林茨暗星云1251
影像来源与版权:Francesco Sferlazza, Franco Sgueglia, Astro Brallo

说明:许多恒星正在林茨暗星云(LDN)1251内形成。这片尘埃分子云距离我们约1千光年远,漂浮在我们银河系的盘面上,是仙王座爆发区方向的复杂暗星云的一部分。我们在整个光谱下对模糊星际云进行的天文探索发现了与新生恒星有关的高能冲击波和外向流,包括散布在这幅清晰影像中的赫比格-哈罗天体发出的红色辉光。遥远的背景星系也隐藏在这幅影像中,从视觉上看,它们被广阔的尘埃云所遮挡。以LDN 1251的估计距离来计算,这幅用宽带滤波器拍摄的深空望远镜影像覆盖了约两个满月或17光年的天区。
翻译:北京天文馆

Lynds Dark Nebula 1251
Image Credit & Copyright: Francesco Sferlazza, Franco Sgueglia, Astro Brallo

Explanation: Stars are forming in Lynds Dark Nebula (LDN) 1251. About 1,000 light-years away and drifting above the plane of our Milky Way galaxy, the dusty molecular cloud is part of a complex of dark nebulae mapped toward the Cepheus flare region. Across the spectrum, astronomical explorations of the obscuring interstellar clouds reveal energetic shocks and outflows associated with newborn stars, including the telltale reddish glow from scattered Herbig-Haro objects seen in this sharp image. Distant background galaxies also lurk on the scene, visually buried behind the dusty expanse. The deep telescopic field of view imaged with broadband filters spans about two full moons on the sky, or 17 light-years at the estimated distance of LDN 1251.
Astronomy Picture of the Day 05/31/2019