NGC6357 is located near the constellation Scorpius about 8000 light years away from the Earth. Because it looks like a powerful lobster in the visible image, it has earned the nickname of "lobster nebula".NGC6357 is full of gas clouds and tendril black dust.These clouds are breeding stars, including hot stars with dazzling blue and white light.[1]
NGC6357 is located near the constellation Scorpius about 8000 light years away from the Earth. It is called the "Lobster Nebula" because it looks like a powerful lobster in the visible light image.In 2013, the VISTA Infrared Survey Telescope of the European Southern Observatory captured the spectacular scene of hot gas clouds and tendril like dust surrounding hot young stars. The infrared image shows the surprising side of NGC6357.[1]
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NGC 6357
Because of the appearance of this nebula, scientists of space relay infrared experiment call itWar and Peace Nebula (War and Peace Nebula)。They said that in the infrared image, the bright west side looks like a dove, while the east side looks like a skull.This nebula contains manyProtostar, including oneOpen clusterPismis 24，And young stars surrounded by expanding cocoons.
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There is a bright young star named Pismis 24-1 in NGC6357 nebula.Previously, astronomers thought it was the largest known star. Later, astronomers found that this star was actually composed of at least three big stars.Although the mass of each star is less than 100 times the mass of our sun, these stars are still heavyweight.NASA/ESA Hubble Space Telescope and the European Southern Observatory's Very Large Telescope have also captured some images of NGC6357 nebula.But these two telescopes produce visible light images, which are strikingly different from the new infrared images.[1]
Open cluster
Pismis 24
Pismis 24, an open star cluster.The brightest star in this cluster isPismis 24-1, until it was found that each one had a mass of more than 100 solar massesConjoint starPreviously, it was thought that the mass was about 300 solar masses, possibly one of the most massive stars recorded.
Pismis 24-1 (i.eHD 319718）, YesDiffuse nebulaNGC 6357Open clusterPart of Pismis 24, 8150 from EarthLight year, the most massive and brightest star in Pismis 24, and also the brightest star knownfixed starone of.
G353.2+0.7
Young star clusterG353.2+0.7, located to the east of Pismis 24, and passing throughChandra X-ray(Chandra X-ray) image was found to have about 800 stars.
G353.1+0.36
Young star clusterG353.1+0.36, located in the southeast of Pismis 24, throughX-rayTests show that it contains about 800 stars.The area includes severalO star, including[BDSB2003] 10。
Observation parameters
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NGC 6357 YesGalaxyOne of the most prominent places for the formation of massive stars nearby.Various earlyO starLocated in this nebulaMolecular cloudIt can be seen that it is surrounded by bubblescluster。
