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NGC 5221
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| NGC 5221 | |
|---|---|
 NGC 5221 imaged by Legacy Surveys | |
| Observation data (J2000 epoch) | |
| Constellation | Virgo |
| Right ascension | 13h 34m 55.9030s[1] |
| Declination | +13° 49′ 57.055″[1] |
| Redshift | 0.023279±0.0000270[1] |
| Heliocentric radial velocity | 6,979±8 km/s[1] |
| Distance | 317.31 ± 5.34 Mly (97.288 ± 1.638 Mpc)[1] |
| Apparent magnitude (V) | 13.80[1] |
| Characteristics | |
| Type | Sb[1] |
| Size | ~276,900 ly (84.90 kpc) (estimated)[1] |
| Apparent size (V) | 2.4′ × 0.8′[1] |
| Other designations | |
| IRAS F13324+1405, 2MASX J13345590+1349571, Arp 288 NED03, UGC 8559, MCG +02-35-006, PGC 47869, CGCG 073-040, VV 315b[1] | |
NGC 5221 is a spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 7,258±21 km/s, which corresponds to a Hubble distance of 349.2 ± 24.5 Mly (107.06 ± 7.50 Mpc).[1] However, eight non-redshift measurements give a closer mean distance of 317.31 ± 5.34 Mly (97.288 ± 1.638 Mpc).[2] It was discovered by German-British astronomer William Herschel on 12 April 1784.[3]
NGC 5221 is a radio galaxy, i.e. it has giant regions of radio emission extending well beyond its visible structure.[4][5]
Arp 288
[edit]
NGC 5221 together with NGC 5222 and PGC 93122 are catalogued as Arp 288 by Halton Arp in his Atlas of Peculiar Galaxies, in the category of "wind effects."[6] The group is described by Arp as "Streamers in both directions from edge of spiral." The three galaxies are also listed as VV 315 in the Vorontsov-Vel'yaminov Interacting Galaxies catalogue.
Supernova
[edit]One supernova has been observed in NGC 5221:
- SN 2016bln (Type Ia-91T, mag. 19.2) was discovered by the Palomar Transient Factory on 4 April 2016.[7][8][9] At the time, it was described as "one of the earliest detections of an over-luminous SN Ia made to date."[8]
Image gallery
[edit]-
NGC 5221 imaged by the Hubble Space Telescope
See also
[edit]References
[edit]- ^ a b c d e f g h i j k "Results for object NGC 5221". NASA/IPAC Extragalactic Database. NASA and Caltech. Retrieved 12 February 2026.
- ^ "Distance Results for NGC 5221". NASA/IPAC EXTRAGALACTIC DATABASE. NASA. Retrieved 12 February 2026.
- ^ Seligman, Courtney. "New General Catalogue Objects: NGC 5221". Celestial Atlas. Retrieved 12 February 2026.
- ^ Lin, Yen-Ting; Huang, Hung-Jin; Chen, Yen-Chi (2018). "An Analysis Framework for Understanding the Origin of Nuclear Activity in Low-power Radio Galaxies". The Astronomical Journal. 155 (5): 188. arXiv:1803.02482. Bibcode:2018AJ....155..188L. doi:10.3847/1538-3881/aab5b4.
- ^ "NGC 5221". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 12 February 2026.
- ^ Arp, Halton (1966). Atlas of Peculiar Galaxies. Pasadena, California: California Institute of Technology. Retrieved 5 January 2010. (online version, including Arp's original tabular data, and PDF link)
- ^ Miller, A. A.; Laher, R.; Masci, F.; Surace, J.; Rebbapragada, U.; Bue, B.; Doran, G.; Bellm, E.; Cao, Y.; Kasliwal, M.; Kulkarni, S. (2016). "IPTF Discovery of a Young Transient in a Tidal Tail of NGC 5221". The Astronomer's Telegram. 8907: 1. Bibcode:2016ATel.8907....1M.
- ^ a b Cenko, S. B.; Cao, Y.; Kasliwal, M.; Miller, A. A.; Fremling, C.; West, M.; Gregg, M.; Kulkarni, S. R. (2016). "DCT and Gemini Spectroscopic Classification of AT 2016bln (=iPTF 16abc)". The Astronomer's Telegram. 8909: 1. Bibcode:2016ATel.8909....1C.
- ^ "SN 2016bln". Transient Name Server. IAU. Retrieved 12 February 2026.
External links
[edit]
Media related to NGC 5221 at Wikimedia Commons- NGC 5221 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
