NGC 6822
| NGC 6822 | |
 | |
| Observationsdata | |
|---|---|
| Stjärnbild | Skytten[1] |
| Rektascension | 19t 44m 57.7s[2] |
| Deklination | -14° 48′ 12″[2] |
| Avstånd | ungeär 1,6 miljoner[1] ljusår |
| Typ | IB(s)m[2] |
| Skenbar storlek | 15,5' × 13,5'[2] |
| Skenbar magnitud | 9,31[2] |
| Upptäckt | |
| Upptäcktsår | 1884[1] |
| Upptäckare | Edward Emerson Barnard[1] |
| Andra beteckningar | |
| Barnards galax,[1] Caldwell 57,[3] IRAS F19420-1450, IC 4895, CGS 540, DDO 209, HIPASS J1944-14, MCG -02-50-006, PGC 063616, 2MASX J19445619-1447512, 11HUGS 405, 2MASXi J1944561-144805, IRAS 19420-1450, [SPB93] 261[2] | |
| Se även: Galaxer, Lista över galaxer | |
NGC 6822, även Barnards galax, är en oregelbunden dvärggalax i stjärnbilden skytten.[1] Den ingår i lokala galaxhopen.[1] NGC 6822 har ungefär 10 miljoner stjärnor, medan vintergatan har uppskattningsvis 400 miljarder.[1]
Referenser
- ^ [a b c d e f g h] Liten men tuff: Vintergatans galaktiska granne, ESO, 14 oktober 2009
- ^ [a b c d e f] ”NGC 6822 på NASA/IPAC Extragalactic Database”. Arkiverad från originalet den 30 maj 2016. https://web.archive.org/web/20160530120029/http://ned.ipac.caltech.edu/ui/?q=objsearch&omegam=0.27&extend=no&out_csys=Equatorial&objname=NGC%206822&hconst=73&img_stamp=YES&list_limit=5&of=pre_text&out_equinox=J2000.0&corr_z=1&omegav=0.73&obj_sort=RA%20or%20Longitude. Läst 28 april 2016.
- ^ Caldwellkatalogen på SEDS
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Media som används på denna webbplats
Barnard's Galaxy.jpg
Författare/Upphovsman: ESO, Licens: CC BY 4.0
Astronomers obtained this portrait of Barnard’s Galaxy using the Wide Field Imager attached to the 2.2-metre MPG/ESO telescope at ESO’s La Silla Observatory in northern Chile. Also known as NGC 6822, this dwarf irregular galaxy is one of the Milky Way’s galactic neighbours. The dwarf galaxy has no shortage of stellar splendour and pyrotechnics. Reddish nebulae in this image reveal regions of active star formation, wherein young, hot stars heat up nearby gas clouds. Also prominent in the upper left of this new image is a striking bubble-shaped nebula. At the nebula’s centre, a clutch of massive, scorching stars send waves of matter smashing into surrounding interstellar material, generating a glowing structure that appears ring-like from our perspective. Other similar ripples of heated matter thrown out by feisty young stars are dotted across Barnard’s Galaxy.
Författare/Upphovsman: ESO, Licens: CC BY 4.0
Astronomers obtained this portrait of Barnard’s Galaxy using the Wide Field Imager attached to the 2.2-metre MPG/ESO telescope at ESO’s La Silla Observatory in northern Chile. Also known as NGC 6822, this dwarf irregular galaxy is one of the Milky Way’s galactic neighbours. The dwarf galaxy has no shortage of stellar splendour and pyrotechnics. Reddish nebulae in this image reveal regions of active star formation, wherein young, hot stars heat up nearby gas clouds. Also prominent in the upper left of this new image is a striking bubble-shaped nebula. At the nebula’s centre, a clutch of massive, scorching stars send waves of matter smashing into surrounding interstellar material, generating a glowing structure that appears ring-like from our perspective. Other similar ripples of heated matter thrown out by feisty young stars are dotted across Barnard’s Galaxy.
