File:Structure of Stars (artist’s impression).jpg
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摘要[編輯]
描述Structure of Stars (artist’s impression).jpg | Artist's impression of the structure of a solar-like star and a red giant. The two images are not to scale - the scale is given in the lower right corner. It is common to divide the Sun's (and solar-like stars') interior into three distinct zones: The uppermost is the Convective Zone. It extends downwards from the bottom of the photosphere to a depth of about 15% of the radius of the Sun. Here the energy is mainly transported upwards by (convection) streams of gas. The Radiative Zone is below the convection zone and extends downwards to the core. Here energy is transported outwards by radiation and not by convection. From the top of this zone to the bottom, the density increases 100 times. The core occupies the central region and its diameter is about 15% of that of the entire star. Here the energy is produced by fusion processes through which hydrogen nuclei are fused together to produce helium nuclei. In the Sun, the temperature is around 14 million degrees. In red giants, the convection zone is much larger, encompassing more than 35 times more mass than in the Sun. |
日期 | |
來源 | http://www.eso.org/public/images/eso0729a/ |
作者 | ESO |
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This media was created by the European Southern Observatory (ESO).
Their website states: "Unless specifically noted, the images, videos, and music distributed on the public ESO website, along with the texts of press releases, announcements, pictures of the week, blog posts and captions, are licensed under a Creative Commons Attribution 4.0 International License, and may on a non-exclusive basis be reproduced without fee provided the credit is clear and visible." To the uploader: You must provide a link (URL) to the original file and the authorship information if available. | |
This file is licensed under the Creative Commons Attribution 4.0 International license.
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現時 | 2013年5月28號 (二) 16:35 | 5,176 × 3,910(4.91 MB) | Stas1995(傾偈 | 貢獻) | {{Information |Description=Artist's impression of the structure of a solar-like star and a red giant. The two images are not to scale - the scale is given in the lower right corner. It is common to divide the Sun's (and solar-like stars') interior into... |
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來源 | European Southern Observatory |
Credit/Provider | ESO |
短標題 |
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原創日期時間 | 2007年7月6號 (五) 00:00 |
關鍵字 | Stars |
聯繫信息 |
Karl-Schwarzschild-Strasse 2 Garching bei München, , D-85748 Germany |