File:Sig07-009.jpg
原始檔案 (3,180 × 2,456 像素,檔案大小:5.94 MB,MIME 類型:image/jpeg)
說明
摘要
[編輯]This beautiful galaxy is tilted at an oblique angle on to our line of sight, giving a "birds-eye view" of the spiral structure. The galaxy is similar to our Milky Way, but our favorable view provides a better picture of the typical architecture of spiral galaxies.
M81 may be undergoing a surge of star formation along the spiral arms due to a close encounter it may have had with its nearby spiral galaxy NGC 3077 and a nearby starburst galaxy (M82) about 300 million years ago.
M81 is one of the brightest galaxies that can be seen from the Earth. It is high in the northern sky in the circumpolar constellation Ursa Major, the Great Bear. At an apparent magnitude of 6.8 it is just at the limit of naked-eye visibility. The galaxy's angular size is about the same as that of the Full Moon.
This image combines data from the Hubble Space Telescope, the Spitzer Space Telescope, and the Galaxy Evolution Explorer (GALEX) missions. The GALEX ultraviolet data were from the far-UV portion of the spectrum (135 to 175 nanometers). The Spitzer infrared data were taken with the IRAC 4 detector (8 microns). The Hubble data were taken at the blue portion of the spectrum.
File info
[編輯]描述Sig07-009.jpg | Multiwavelength M81 |
日期 | |
來源 | https://www.spitzer.caltech.edu/image/sig07-009-multiwavelength-m81 |
作者 | Hubble data: NASA, ESA, and A. Zezas (Harvard-Smithsonian Center for Astrophysics); GALEX data: NASA, JPL-Caltech, GALEX Team, J. Huchra et al. (Harvard-Smithsonian Center for Astrophysics); Spitzer data: NASA/JPL/Caltech/S. Willner (Harvard-Smithsonian Center for Astrophysics |
授權許可 (重用此檔案) |
https://www.spitzer.caltech.edu/page/image-use-policy |
Individual images
[編輯]see https://www.spitzer.caltech.edu/image/sig07-009-multiwavelength-m81 High quality tif files also avaliable.
授權條款
[編輯]Public domainPublic domainfalsefalse |
本作品由NASA創作,屬於公有領域。根據NASA的版權政策:“NASA的創作除非另有聲明否則不受版權保護。”(參見:Template:PD-USGov/zh,NASA版權政策或JPL圖像使用政策) | ||
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日期/時間 | 縮圖 | 尺寸 | 使用者 | 備註 | |
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目前 | 2007年7月11日 (三) 20:39 | 3,180 × 2,456(5.94 MB) | Anzibanonzi(留言 | 貢獻) | ==Summary== This beautiful galaxy is tilted at an oblique angle on to our line of sight, giving a "birds-eye view" of the spiral structure. The galaxy is similar to our Milky Way, but our favorable view provides a better picture of the typical architectur |
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下列4個頁面有用到此檔案:
- Messier 81
- User:WilyD
- File:Multiwavelength M81.jpg (檔案重新導向)
- File:NGC 3031SSTsig07-009 medium.jpg (檔案重新導向)
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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。
寬度 | 2,456 px |
---|---|
高度 | 3,180 px |
每像素位元 |
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壓縮方式 | LZW |
像素合成 | RGB |
方位 | 標準 |
像素數量 | 3 |
水平解析度 | 300 dpi |
垂直解析度 | 300 dpi |
資料排列 | 矮胖格式 |
使用軟體 | Adobe Photoshop CS3 Macintosh |
檔案修改日期時間 | 2007年5月30日 (三) 11:31 |
色彩空間 | 顏色未校準 |
影像寬度 | 3,180 px |
影像高度 | 2,456 px |
數位化的日期時間 | 2007年5月30日 (三) 04:31 |
詮釋資料最後修改日期 | 2007年5月30日 (三) 04:31 |
IIM 版本 | 2 |