2020 June 18
The Tadpoles of IC 410
Image Credit & Copyright: Trevor Jones
Explanation: This telescopic close-up shows off the central regions of otherwise faint emission nebula IC 410, captured under backyard suburban skies with narrowband filters. It also features two remarkable inhabitants of the cosmic pond of gas and dust. Below and right of center are the tadpoles of IC 410. Partly obscured by foreground dust, the nebula itself surrounds NGC 1893, a young galactic cluster of stars. Formed in the interstellar cloud a mere 4 million years ago, the intensely hot, bright cluster stars energize the glowing gas. Composed of denser cooler gas and dust, the tadpoles are around 10 light-years long and are likely sites of ongoing star formation. Sculpted by stellar winds and radiation their heads are outlined by bright ridges of ionized gas while their tails trail away from the cluster’s central young stars. IC 410 lies some 10,000 light-years away, toward the nebula-rich constellation Auriga.
Tomorrow’s picture: pixels in space
说明：这张摄于郊区后院的窄波段滤镜望远镜特写影像，呈现极为昏暗的发射星云IC 410之中心区。影像同时也记录了这座宇宙尘埃与气体池塘里，位在中左下方，称为IC 410蝌蚪的二团云气。受到前景尘埃部分遮掩的IC 410，本身环拱著编录号为NGC 1893的年轻银河星团。而刚在4百万年前，形成于星际云内的这群极端炽热且明亮的年轻恒星，则激发周围的云气散发出辉光。由较冷较密的气体和尘埃所组成的”蝌蚪”，长度约有10光年，内部可能正在形成恒星。受到了星团恒星风和辐射的雕塑，它们头部的边缘镶着明亮脊状的电离气体，而尾巴则指离星团的中心区。IC 410位在星云密布的御夫座方向，距离我们约有10，000光年远。
明日的图片：pixels in space