October 1, 2022


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Diffuse nebula “NGC 6357” captured by the Dark Energy Camera | sorae Portal Site to Space

【▲ 星雲 「NGC 6357 (Credit: CTIO/NOIRLab/DOE/NSF/AURA; TA Rector (University of Alaska Anchorage/NSF’s NOIRLab), J. Miller (Gemini Observatory/NSF’s NOIRLab), M. Zamani & D. de Martin (NSF’s NOIRLab))】】

This is about 8000 light-years away in the constellation ScorpiusThe astigmatism nebula “NGC 6357”Ho. NGC 6357, spread about 400 light-years across, emits red light from ionized hydrogen gas in the ultraviolet of young, massive stars.HI . areaIt is one where new stars are formed from gas and duststar formation fieldAlso known as this image was created by coloring and synthesizing images obtained through three types of visible light filters.Intricate vortex clouds of gas and dustIt not only shines inside and outside the nebulathousands of starspicked up or picked up.

This image shows the instrument installed in the Blanco 4m telescope at the Cerro Tololo Inter-American Observatory in Chile.Dark Energy Camera (DECam)Created based on monitoring data of Suggested Namedark energy (dark energy)DECam is a giant digital camera-like device (about 520 megapixels) capable of imaging an area (about 14 times the size of a full moon) (3 square degrees) simultaneously. Observations for dark energy research were conducted by DECam from 2013 to 2019.

Near the center of NGC 6357 is a massive star estimated to be 100 times the mass of the Sun, according to the National Institute of Optical and Infrared Astronomy (NOIRLab) of the National Science Foundation (NSF), which released the image.Open collection “Pismis 24”It is located.In addition, the area around the cluster is surrounded by gas and dust of high density, and it continues to grow.primordial starExist in large numbers. The complex structure within the nebula clearly captured by DECam is said to consist of intense pressure caused by the flow of interstellar matter, radiation from the star, and strong magnetic fields.

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The first image was released by NOIRLab on September 12, 2022 to celebrate the 10th anniversary of the first observation of DECam.

Connection:Spiral motion of stars and gases toward the center in a star forming region 200,000 light-years away


  • Image Credit: CTIO/NOIRLab/DOE/NSF/AURA; TA Rector (University of Alaska Anchorage/NSF’s NOIRLab), J. Miller (Gemini Observatory/NSF’s NOIRLab), M. Zamani & D. de Martin (NSF’s NOIRLab)
  • NOIRLab – The Dark Energy Camera captures bright young stars shining within the glowing nebula

Text / Matsumura Takehiro