Датотека:An intriguing young-looking dwarf galaxy.jpg
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OpisAn intriguing young-looking dwarf galaxy.jpg |
English: The bright streak of glowing gas and stars in this NASA/ESA Hubble Space Telescope image is known as PGC 51017, or SBSG 1415+437. It is type of galaxy known as a blue compact dwarf. This particular dwarf is well studied and has an interesting star formation history. Astronomers initially thought that SBS 1415+437 was a very young galaxy currently undergoing its very first burst of star formation, but more recent studies have suggested that the galaxy is in fact a little older, containing stars over 1.3 billion years old. Starbursts are an area of ongoing research for astronomers — short-lived and intense periods of star formation, during which huge amounts of gas within a galaxy are hungrily used up to form newborn stars. They have been seen in gas-rich disc galaxies, and in some lower-mass dwarfs. However, it is still unclear whether all dwarf galaxies experience starbursts as part of their evolution. It is possible that dwarf galaxies undergo a star formation cycle, with bursts occurring repeatedly over time. SBS 1415+437 is an interesting target for another reason. Dwarf galaxies like this are thought to have formed early in the Universe, producing some of the very first stars before merging together to create more massive galaxies. Dwarf galaxies which contain very few of the heavier elements formed from having several generations of stars, like SBS 1415+437, remain some of the best places to study star-forming processes similar to those thought to occur in the early Universe. However, it seems that our nearby patch of the Universe may not contain any galaxies that are currently undergoing their first burst of star formation. A version of this image was entered into the Hubble’s Hidden Treasures image processing competition by contestant Nick Rose. |
Datum | |
Izvor | http://www.spacetelescope.org/images/potw1511a/ |
Autor |
ESA/Hubble & NASA Acknowledgement: Alessandra Aloisi (STScI) and Nick Rose |
Licenciranje
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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.
Conditions:
Notes:
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Autorstvo: ESA/Hubble
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zaštićeno autorskim pravima Serbian (transliteracija)
Creative Commons Autorstvo 4.0 međunarodna Serbian (transliteracija)
16. mart 2015
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trenutna | 04:28, 17. mart 2015. | ![]() | 1.280 × 623 (142 kB) | Jmencisom | User created page with UploadWizard |
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Zasluge/pružalac usluga | ESA/Hubble & NASA Acknowledgement: Alessandra Aloisi (STScI) and Nick Rose |
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Izvor | ESA/Hubble |
Kratak naslov |
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Naziv slike |
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Pravila korišćenja |
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Datum i vreme slikanja | 10:00, 16. mart 2015. |
Korišćeni softver | Adobe Photoshop CC 2014 (Windows) |
Jedinstveni ID izvornog dokumenta | xmp.did:ed00000f-d829-8f45-8c1a-c0ad67cdb1cf |
Ključne reči | PGC 51017 |
Podaci za kontakt |
http://www.spacetelescope.org/ Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |
IIM verzija | 4 |