File:Terzan 7 by HST.jpg

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摘要

描述Terzan 7 by HST.jpg	English: Named after its discoverer, the French-Armenian astronomer Agop Terzan, this is the globular cluster Terzan 7 — a densely packed ball of stars bound together by gravity. It lies just over 75 000 light-years away from us on the other side of our galaxy, the Milky Way. It is a peculiar cluster, quite unlike others we observe, making it an intriguing object of study for astronomers. Evidence shows that Terzan 7 used to belong to a small galaxy called the Sagittarius Dwarf Galaxy, a mini-galaxy discovered in 1994. This galaxy is currently colliding with, and being absorbed by, the Milky Way, which is a monster in size when compared to this tiny one. It seems that this cluster has already been kidnapped from its former home and now is part of our own galaxy. Astronomers recently discovered that all the stars in Terzan 7 were born at around the same time, and are about eight billion years old. This is unusually young for such a cluster. The shared birthday is another uncommon property; a large number of globular clusters, both in the Milky Way and in other galaxies, seem to have at least two clearly differentiated generations of stars that were born at different times. Some explanations suggest that there is something different about clusters that form within dwarf galaxies, giving them a different composition. Others suggest that clusters like Terzan 7 only have enough material to form one batch of stars, or that perhaps its youthfulness has prevented it from yet forming another generation. A version of this image was entered into the Hubble's Hidden Treasures image processing competition by contestant Gilles Chapdelaine.
日期	2014年2月10日, 10:00:00
来源	http://www.spacetelescope.org/images/potw1406a/
作者	NASA, ESA, and A. Sarajedini (University of Florida) Acknowledgement: Gilles Chapdelaine

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	日期/时间	缩⁠略⁠图	大小	用户	备注
当前	2014年2月11日 (二) 01:57		4,295 × 4,169（13.53 MB）	Jmencisom	User created page with UploadWizard

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泰爾讓7

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ar.wikipedia.org上的用途
- تيزران 7
de.wikipedia.org上的用途
- Terzan 7
- Observatoire de Lyon
en.wikipedia.org上的用途
- Terzan 7
fr.wikipedia.org上的用途
- Observatoire de Lyon
- Terzan 7
it.wikipedia.org上的用途
- Terzan 7
lb.wikipedia.org上的用途
- Terzan 7
pl.wikipedia.org上的用途
- Terzan 7
pt.wikipedia.org上的用途
- Terzan 7

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来源	ESA/Hubble
提供者	NASA, ESA, and A. Sarajedini (University of Florida) Acknowledgement: Gilles Chapdelaine
图像标题	Named after its discoverer, the French-Armenian astronomer Agop Terzan, this is the globular cluster Terzan 7— a densely packed ball of stars bound together by gravity. It lies just over 75 000 light-years away from us on the other side of our galaxy, the Milky Way. It is a peculiar cluster, quite unlike others we observe, making it an intriguing object of study for astronomers. Evidence shows that Terzan 7 used to belong to a small galaxy called the Sagittarius Dwarf Galaxy, a mini-galaxy discovered in 1994. This galaxy is currently colliding with, and being absorbed by, the Milky Way, which is a monster in size when compared to this tiny one. It seems that this cluster has already been kidnappedfrom its former home and now is part of our own galaxy. Astronomers recently discovered that all the stars in Terzan 7 were born at around the same time, and are about eight billion years old. This is unusually young for such a cluster. The shared birthday is another uncommon property; a large number of globular clusters, both in the Milky Way and in other galaxies, seem to have at least two clearly differentiated generations of stars that were born at different times. Some explanations suggest that there is something different about clusters that form within dwarf galaxies, giving them a different composition. Others suggest that clusters like Terzan 7 only have enough material to form one batch of stars, or that perhaps its youthfulness has prevented it from yet forming another generation. A version of this image was entered into the Hubble's Hidden Treasures image processing competition by contestant Gilles Chapdelaine.
简短标题	It came from outer space
使用条款	Creative Commons Attribution 3.0 Unported license
数据生成日期时间	2014年2月10日 (一) 10:00
关键词	Sagittarius Dwarf Galaxy Terzan 7
联系信息	http://www.spacetelescope.org/ Karl-Schwarzschild-Strasse 2 Garching bei M√ºnchen, , D-85748 Germany

File:Terzan 7 by HST.jpg

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File:Terzan 7 by HST.jpg

摘要

许可协议

说明

此文件中描述的项目

描绘内容

泰尔让7 中文（已转写）

版权状态 简体中文（已转写）

版权所有 简体中文（已转写）

许可协议

知识共享署名4.0国际 简体中文（已转写）

成立或创建时间

10 2 2014

文件历史

文件用途

全域文件用途

元数据

泰尔让7 ^{中文（已转写）}

版权状态 ^{简体中文（已转写）}

版权所有 ^{简体中文（已转写）}

知识共享署名4.0国际 ^{简体中文（已转写）}