File:Sirius A and B artwork.jpg

页面内容不支持其他语言。
這個文件來自維基共享資源
维基百科，自由的百科全书

原始文件 ‎（4,000 × 3,000像素，文件大小：4.11 MB，MIME类型：image/jpeg）

维基百科

 本文件是土耳其语维基百科特色图片（Seçkin resimler），并被视为最好的图像之一。

如果你认为本文件应该被选为维基共享资源特色内容，请推荐本文件。
如果你拥有相似质量的可采用适当著作权许可协议发布的图像，一定要上传、标记并推荐它。

描述 This picture is an artist's impression showing how the binary star system of Sirius A and its diminutive blue companion, Sirius B, might appear to an interstellar visitor. The large, bluish-white star Sirius A dominates the scene, while Sirius B is the small but very hot and blue white-dwarf star on the right. The two stars revolve around each other every 50 years. White dwarfs are the leftover remnants of stars similar to our Sun. The Sirius system, only 8.6 light-years from Earth, is the fifth closest stellar system known. Sirius B is faint because of its tiny size. Its diameter is only 7,500 miles (about 12 thousand kilometres), slightly smaller than the size of our Earth. The Sirius system is so close to Earth that most of the familiar constellations would have nearly the same appearance as in our own sky. In this rendition, we see in the background the three bright stars that make up the Summer Triangle: Altair, Deneb, and Vega. Altair is the white dot above Sirius A; Deneb is the dot to the upper right; and Vega lies below Sirius B. But there is one unfamiliar addition to the constellations: our own Sun is the second-magnitude star, shown as a small dot just below and to the right of Sirius A.
日期 13 December 2005, 15:00
来源 http://www.spacetelescope.org/images/heic0516b/
作者 NASA, ESA and G. Bacon (STScI)


Public domain 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.

说明

添加一行文字以描述该文件所表现的内容
Artist's impression of the binary star system of Sirius A and its blue companion, Sirius B

此文件中描述的项目

描繪內容

天狼星

多媒體型式

image/jpeg

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2007年12月10日 (一) 17:152007年12月10日 (一) 17:15版本的缩略图4,000 × 3,000（4.11 MB）DENkerhigher quality image
2005年12月25日 (日) 12:482005年12月25日 (日) 12:48版本的缩略图4,000 × 3,000（2.32 MB）SuperborsukAn Artist's Impression of Sirius A and Sirius B Source: http://hubblesite.org/newscenter/newsdesk/archive/releases/2005/36/image/b

以下4个页面使用本文件：

全域文件用途

以下其他wiki使用此文件：

查看本文件的更多全域用途。

取自“https://zh.wikipedia.org/wiki/File:Sirius_A_and_B_artwork.jpg”