标签: Nebulae

哈勃望远镜观测小哑铃星云庆祝34周年

4月24日,为了庆祝NASA传奇的哈勃太空望远镜发射34周年,天文学家拍摄了位于3,400光年外北天拱极星座英仙座的小哑铃星云(也称为梅西耶76、M76或NGC 650/651)的快照。这个上镜的星云是业余天文学家最喜欢的目标。

詹姆斯·韦伯太空望远镜:英仙座中一颗著名的原恒星

这张来自NASA/ESA/CSA詹姆斯·韦伯太空望远镜拍摄的本月新照片揭示了赫比格-哈罗天体797(HH 797)的复杂细节。赫比格-哈罗天体是新生恒星(被称为原恒星)周围的发光区域,由这些新生恒星喷出的恒星风或气体喷流形成激波,与附近的气体和尘埃高速碰撞时形成。HH 797占据了图像的下半部分,它位于年轻的疏散星团IC 348附近,IC 348位于英仙座暗云复合体的东部边缘附近。图像上方明亮的红外物体被认为是另外两颗原恒星的宿主。 这张照片是由韦伯的近红外相机(NIRCam)拍摄。红外成像在研究新生恒星及其外流方面非常强大,因为最年轻的恒星总是镶嵌在形成它们的气体和尘埃中。恒星外流的红外辐射穿透了遮蔽的气体和尘埃,使赫比格-哈罗天体成为韦伯灵敏红外仪器观测的理想对象。在湍流条件下被激发的分子,包括氢分子和一氧...

NASA的IXPE观测到前所未有的历史性星云

科学家们已经使用IXPE创建了蟹状星云磁场的详细而细致的地图,揭示了比以往更多的内部工作原理。发表在《自然天文学》杂志上的新结果,有助于解决关于被充分研究的蟹状星云的长期谜团,并为未来的研究提出了新的问题。

船帆座脉冲星风星云在NASA IXPE的新图像中飞行

大约一万年前,船帆座的一颗巨星爆炸发出的光到达了地球。这颗超新星留下了一个被称为脉冲星的致密物体,它在旋转时似乎有规律地变亮,就像一座宇宙灯塔。从这颗脉冲星的表面,出现了以接近光速传播的粒子风,形成了带电粒子和磁场的混乱大杂烩,并与周围的气体相撞。这种现象被称为脉冲星风星云。 这张照片显示了船帆座脉冲星风星云。浅蓝色代表来自NASA X射线成像偏振探测器的X射线偏振数据。粉色和紫色对应于NASA钱德拉X射线天文台的数据,该天文台此前曾多次观测到船帆座。NASA的哈勃太空望远镜拍摄了背景中的恒星。单击此处查看未标记的图像。 影像来源:X射线: (IXPE) NASA/MSFC/Fei Xie & (Chandra) NASA/CXC/SAO;光学:NASA/STScI Hubble/Chandra;由N...

哑铃星云发出光秀

Infrared light surges out from the Dumbbell Nebula, also known as Messier 27, in this Aug. 10, 2011, image from NASA’s Spitzer Space Telescope. This nebula was discovered in 1764 by Charles Messier. It was the first in a class of objects, now known as planetary nebulae, to make it into Messier’s catalog of astronomical objects. Planetary nebulae, histo...

哈勃对狼蛛星云的新观察

A snapshot of the Tarantula Nebula (also known as 30 Doradus) is featured in this image from the NASA/ESA Hubble Space Telescope. The Tarantula Nebula is a large star-forming region of ionized hydrogen gas that lies 161,000 light-years from Earth in the Large Magellanic Cloud, and its turbulent clouds of gas and dust appear to swirl between the region’s brig...

哈勃观测到猎户座星云中的双星

The bright variable star V 372 Orionis takes center stage in this image from the NASA/ESA Hubble Space Telescope, which has also captured a smaller companion star in the upper left of this image. Both stars lie in the Orion Nebula, a colossal region of star formation roughly 1,450 light-years from Earth. V 372 Orionis is a particular type of variable star kn...

韦伯在船底星云中发现了年轻恒星的爆发

By taking a closer look at one of Webb’s first images, the iconic Cosmic Cliffs, scientists have found dozens of energetic jets and outflows from young stars previously hidden by dust clouds. The discovery marks the beginning of a new era of investigating how stars like our Sun form, and how the radiation from nearby massive stars might affect the developmen...

哈勃望远镜观测到一个布满恒星的宇宙云

A portion of the open cluster NGC 6530 appears as a roiling wall of smoke studded with stars in this image from the NASA/ESA Hubble Space Telescope. NGC 6530 is a collection of several thousand stars lying around 4,350 light-years from Earth in the constellation Sagittarius. The cluster is set within the larger Lagoon Nebula, a gigantic interstellar cloud of...