Chamaeleon 黑暗星雲
Chamaeleon Dark Nebulas

來源:Chang Lee|發表日期:2024-07-22
有時,星際空間的黑暗塵埃具有優雅的角度。 遙遠的南迦馬倫星座就是這種情況。通常情況下,暗塵埃太微弱而無法看到,它最出名的地方就是遮擋了其背後恆星和星系的可見光。然而,在這次長達 36 . 6 小時的曝光中,人們看到的主要是塵埃自身的光線,其強烈的紅色和近紅外色彩營造出一種棕色的色調。右上方可以看到明亮的 Beta Chamaeleontis 星,與之形成鮮明對比的是藍色,其周圍的塵埃主要反射藍白色的藍光。 圖中所有的恆星和塵埃都出現在我們的銀河系中,但有一個明顯的例外:Beta Chamaeleontis 下方的白點是遠處的 IC 3104 星系。 星際塵埃大多產生於巨星的冷大氣中,並透過恆星光、恆星風和恆星爆炸(如超新星)散佈到太空中。
原文:Sometimes the dark dust of interstellar space has an angular elegance. Such is the case toward the far-south constellation of Chamaeleon. Normally too faint to see, dark dust is best known for blocking visible light from stars and galaxies behind it. In this 36.6-hour exposure, however, the dust is seen mostly in light of its own, with its strong red and near-infrared colors creating a brown hue. Contrastingly blue, the bright star Beta Chamaeleontis is visible on the upper right, with the dust that surrounds it preferentially reflecting blue light from its primarily blue-white color. All of the pictured stars and dust occur in our own Milky Way Galaxy with one notable exception: the white spot just below Beta Chamaeleontis is the galaxy IC 3104 which lies far in the distance. Interstellar dust is mostly created in the cool atmospheres of giant stars and dispersed into space by stellar light, stellar winds, and stellar explosions such as supernovas.
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