2022年9月20日


特色图像以多种假色显示了恒星形成区NGC 3576。 中央尘埃结构可能看起来类似于自由女神像。请参阅说明以获取更多详细信息。

Star Forming Region NGC 3582 without Stars
Image Credit & Copyright:
Chris Willocks

Explanation: What’s happening in the Statue of Liberty nebula? Bright stars and interesting molecules are forming and being liberated. The complex nebula resides in the star forming region called RCW 57, and besides the iconic monument, to some looks like a flying superhero or a weeping angel. By digitally removing the stars, this re-assigned color image showcases dense knots of dark interstellar dust, fields of glowing hydrogen gas ionized by these stars, and great loops of gas expelled by dying stars. A detailed study of NGC 3576, also known as NGC 3582 and NGC 3584, uncovered at least 33 massive stars in the end stages of formation, and the clear presence of the complex carbon molecules known as polycyclic aromatic hydrocarbons (PAHs). PAHs are thought to be created in the cooling gas of star forming regions, and their development in the Sun’s formation nebula five billion years ago may have been an important step in the development of life on Earth.

Your Sky Surprise: What picture did APOD feature on your birthday? (post 1995)

Tomorrow’s picture: horse red nebula


移除恒星的恒星形成区NGC 3582
影像提供与版权:
Chris Willocks

说明: 自由女神像星云内发生了什么事?它正在形成和释放出亮星和有趣的分子。这个复杂的星云位于名为RCW 57的恒星形成区域内,而除了形似自由女神之外,还有一些人,会认为它形似飞天的超级英雄或哭泣的天使。在使用数字化技术移除恒星之后,这幅重新配色的彩色影像,突显了致密的暗星际尘埃结、受到恒星电离的大片明亮氢气、及垂死恒星喷出的庞大气体环。针对NGC 3576(亦称为NGC 3582和NGC 3584)所进行的详细探索,找到了至少33颗处于形成阶段末期的大质量恒星,以及名为多环芳烃 (PAH) 的复杂碳分子存在的明确迹证。多环芳烃咸认会形成于恒星形成区的降温气体里,而50亿年前它们在孕育太阳的星云里出现,可能是地球生命发展的重要环结。

你的天空惊喜: APOD在你生日那天拍了什么照片?(1995年后)

明日的图片: horse red nebula

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