NGC 1333:英仙座内的恒星孕育场
影像来源与版权:Steve Milne, Barry Wilson, Steve Milne

说明:NGC 1333在可见光下被认为是一个反射星云,其特有的泛蓝色泽主要源自受到星际尘埃反射的星光。该星云位于英仙座方向、一个巨大产星分子云的边缘,距离我们仅1千光年远。这幅引人注目的特写影像覆盖了大约两个满月的天区,以NGC 1333的估计距离来计算,刚好超过15光年。该影像除了显示尘埃区域的细致结构之外,还呈现了赫比格-哈罗天体反差鲜明的红色辐射,以及由最近诞生恒星发出的炽热气体得喷流和激波。实际上,NGC 1333包含了数百颗年龄不到100万年的恒星,其中大多数仍然被广袤的星尘所遮挡,无法被光学望远镜观测到。这种混沌的环境可能与我们太阳在45亿年前形成时的环境相似。

NGC 1333: Stellar Nursery in Perseus
Image Credit & Copyright: Steve Milne, Barry Wilson; Processing: Steve Milne

Explanation: NGC 1333 is seen in visible light as a reflection nebula, dominated by bluish hues characteristic of starlight reflected by interstellar dust. A mere 1,000 light-years distant toward the heroic constellation Perseus, it lies at the edge of a large, star-forming molecular cloud. This striking close-up spans about two full moons on the sky or just over 15 light-years at the estimated distance of NGC 1333. It shows details of the dusty region along with telltale hints of contrasty red emission from Herbig-Haro objects, jets and shocked glowing gas emanating from recently formed stars. In fact, NGC 1333 contains hundreds of stars less than a million years old, most still hidden from optical telescopes by the pervasive stardust. The chaotic environment may be similar to one in which our own Sun formed over 4.5 billion years ago.
Astronomy Picture of the Day 03/27/2019