File:NGC 4650A I HST2002.jpg
原始檔案 (683 × 1,462 像素,檔案大小:1.36 MB,MIME 類型:image/jpeg)
說明
摘要
[編輯]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 | 攝於1999年5月6日 |
來源 |
|
作者 | The Hubble Heritage Team (AURA/STScI/NASA) |
本圖像或影音收錄於美國國家航空暨太空總署 (NASA)Great Pictures of NASA,其照片編號為: GPN-2000-000944 此標籤不表示文件的著作權狀態。任何文件在附有此標籤的同時還需要一個有效的著作權標籤。請參閱許可協議說明頁面以了解更多資訊。 其他語言:
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 ∙ +/− |
授權條款
[編輯]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. |
檔案歷史
點選日期/時間以檢視該時間的檔案版本。
日期/時間 | 縮圖 | 尺寸 | 用戶 | 備註 | |
---|---|---|---|---|---|
目前 | 2009年7月8日 (三) 11:54 | 683 × 1,462(1.36 MB) | Tryphon(對話 | 貢獻) | Original resolution. | |
2007年8月3日 (五) 18:53 | 478 × 1,024(69 KB) | Angusmclellan(對話 | 貢獻) | {{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 |
無法覆蓋此檔案。
檔案用途
下列5個頁面有用到此檔案:
全域檔案使用狀況
以下其他 wiki 使用了這個檔案:
- ar.wikipedia.org 的使用狀況
- az.wikipedia.org 的使用狀況
- be.wikipedia.org 的使用狀況
- ca.wikipedia.org 的使用狀況
- cv.wikipedia.org 的使用狀況
- de.wikipedia.org 的使用狀況
- en.wikipedia.org 的使用狀況
- eo.wikipedia.org 的使用狀況
- es.wikipedia.org 的使用狀況
- fr.wikipedia.org 的使用狀況
- hr.wikipedia.org 的使用狀況
- id.wikipedia.org 的使用狀況
- it.wikipedia.org 的使用狀況
- it.wikibooks.org 的使用狀況
- ja.wikipedia.org 的使用狀況
- kk.wikipedia.org 的使用狀況
- ko.wikipedia.org 的使用狀況
- lb.wikipedia.org 的使用狀況
- mg.wikipedia.org 的使用狀況
- mk.wikipedia.org 的使用狀況
- nl.wikipedia.org 的使用狀況
- pl.wikipedia.org 的使用狀況
- pt.wikipedia.org 的使用狀況
- ru.wikipedia.org 的使用狀況
- ru.wikinews.org 的使用狀況
- sk.wikipedia.org 的使用狀況
- sr.wikipedia.org 的使用狀況
- sv.wikipedia.org 的使用狀況
檢視此檔案的更多全域使用狀況。
詮釋資料
此檔案中包含其他資訊,這些資訊可能是由數位相機或掃描器在建立或數位化過程中所新增的。若檔案自原始狀態已被修改,一些詳細資料可能無法完整反映出已修改的檔案。
JPEG 檔案備註 | File written by Adobe Photoshop¨ 5.2 |
---|