astro.wikisort.org - Galaxy
NGC 4490, also known as the Cocoon Galaxy, is a barred spiral galaxy in the constellation Canes Venatici. It lies at a distance of 25 million light years from Earth. It interacts with its smaller companion NGC 4485 and as a result is a starburst galaxy. NGC 4490 and NGC 4485 are collectively known in the Atlas of Peculiar Galaxies as Arp 269. NGC 4490 is located 3/4° northwest of beta Canum Venaticorum and with apparent visual magnitude 9.8, can be observed with 15x100 binoculars.[2] It is a member of the Herschel 400 Catalogue. It belongs in Canes Venatici galaxy cloud II.
| NGC 4490 | |
|---|---|
 NGC 4490 and satellite galaxy, NGC 4485 | |
| Observation data (J2000 epoch) | |
| Constellation | Canes Venatici |
| Right ascension | 12h 30m 36.2s[1] |
| Declination | 41° 38′ 38″[1] |
| Redshift | 565 ± 3 km/s[1] |
| Distance | 25.1 ± 5.0 Mly (7.7 ± 1.5 Mpc)[1] |
| Apparent magnitude (V) | 9.8 |
| Characteristics | |
| Type | SB(s)d pec [1] |
| Apparent size (V) | 6′.3 × 3′.1[1] |
| Other designations | |
| Arp 269, UGC 7651, PGC 41333[1] | |
It was discovered by William Herschel in 1788. Two supernovae have been observed in NGC 4490, SN 1982F, and type II-P SN 2008ax, with peak magnitude 13.0.[3][4]
Gallery
![Extreme tidal forces have carved out the shapes and properties of NGC 4490.[5]](//upload.wikimedia.org/wikipedia/commons/thumb/9/94/Result_of_a_galactic_crash.jpg/120px-Result_of_a_galactic_crash.jpg)
Extreme tidal forces have carved out the shapes and properties of NGC 4490.[5]
![Extreme tidal forces have carved out the shapes and properties of NGC 4490.[5]](http://upload.wikimedia.org/wikipedia/commons/9/94/Result_of_a_galactic_crash.jpg)
See also
- Barred spiral galaxy
- Canes Venatici (constellation)
References
- "NASA/IPAC Extragalactic Database". Results for NGC 4490. Retrieved 2016-01-18.
- Craig Crossen, Gerald Rhemann (2012). Sky Vistas: Astronomy for Binoculars and Richest-Field Telescopes. Springer Science+Business Media. p. 233. ISBN 978-3-7091-0626-6.
- List of Supernovae IAU Central Bureau for Astronomical Telegrams. Retrieved 29 December 2015.
- David Bishop. "Supernova 2008ax in NGC 4490". supernovae.net (International Supernovae Network). Archived from the original on 8 April 2010. Retrieved 7 June 2010.
- "Bursting with Starbirth". www.spacetelescope.org. Retrieved 28 September 2017.
External links
- NGC 4490 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
- SEDS
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 | This spiral galaxy article is a stub. You can help Wikipedia by expanding it. |
На других языках
[de] NGC 4490
NGC 4490 ist eine Balken-Spiralgalaxie vom Hubble-Typ SBcd mit ausgedehnten Sternentstehungsgebieten im Sternbild Jagdhunde am Nordsternhimmel. Sie ist schätzungsweise 27 Millionen Lichtjahre von der Milchstraße entfernt und hat einen Durchmesser von etwa 50.000 Lichtjahren. Gemeinsam mit NGC 4485 bildet sie das wechselwirkendes Galaxienpaar Arp 269 oder Holm 414, das durch einen sogenannten Gezeitenarm, der rund 24.000 Lichtjahre ins All ragt, verbunden wird.[4] Weiterhin gilt sie als Mitglied der NGC 4258-Gruppe (LGG 290).- [en] NGC 4490
[ru] NGC 4490
NGC 4490 (другие обозначения — UGC 7651, MCG 7-26-14, ZWG 216.8, KCPG 341B, ARP 269, VV 30, PGC 41333) — спиральная галактика в созвездии Гончих Псов. Находится на расстоянии около 35 миллионов световых лет от Солнца[5].Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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