Dosya:The dwarf galaxy NGC 4625.jpg
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ŞınasnayışThe dwarf galaxy NGC 4625.jpg |
English: This new Picture of the Week, taken by the NASA/ESA Hubble Space Telescope, shows the dwarf galaxy NGC 4625, located about 30 million light-years away in the constellation of Canes Venatici (The Hunting Dogs). The image, acquired with the Advanced Camera for Surveys (ACS), reveals the single spiral arm of the galaxy, which gives it an asymmetric appearance. But why is there only one spiral arm, when spiral galaxies normally have at least two? Astronomers looked at NGC 4625 in different wavelengths in the hope of solving this cosmic mystery. Observations in the ultraviolet provided the first hint: in ultraviolet light the disc of the galaxy appears four times larger than on the image depicted here. An indication that there are a large number of very young and hot — hence mainly visible in the ultraviolet — stars forming in the outer regions of the galaxy. These young stars are only around one billion years old, about 10 times younger than the stars seen in the optical centre. At first astronomers assumed that this high star formation rate was being triggered by the interaction with another, nearby dwarf galaxy called NGC 4618. They speculated that NGC 4618 may be the culprit “harassing” NGC 4625, causing it to lose all but one spiral arm. In 2004 astronomers found proof for this claim: The gas in the outermost regions of the dwarf galaxy NGC 4618 has been strongly affected by NGC 4625. |
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Çıme | https://www.spacetelescope.org/images/potw1746a/ | |||
Nuştekar | ESA/Hubble | |||
Destur (Reyna sixulnayise ena dosya) |
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Ena dosya bınê Creative Commons Beynelmillel de 3.0 ya binaen lisans biya. Gırêdayış: ESA/Hubble
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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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Ena dosya bınê Creative Commons Beynelmillel de 3.0 ya binaen lisans biya.
Gırêdayış: ESA/Hubble
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Dewrê mocnayışi
copyrighted English
13 Tışrino Peyên 2017
Verêniya dosya
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nıkayên | 22:33, 15 Tışrino Peyên 2017 | 3,386 - 1,806 (2.83 MB) | Polonoid | User created page with UploadWizard |
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Metadata
This file contains additional information, probably added from the digital camera or scanner used to create or digitize it. If the file has been modified from its original state, some details may not fully reflect the modified image.
Kredi/Destegdaren | ESA/Hubble & NASA |
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Çıme | ESA/Hubble |
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, 13 Tışrino Peyên 2017 |
Karenaye nusnerek | Adobe Photoshop CC 2017 (Windows) |
File change date and time | 15:19, 9 Hezirane 2017 |
Demê dijitalkerdışi | 19:47, 11 Çele 2017 |
Malumatê metamalumati peyd timarya | 17:19, 9 Hezirane 2017 |
Xasiya ID ya dokuman de orcinali | xmp.did:30945ce7-ad33-6349-bad4-b2fae6e3d88a |
Çekuyên kıliti | NGC 4625 |
Melumatê irtıbati |
Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |
Verqaydê IIM | 4 |
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