File:NGC2273 - HST - Potw2014a.tif
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[Bearbeiten]BeschreibungNGC2273 - HST - Potw2014a.tif |
Rings Upon Rings At first glance, the subject of this NASA/ESA Hubble Space Telescope image looks to be a simple spiral galaxy, with two pinwheeling arms emerging from a central bar of stars and material that cuts through the galactic centre. In fact, there are rings within these spiral arms, too: spirals within a spiral. This kind of morphology is known as a multiring structure. As this description suggests, this galaxy, named NGC 2273, hosts an inner ring and two outer “pseudorings” — having so many distinct rings is rare, and makes NGC 2273 unusual. Rings are created when a galaxy’s spiral arms appear to loop around to nearly close upon one another, combined with a trick of cosmic perspective. NGC 2273’s two pseudorings are formed by two swirling sets of spiral arms coming together, and the inner ring by two arcing structures nearer to the galactic centre, which seem to connect in a similar way. These rings are not the only unique feature of this galaxy. NGC 2273 is also a Seyfert galaxy, a galaxy with an extremely luminous core. In fact, the centre of a galaxy such as this is powered by a supermassive black hole, and can glow brightly enough to outshine an entire galaxy like the Milky Way. Credit: ESA/Hubble & NASA, J. Greene
Coordinates Position (RA): 6 50 8.02 Position (Dec): 60° 51' 3.26" Field of view: 2.59 x 2.01 arcminutes Orientation: North is 6.8° left of vertical Colours & filters Band Wavelength Telescope Optical B 438 nm Hubble Space Telescope WFC3 Optical U 336 nm Hubble Space Telescope WFC3 Optical I 814 nm Hubble Space Telescope WFC3 Optical SII 673 nm Hubble Space Telescope WFC3 Infrared H 1.6 μm Hubble Space Telescope WFC3. |
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Datum | 6 April 2020, 06:00 (Release) | |||
Quelle | https://spacetelescope.org/images/potw2014a/ https://spacetelescope.org/static/archives/images/original/potw2014a.tif | |||
Urheber | Credit: ESA/Hubble & NASA, J. Greene | |||
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![]() ![]() Diese Datei ist lizenziert unter der Creative-Commons-Lizenz „Namensnennung 4.0 international“. Namensnennung: ESA/Hubble
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aktuell | 21:23, 6. Apr. 2020 | ![]() | 3.924 × 3.054 (27,57 MB) | Fabian RRRR (Diskussion | Beiträge) | == {{int:filedesc}} == {{Information |Description='''Rings Upon Rings At first glance, the subject of this NASA/ESA Hubble Space Telescope image looks to be a simple spiral galaxy, with two pinwheeling arms emerging from a central bar of stars and material that cuts through the galactic centre. In fact, there are rings within these spiral arms, too: spirals within a spiral. This kind of morphology is known as a multiring structure. As this description suggests, this galaxy, named NGC 2273,... |
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