NGC 5591 is a peculiar spiral galaxy, or more precisely an interacting galaxy pair,[citation needed] located in the constellation of Boötes, located around 540 million light years away. It was discovered by the American astronomer Lewis Swift in 1886. Its velocity relative to the cosmic microwave background is 7902±18 km/s, corresponding to a Hubble distance of 116.6±8.2 Mpc.[1]
Observations
In fact, this system is a pair of galaxies[1] in gravitational interaction consisting of NGC 5591 and PGC 93125. However, Swift’s description (very faint, small, and round) suggests that he observed only NGC 5591. At a distance of 116.27±8.14 Mpc, PGC 93125 is therefore considered a companion galaxy rather than an object in the NGC catalogue.[2]
NGC 5591 exhibits a broad H I line.[1] According to the SIMBAD database, NGC 5591 is classified as a radio galaxy.[3] NGC 5591 is a galaxy whose nucleus shines in the ultraviolet region of the spectrum. It is listed in the Markarian Catalogue under the designation Mrk 809 (MK 809).[4]
See also
References
- ^ a b c d e f “NGC 5591”. NASA/IPAC Extragalactic Database.
- ^ Seligman, Courtney. “Celestial Atlas Table of Contents, NGC 5591”. Celestial Atlas. Retrieved 28 November 2021.
- ^ “NGC 5591 – Radio Galaxy”. SIMBAD Astronomical Database. Centre de Données astronomiques de Strasbourg. Retrieved 27 November 2021.
- ^ “Data from the “Revised NGC and IC Catalog” by Wolfgang Steinicke, NGC 5500 to 5599″. astrovalleyfield.com (in French). Retrieved 6 January 2024.
