File:NGC5398 - HST - Potw1737a.tiff
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[edit]DescriptionNGC5398 - HST - Potw1737a.tiff |
English: Starbursts in NGC 5398
This NASA/ESA Hubble Space Telescope picture shows NGC 5398, a barred spiral galaxy located about 55 million light-years away. The galaxy is famous for containing an especially extensive HII region, a large cloud composed of ionised hydrogen (or HII, pronounced “H-two”, with H being the chemical symbol for hydrogen and the “II” indicating that the atoms have lost an electron to become ionised). NGC 5398’s cloud is named Tol 89 and sits at the lower left end of the galaxy’s central “bar” of stars, a structure that cuts through the galactic core and funnels material inwards to maintain the star formation occurring there. Tol 86 is conspicuous in being the only large massive star forming complex in the entire galaxy, with an extension of roughly 5000 times 4000 light-years; it contains at least seven young and massive star clusters. The two brightest clumps within Tol 89, which astronomers have named simply “A” and “B”, appear to have undergone two bursts of star-forming activity — “starbursts” — roughly 4 million and less than 3 million years ago respectively. Tol 89-A is thought to contain a number of particularly bright and massive stars known as Wolf-Rayet stars, which are known for their high temperatures and extreme stellar winds. Credit: ESA/Hubble & NASA Coordinates Position (RA): 14 1 22.06 Position (Dec): -33° 3' 49.35" Field of view: 3.38 x 1.69 arcminutes Orientation: North is 99.1° right of vertical Colours & filters Band Wavelength Telescope Optical V 606 nm Hubble Space Telescope ACS Optical V 606 nm Hubble Space Telescope ACS Optical I 814 nm Hubble Space Telescope ACS Optical V 606 nm Hubble Space Telescope ACS Optical I 814 nm Hubble Space Telescope ACS. |
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Date | 11 September 2017, 06:00 (release) | |||
Source | http://spacetelescope.org/images/potw1737a/ http://spacetelescope.org/static/archives/images/original/potw1737a.tif | |||
Author | Credit: ESA/Hubble & NASA | |||
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ESA/Hubble images, videos and web texts are released by the ESA under the Creative Commons Attribution 4.0 International license and may on a non-exclusive basis be reproduced without fee provided they are clearly and visibly credited. Detailed conditions are below; see the ESA copyright statement for full information. For images created by NASA or on the hubblesite.org website, or for ESA/Hubble images on the esahubble.org site before 2009, use the {{PD-Hubble}} tag.
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 05:18, 11 September 2017 | ![]() | 4,054 × 2,024 (19.23 MB) | Fabian RRRR (talk | contribs) | =={{int:filedesc}}== {{Information |description={{en|1='''Starbursts in NGC 5398''' This NASA/ESA Hubble Space Telescope picture shows NGC 5398, a barred spiral galaxy located about 55 million light-years away. The galaxy is famous for containing an... |
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Width | 4,054 px |
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Height | 2,024 px |
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Compression scheme | LZW |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Number of rows per strip | 21 |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Data arrangement | chunky format |
Software used | Adobe Photoshop CC 2017 (Windows) |
File change date and time | 11:57, 3 December 2016 |
Color space | Uncalibrated |