NGC 5591
| NGC 5591 | |
|---|---|
 NGC 5591 is the galaxy in the center of the image. Image by SDSS | |
| Observation data (J2000 epoch) | |
| Constellation | Boötes |
| Right ascension | 14h 22m 32s |
| Declination | +13° 41' 01" |
| Redshift | 0.0256[1] |
| Helio radial velocity | 7,541 ± 27 (NGC 5591 NED 1)[1] 7,642 ± 27 (NGC 5591 NED 2) |
| Distance | 540 Million Light years |
| Apparent magnitude (V) | 14.5 |
| Characteristics | |
| Type | Interacting galaxy |
| Size | ~150,000 ly |
| Apparent size (V) | 1.3′ × 0.6′[1] |
| Other designations | |
| UGC 9207, MCG+02-37-005, PGC 51368 | |
NGC 5591 is a large spiral galaxy located in the constellation Boötes. Its velocity relative to the cosmic microwave background is 7902±18 km/s, corresponding to a Hubble distance of 380 ± 27 Mly (116.6 ± 8.2 Mpc).[1] NGC 5591 was discovered by the American astronomer Lewis Swift in 1886.
NGC 5591 exhibits a broad H I line.[1] According to the SIMBAD database, NGC 5591 is a radio galaxy.[2] NGC 5591 is a galaxy whose nucleus is bright in the ultraviolet. It is listed in the Markarian catalog under the designation Mrk 809 (MK 809).[3]
In fact, this galaxy is a pair of galaxies[1] in gravitational interaction, consisting of NGC 5591 and PGC 93125. However, Swift’s description of it (very faint, small, and round) suggests that he observed only NGC 5591. At a distance of 379.2 ± 26.5 Mly (116.27 ± 8.14 Mpc),[4] PGC 93125 is therefore considered a companion galaxy rather than an object in the NGC.[5]
NGC 5587
NGC 5587 is a galaxy located near the interacting pair, but it is much closer than the other two galaxies. NGC 5587 is a Lenticular Galaxy with dust lanes.
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "NGC 5591". NASA/IPAC Extragalactic Database.
- ↑ "SIMBAD, NGC 5591 -- Radio Galaxy". SIMBAD. Retrieved 27 November 2021.
- ↑ "Data from the "Revised NGC and IC Catalog" by Wolfgang Steinicke, NGC 5500 to 5599". astrovalleyfield.com (in français). Retrieved 6 January 2024.
- ↑ "Results for object NGC 5591 NED02 (PGC 93125)". NASA/IPAC Extragalactic Database. Retrieved 11 April 2023.
- ↑ Seligman, Courtney. "Celestial Atlas Table of Contents, NGC 5591". Celestial Atlas. Retrieved 28 November 2021.
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