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NGC 2768 is a lenticular galaxy located in the constellation of Ursa Major. It is at a distance of 65 million light years from Earth. NGC 2768 is an example of a Seyfert galaxy, an object with a supermassive black hole at its centre. A dusty structure is encircling the centre of the galaxy, forming a knotted ring around the galaxy's brightly glowing middle. This ring lies perpendicular to the plane of NGC 2768 itself, stretching up and out of the galaxy. The dust in NGC 2768 forms an intricate network of knots and filaments.[2]
| NGC 2768 | |
|---|---|
 NGC 2768 by Hubble Space Telescope. | |
| Observation data (J2000 epoch) | |
| Constellation | Ursa Major |
| Right ascension | 09h 11m 37.5s[1] |
| Declination | 60° 02′ 14″[1] |
| Redshift | 1353 ± 5 km/s[1] |
| Distance | 63.5 ± 11.8 Mly (19.5 ± 3.6 Mpc)[1] |
| Apparent magnitude (V) | 9.9 |
| Characteristics | |
| Type | S0 1/2 [1] |
| Apparent size (V) | 8′.1 × 4′.3[1] |
| Other designations | |
| UGC 4821, PGC 25915[1] | |
In the centre of the galaxy are two tiny, S-shaped symmetric jets. These two flows of material travel outwards from the galactic centre along curved paths, and are masked by the tangle of dark dust lanes that spans the body of the galaxy. These jets are a sign of a very active centre, where lies a supermassive black hole. This speeds up and sucks in gas from the nearby space, creating a stream of material swirling inwards towards the black hole known as an accretion disc. This disk throws off material in very energetic outbursts, creating structures like the jets.[2]
NGC 2768 has had one observed Type Ib supernova, designated SN2000ds, which occurred far from the nuclear region.[3]
Gallery
HST image of NGC 2768
NGC 2768 (SDSS DR14)
References
- "NASA/IPAC Extragalactic Database". Results for NGC 2768. Retrieved 2016-01-18.
- Dusty detail in elliptical galaxy NGC 2768 8 April 2013, ESA/Hubble & NASA
- Hakobyan, A. A.; et al. (June 24, 2008). "Early-type galaxies with core collapse supernovae". Astronomy and Astrophysics. 488 (2): 528–529. arXiv:0806.4269. Bibcode:2008A&A...488..523H. doi:10.1051/0004-6361:200809817. S2CID 17273642.
External links
Media related to NGC 2768 at Wikimedia Commons- NGC 2768 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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На других языках
[de] NGC 2768
NGC 2768 ist eine elliptische Galaxie vom Hubble-Typ E6 im Sternbild Großer Bär am Nordsternhimmel. Sie ist schätzungsweise 64 Millionen Lichtjahre von der Milchstraße entfernt und besitzt einen aktiven Galaxienkern.- [en] NGC 2768
[ru] NGC 2768
NGC 2768 (другие обозначения — UGC 4821, MCG 10-13-65, ZWG 288.26, PGC 25915) — линзообразная галактика (тип S0 по Хабблу)[5][6] в созвездии Большая Медведица.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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