文档与资源 - 搜索结果
搜索结果
世界各处的星座
视频
为 OAE 制作
图注： 2022 年国际天文学联合会 OAE 天体摄影比赛第三名，类别：天体的时间流逝。
本视频以自然为舞台主角，采用戏剧化结构，呈现冰岛与中国两地夜空的万千气象。
序幕由暮色蓝调渐暗展开，陆地云层为幕，壮美地貌为景，揭晓星空舞台。南天银河最摄人心魄的段落——天蝎座（Scorpius）与南十字座（Crux）之间，伴以半人马座α、β星（Alpha/Beta Centauri）这对"指极星"，如王者巡游般庄严划过天际。地面流云轻抚星光，反令恒星的色彩在朦胧中愈发澄明。
第一幕演绎人类文化中的星空意象。当昴星团（Pleiades）自山巅升起时，下方人影持电筒匆匆掠过。恰在昴宿跃出山脊的瞬间，电筒光束直射镜头——这精妙设计以幽默笔触，暗合文明史上人类与"昴宿初升"的深刻羁绊。
随后镜头转向北天经典星座——大熊座（Ursa Major）及其北斗七星，下方极光如拱门舞动。虽形态流转不息，本质却亘古如初。尽管北极文化常将极光视为先祖魂灵，本剧却未着墨人类信仰，径自将视野南移。新场景始于日出前的星辰初升，双子座/金牛座（Gemini/Taurus）区域黄道光锥显现，地平线渐染晨曦。约1分13秒处，猎户座（Orion）西沉于水面，天光云影共徘徊。流云过境印证着地球实景拍摄，而猎户肩足近乎同步沉没的奇观，暗示拍摄地近赤道——在此纬度，猎户亮星恰似巨蝶展翅：三星腰带为躯，四星四边形化翼。
首先，我们看到一些星星在日出前不久升起。黄道十二宫的光锥出现在双子座/金牛座，地平线变得更加明亮。在下一个场景中，大约 1 分 13 秒时，我们看到猎户座落在水面上，因此水面与天体景象相映成趣。一些云层穿过画面，证明这些视频确实是在我们美丽的星球上拍摄的，而且由于猎户座的肩部和脚部几乎同时落下，这组视频一定是在赤道附近拍摄的。在这一区域，猎户座的亮星看起来就像一只巨大的蝴蝶，猎户座腰带构成了蝴蝶的身体，而四颗亮星组成的四边形则被解释为蝴蝶的翅膀。
如真实剧院般，极光幕帘为"天宇戏剧"开启新章。此幕聚焦独特文化星象：既有中国星官体系中的苍龙之尾、箕宿、南斗（对应现代天蝎座与人马座区域），亦展现在全球多文明中被尊为星群的北冕座（Corona Borealis）冠冕轮廓。行星、织女（Vega）、天津四（Deneb）及其周边区域、牛郎（Altair）、银河，以及被地球诸多文明视为星群的仙后座（Cassiopeia）W形标志相继登场。
终章以两幕宁谧星空作结，天地归于大寂。
来源： Stephanie Ye Ziyi/IAU OAE
词汇表:
北斗七星 , 星座 , 银河系 , 猎户座
分类：
银河系与星际介质
, 肉眼天文学
授权许可： 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 图标
此文件在 Zenodo 上 ( 视频 46.52 MB)
The Horsehead Nebula
图像
图注： This image shows the Horsehead Nebula, located at a distance of about 1,300 light-years from Earth in the Orion constellation, one of the most iconic examples of a dark nebula. A dark nebula is a dense cloud of interstellar dust and cold gas that absorbs and scatters visible light, preventing background stars and glowing gas from reaching our eyes. This false-color image combines data captured through multiple narrowband filters, each isolating light from different elements in the nebula. The dark, horse-shaped silhouette appears sharply outlined against the luminous nebula behind it, where energetic radiation from nearby young stars causes the gas to glow. The uneven distribution of visible stars in this image is not random: regions rich in dust in the lower part of this image appear almost empty, while clearer areas reveal many background stars. The dust acts like a cosmic curtain, hiding stars that lie behind it while allowing stars in front of the cloud to remain visible. Studying such regions helps astronomers understand how nebulae serve as environments where new stars can form.
来源： T.A.Rector (NOIRLab/NSF/AURA) and Hubble Heritage Team (STScI/AURA/NASA)
来源链接
词汇表:
暗星云 , 灰尘 , 星云 , 空间
授权许可： 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 图标
文件
( 图像
23.89 MB)
The red supergiant Betelgeuse
图像
图注： The image shows Betelgeuse, a red supergiant in the constellation Orion, observed by the Atacama Large Millimeter/submillimeter Array (ALMA). ALMA consists of many antennae spread across a plain in Northern Chile. The observations from all of these receivers is synthesised together by a central computer to form an image. The wide distances between the antennae mean that is can resolve very fine details.
Most stars we observe are just seen as points of light, but Betelgeuse is so large (with a radius about 1,400 times larger than the Sun) and is sufficiently nearby that it is one of the few stars to have been resolved to show it as an extended object.
Betelgeuse is a massive star, more than 14 times the mass of the Sun and is relatively young for a star (less than 14 million years old). However, its high mass led to it having a very hot core which burned through its hydrogen fuel quickly. It has since evolved through many stages and now appears as a red supergiant, it's final stage before exploding as a supernova. When such an explosion will happen is not known for certain, but it could be in around 100,000 years. Such an explosion would be visible from Earth, even during the day.
来源： ALMA (ESO/NAOJ/NRAO)/E. O’Gorman/P. Kervella
来源链接
词汇表:
巨星 , 红巨星 , 红超巨星 , 超巨星 , M 型星
分类：
恒星
授权许可： 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 知识共享许可协议 署名 4.0 国际 (CC BY 4.0) 图标
文件
( 图像
4.86 MB)
