Dosya:NGC 5954 in Arp 91 (HST potw2140a, cropped).jpg
Ebato oricinale (1,600 × 1,200 pikselan, ebatê dosya: 348 KB, MIME tipê cı: image/jpeg)
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Xulasa
ŞınasnayışNGC 5954 in Arp 91 (HST potw2140a, cropped).jpg |
English: A Dangerous Dance
This Picture of the Week features two interacting galaxies that are so intertwined, they have a collective name — Arp 91. This delicate galactic dance is taking place over 100 million light-years from Earth, and was captured by the NASA/ESA Hubble Space Telescope. The two galaxies comprising Arp 91 do have their own names: the lower galaxy, which in this image looks like a bright spot, is known as NGC 5953; and the ovoid galaxy to the upper right is NGC 5954. In reality, both of these galaxies are spiral galaxies, but their shapes appear very different because they are orientated differently with respect to Earth. Arp 91 provides a particularly vivid example of galactic interaction. NGC 5954 is clearly being tugged towards NGC 5953 — it looks like it is extending one spiral arm downwards. It is the immense gravitational attraction of the two galaxies that is causing them to interact. Such gravitational interactions between galaxies are common, and are an important part of galactic evolution. Most astronomers nowadays believe that collisions between spiral galaxies lead to the formation of another type of galaxy, known as elliptical galaxies. These immensely energetic and massive collisions, however, happen on timescales that dwarf a human lifetime — they take place over hundreds of millions of years. So we should not expect Arp 91 to look any different over the course of our lifetimes! Coordinates Position (RA): 15 34 33.16 Position (Dec): 15° 11' 46.26" Field of view: 2.55 x 2.85 arcminutes Orientation: North is 82.0° right of vertical Colours & filters Band Wavelength Telescope Optical G 477 nm SDSS Optical G 474 nm Víctor M. Blanco 4-meter Telescope DECam Optical R 644 nm Víctor M. Blanco 4-meter Telescope DECam Optical R 623 nm SDSS Optical I 785 nm Víctor M. Blanco 4-meter Telescope DECam Optical I 762 nm SDSS Optical V 606 nm Hubble Space Telescope ACS. |
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Tarix | (released) | |||
Çıme | https://esahubble.org/images/potw2140a/ | |||
Nuştekar | ESA/Hubble & NASA, J. Dalcanton; Acknowledgement: J. Schmidt | |||
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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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Tarix/Zeman | Resımo qıckek | Ebadi | Karber | Mışewre | |
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nıkayên | 18:57, 24 Tışrino Verên 2021 | 1,600 - 1,200 (348 KB) | Huntster | File:Arp91 - HST - SDSS - DECam - Potw2140a.jpg cropped 48 % horizontally, 65 % vertically using CropTool with lossless mode. |
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Metadata
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Çıme | ESA/Hubble |
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Kredi/Destegdaren | ESA/Hubble & NASA, J. DalcantonAcknowledgement: J. Schmidt |
Sernuşteyo qıckek |
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Image title |
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Şertê karkerdışi |
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Date and time of data generation | 06:00, 4 Tışrino Verên 2021 |
Karenaye nusnerek | Adobe Photoshop 22.4 (Windows) |
File change date and time | 00:55, 8 Keşkelun 2021 |
Demê dijitalkerdışi | 10:21, 25 Tebaxe 2021 |
Malumatê metamalumati peyd timarya | 02:55, 8 Keşkelun 2021 |
Xasiya ID ya dokuman de orcinali | xmp.did:8ad8ed5b-43da-41a5-9ec1-b91a97af9016 |
Çekuyên kıliti |
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Melumatê irtıbati |
ESA Office, Space Telescope Science Institute, 3700 San Martin Dr Baltimore, MD, 21218 United States |
Verqaydê IIM | 4 |