File:Herschel’s view of the Taurus molecular cloud ESA384012.jpg
原始文件 (6,387 × 3,285像素,文件大小:1.39 MB,MIME类型:image/jpeg)
摘要
描述Herschel’s view of the Taurus molecular cloud ESA384012.jpg |
English: This mosaic combines several observations of the Taurus Molecular Cloud performed by ESA’s Herschel observatory. Located about 450 light-years from us, in the constellation Taurus, the Bull, this vast complex of interstellar clouds is where a myriad of stars are being born, and is the closest large region of star formation.
Observing the sky at far-infrared and submillimetre wavelengths from 2009 to 2013, Herschel could catch the faint glow of dust grains dispersed through these clouds. Astronomers can use this glow to trace the otherwise dark gas where star formation unfolds. The darker, blue-hued areas throughout the image correspond to colder, less dense portions of the cloud, while the brighter, red-hued regions are the densest environments, where the star-forming activity is most intense. The densest regions are distributed along an intricate network of filaments, teeming with bright clumps: the seeds of future stars. This is a textbook example of the filamentary structures that were spotted by Herschel nearly everywhere in the Galaxy, demonstrating the key role of filaments in star formation. Embedded in the bright clump towards the top left of the image is Lynds 1544, a pre-stellar core that will later turn into a star. Here, Herschel detected water vapour – the first time this molecule was ever found in a prestellar core – in an amount that exceeds, by over 2000 times, the water content of Earth’s oceans. Herschel observations of the tangled structures in the top right of the image have shown that the material along filaments is not at all static. In fact, the most prominent filaments appear to be drawing matter from their surroundings through a network of lower-density filaments, known as striations, perpendicular to the main filament. In these regions, astronomers found that magnetic fields tend to be perpendicular to the densest, star-forming filaments and parallel to the striations, indicating that they must also play an important role in the processes that lead to stellar birth. This four-colour image combines Herschel observations at 160 microns (blue), 250 microns (green), 350 microns (split between green and red) and 500 microns (red), and spans 13.8° by 7.3°; north is up and east to the left. Full story:The cosmic water trail uncovered by Herschel |
日期 | |
来源 | http://www.esa.int/spaceinimages/Images/2017/09/Herschel_s_view_of_the_Taurus_molecular_cloud |
作者 | European Space Agency |
授权 (二次使用本文件) |
ESA/Herschel/NASA/JPL-Caltech; acknowledgement: R. Hurt (JPL-Caltech),CC BY-SA 3.0 IGO |
Title InfoField | Herschel’s view of the Taurus molecular cloud |
Mission InfoField | Herschel |
Activity InfoField | Space Science |
许可协议
This media was created by the European Space Agency (ESA).
Where expressly so stated, images or videos are covered by the Creative Commons Attribution-ShareAlike 3.0 IGO (CC BY-SA 3.0 IGO) licence, ESA being an Intergovernmental Organisation (IGO), as defined by the CC BY-SA 3.0 IGO licence. The user is allowed under the terms and conditions of the CC BY-SA 3.0 IGO license to Reproduce, Distribute and Publicly Perform the ESA images and videos released under CC BY-SA 3.0 IGO licence and the Adaptations thereof, without further explicit permission being necessary, for as long as the user complies with the conditions and restrictions set forth in the CC BY-SA 3.0 IGO licence, these including that:
See the ESA Creative Commons copyright notice for complete information, and this article for additional details.
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本文件采用知识共享署名-相同方式共享 3.0 政府间组织许可协议授权。 署名: ESA/Herschel/NASA/JPL-Caltech; acknowledgement: R. Hurt (JPL-Caltech), CC BY-SA IGO 3.0
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描繪內容
知识共享署名-相同方式共享3.0政府间组织 简体中文(已转写)
20 9 2017
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当前 | 2017年9月24日 (日) 09:06 | 6,387 × 3,285(1.39 MB) | Fæ | European Space Agency, Id 384012, http://www.esa.int/spaceinimages/Images/2017/09/Herschel_s_view_of_the_Taurus_molecular_cloud, User:Fæ/Project_list/ESA |
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宽度 | 12,409 px |
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高度 | 6,570 px |
压缩方案 | 未压缩 |
像素构成 | 黑白(黑为0) |
方位 | 标准 |
像素数 | 1 |
水平分辨率 | 72 dpi |
垂直分辨率 | 72 dpi |
数据排列 | chunky format |
使用软件 | Adobe Photoshop CC 2017 (Macintosh) |
文件修改日期时间 | 2017年8月22日 (二) 17:12 |
色彩空间 | sRGB |
数字化日期时间 | 2017年8月21日 (一) 10:05 |
原始数据最后修改日期 | 2017年8月22日 (二) 10:12 |
原始文件唯一ID | xmp.did:9bc62a55-d6db-4ba1-8c23-4a591d561c63 |