorption nebulae.
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NGC 5532
NGC 5532 is an elliptical galaxy located in the constellation Boötes. It is located at a distance of about 250 million light years from Earth, which, given its apparent dimensions, means that NGC 5532 is about 110,000 light years across. It was discovered by William Herschel on March 15, 1784. It is a Fanaroff–Riley type 1 (FR1) radio galaxy. NGC 5532 is an elliptical galaxy located in a galaxy group. In the centre of the galaxy lies a warped disk, while the isophotes display boxiness and the centre of the galaxy doesn't coincide with the isophotal centre. The core appears obstructed in X-rays, with a column density of (1.0±0.5)×1022 cm-2, which is considered high for a FR1 galaxy. In the centre of the galaxy lies a supermassive black hole whose mass is estimated to be 108.8 (630 millions) M☉ based on the M–sigma relation. Two straight radio jets emerge from the galaxy core and form sharp edged lobes that appear to engulf the jets, although this could be a projection effect. The jets are typical of a Fanaroff–Riley type 1 radio galaxy, with faint bases that brighten abruptly 2.7 arcseconds from the nucleus and then the brightness gets lower at the distance from the core increases. The jet appears moving with relativistic speeds, 0.8 times the speed of light at the start of the jet. The northern jet has been observed in X-rays by the Chandra X-ray Observatory, with emission detected at distances between 2 and 10 arcseconds from the core. NGC 5532 is located in a galaxy group that also includes the galaxy NGC 5531. NGC 5532 forms a pair with lenticular galaxy NGC 5532A, which lies at a distance of about 16 kpc. 21 galaxies have been as members of the group, lying within one megaparsec from NGC 5532. Two supernovae have been observed in NGC 5532: SN 2007ao (type Ia-p mag. 17.7), and SN 2023omo (type Ia-91bg-like, mag. 18.3).
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Wikipedia Page: NGC 5532
NGC 5532 at In-The-Sky website