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恒星形成区 NGC 604 的最新最详细图像 

詹姆斯韦伯太空望远镜 (JWST) has taken near-infrared and mid-infrared images of the star-forming region NGC 604, located nearby in the neighbourhood of home 星系. The images are most detailed ever and offer unique opportunity to study high concentration of massive, young stars in neighbouring galaxies to our home 星系, the Milky Way.  

The high concentration of massive 星星 at relatively close distance, means the star-forming NGC 604 offers a unique opportunity to study stars early in their life. Sometimes, the ability to study nearby objects (such as star-forming region NGC 604) at an extremely high resolution can help better understand more distant objects. 

近红外视图:  

NGC 604 的这张图像是由 NIRCam(近红外相机)拍摄的 西太平洋标准时间.  

Tendrils and clumps of emission that appear bright red, extending out from areas that look like clearings, or large bubbles in the nebula are the most noticeable features of the near-infrared image. Stellar winds from the brightest and hottest young 星星 have carved out these cavities, while ultraviolet radiation ionizes the surrounding gas. This ionized hydrogen appears as a white and blue ghostly glow. 

恒星形成区 NGC 604 的最新最详细图像
这张来自 NASA 詹姆斯·韦伯太空望远镜 NIRCam(近红外相机)的恒星形成区域 NGC 604 的图像显示了来自明亮、炎热、年轻恒星的星风如何在周围的气体和尘埃中形成空洞。图片来源:NASA、ESA、CSA、STScI

The bright, orange-coloured streaks signify the presence of carbon-based molecules known as polycyclic aromatic hydrocarbons, or PAHs. This material plays an important role in the interstellar medium and the formation of stars and 行星, but its origin is a mystery.  

The deeper red signifies molecular hydrogen as one travel farther from the immediate clearings of dust. This cooler gas is a prime environment for 明星 形成。 

精致的分辨率还提供了对以前与主云无关的功能的深入了解。例如,在韦伯的图像中,有两颗明亮的年轻恒星在中央星云上方的尘埃中凿出孔洞,通过弥漫的红色气体连接起来。在可见光成像中 哈勃 太空望远镜(HST),这些显示为单独的斑点。  

中红外视野:  

这张 NGC 604 的图像由 MIRI(中红外仪器)拍摄 西太平洋标准时间.  

中红外视野中的恒星明显较少,因为热恒星在这些波长下发出的光要少得多,而由较冷的气体和尘埃组成的较大云会发光。  

恒星形成区 NGC 604 的最新最详细图像
这张来自 NASA 詹姆斯·韦伯太空望远镜 MIRI(中红外仪器)的恒星形成区域 NGC 604 的图像显示了由较冷气体和尘埃组成的大云在中红外波长下发光的情况。这个区域拥有 200 多颗最热、质量最大的恒星,它们都处于生命的早期阶段。图片来源:NASA、ESA、CSA、STScI

Some of the stars seen in this image, belonging to the surrounding 星系, are red supergiants – stars that are cool but very large, hundreds of times the diameter of our Sun. Additionally, some of the background galaxies that appeared in the NIRCam image also fade.  

在 MIRI 图像中,材料的蓝色卷须表示多环芳烃的存在。 

中红外视图还展示了了解该区域多样化和动态活动的新视角。 

恒星形成区 NGC 604 

The star-forming region NGC 604 is estimated to be around 3.5 million years old. The cloud of glowing gases extends to some 1,300 light-years across. Located 2.73 million light-years away in the nearby Triangulum 星系, this region is large in extent and contains many more recently formed stars. Such regions are small-scale versions of more distant “starburst” galaxies, which underwent an extremely high rate of star formation. 

在其布满尘埃的气体包层中,有 200 多颗最热、质量最大的恒星,全部都处于生命的早期阶段。这些类型的恒星是B型和O型,后者的质量可以超过太阳质量的100倍。  

在附近发现如此集中的情况是相当罕见的 宇宙. In fact, there’s no similar region within our own Milky Way 星系

大质量恒星的集中,加上其相对较近的距离,意味着 NGC 604 为天文学家提供了在这些天体生命早期的迷人时期进行研究的机会。有时,以极高的分辨率研究附近天体(例如恒星形成区域 NGC 604)的能力可以帮助更好地了解更遥远的天体。 

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参考文献:  

太空望远镜科学研究所 (STScI) 2024 年。新闻稿 – 与 NASA 的韦伯一起观察 NGC 604 的卷须。 09 年 2024 月 XNUMX 日。可于 https://webbtelescope.org/contents/news-releases/2024/news-2024-110.html 

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赛欧团队
赛欧团队https://www.ScientificEuropean.co.uk
科学欧洲® | SCIEU.com | 科学的重大进步。 对人类的影响。 鼓舞人心。

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