File:NGC 4650A I HST2002.jpg
原始文件 (683 × 1,462像素,文件大小:1.36 MB,MIME类型:image/jpeg)
说明
摘要
[编辑]描述NGC 4650A I HST2002.jpg |
English: A Hubble Space Telescope (HST) image of NGC 4650A. Space Telescope Science Institute astronomers are giving the public chances to decide where to aim NASA's Hubble Space Telescope. Guided by 8,000 Internet voters, Hubble has already been used to take a close-up, multi-color picture of the most popular object from a list of candidates, the extraordinary "polar-ring" galaxy NGC 4650A.
Located about 130 million light-years away, NGC 4650A is one of only 100 known polar-ring galaxies. Their unusual disk-ring structure is not yet understood fully. One possibility is that polar rings are the remnants of colossal collisions between two galaxies sometime in the distant past, probably at least 1 billion years ago. What is left of one galaxy has become the rotating inner disk of old red stars in the center. Meanwhile, another smaller galaxy which ventured too close was probably severely damaged or destroyed. The bright bluish clumps, which are especially prominent in the outer parts of the ring, are regions containing luminous young stars, examples of stellar rebirth from the remnants of an ancient galactic disaster. The polar ring appears to be highly distorted. No regular spiral pattern stands out in the main part of the ring, and the presence of young stars below the main ring on one side and above on the other shows that the ring is warped and does not lie in one plane. Determining the typical ages of the stars in the polar ring is an initial goal of our Polar Ring Science Team that can provide a clue to the evolution of this unusual galaxy. The HST exposures were acquired by the Hubble Heritage Team, consisting of Keith Noll, Howard Bond, Carol Christian, Jayanne English, Lisa Frattare, Forrest Hamilton, Anne Kinney and Zolt Levay, and guest collaborators Jay Gallagher (University of Wisconsin-Madison), Lynn Matthews (National Radio Astronomy Observatory-Charlottesville), and Linda Sparke (University of Wisconsin-Madison). |
日期 | 摄于1999年5月6日 |
来源 |
|
作者 | The Hubble Heritage Team (AURA/STScI/NASA) |
本图像或视频收录于美国国家航空航天局 (NASA)Great Pictures of NASA,其照片编号是: GPN-2000-000944 此标签不表示文件的著作权状态。任何文件在附有此标签的同時还需要一个有效的著作权标签。请参阅许可协议说明页面以了解更多信息。 其他语言:
العربية ∙ беларуская (тарашкевіца) ∙ български ∙ català ∙ čeština ∙ dansk ∙ Deutsch ∙ English ∙ español ∙ فارسی ∙ français ∙ galego ∙ magyar ∙ հայերեն ∙ Bahasa Indonesia ∙ italiano ∙ 日本語 ∙ македонски ∙ മലയാളം ∙ Nederlands ∙ polski ∙ português ∙ русский ∙ sicilianu ∙ slovenščina ∙ Türkçe ∙ українська ∙ 简体中文 ∙ 繁體中文 ∙ +/− |
许可协议
[编辑]Public domainPublic domainfalsefalse |
This file is in the public domain because it was created by NASA and ESA. NASA Hubble material (and ESA Hubble material prior to 2009) is copyright-free and may be freely used as in the public domain without fee, on the condition that only NASA, STScI, and/or ESA is credited as the source of the material. This license does not apply if ESA material created after 2008 or source material from other organizations is in use. The material was created for NASA by Space Telescope Science Institute under Contract NAS5-26555, or for ESA by the Hubble European Space Agency Information Centre. Copyright statement at hubblesite.org or 2008 copyright statement at spacetelescope.org. For material created by the European Space Agency on the spacetelescope.org site since 2009, use the {{ESA-Hubble}} tag. |
文件历史
点击某个日期/时间查看对应时刻的文件。
日期/时间 | 缩略图 | 大小 | 用户 | 备注 | |
---|---|---|---|---|---|
当前 | 2009年7月8日 (三) 11:54 | 683 × 1,462(1.36 MB) | Tryphon(留言 | 贡献) | Original resolution. | |
2007年8月3日 (五) 18:53 | 478 × 1,024(69 KB) | Angusmclellan(留言 | 贡献) | {{Information |Description=A en:Hubble Space Telescope (HST) image of en:NGC 4650A. Credit: HST/en:NASA/en:ESA. See http://heritage.stsci.edu/1999/16/fast_facts.html . |Source=Originally from [http://en.wikipedia.org en.wikipedia]; d |
您不可以覆盖此文件。
文件用途
以下5个页面使用本文件:
全域文件用途
以下其他wiki使用此文件:
- ar.wikipedia.org上的用途
- az.wikipedia.org上的用途
- be.wikipedia.org上的用途
- ca.wikipedia.org上的用途
- cv.wikipedia.org上的用途
- de.wikipedia.org上的用途
- en.wikipedia.org上的用途
- eo.wikipedia.org上的用途
- es.wikipedia.org上的用途
- fr.wikipedia.org上的用途
- hr.wikipedia.org上的用途
- id.wikipedia.org上的用途
- it.wikipedia.org上的用途
- it.wikibooks.org上的用途
- ja.wikipedia.org上的用途
- kk.wikipedia.org上的用途
- ko.wikipedia.org上的用途
- lb.wikipedia.org上的用途
- mg.wikipedia.org上的用途
- mk.wikipedia.org上的用途
- nl.wikipedia.org上的用途
- pl.wikipedia.org上的用途
- pt.wikipedia.org上的用途
- ru.wikipedia.org上的用途
- ru.wikinews.org上的用途
- sk.wikipedia.org上的用途
- sr.wikipedia.org上的用途
- sv.wikipedia.org上的用途
查看此文件的更多全域用途。
元数据
此文件含有额外信息,这些信息可能是创建或数字化该文件时使用的数码相机或扫描仪所添加的。如果文件已从其原始状态修改,某些详细信息可能无法完全反映修改后的文件。
JPEG文件备注 | File written by Adobe Photoshop¨ 5.2 |
---|