IC 417, the Spider Nebula (RGB-HO) (José Manuel López Arlandis)

Celestial hemisphere: Northern · Constellation: Auriga (Aur) · Contains: 24 Aur · IC 417 · The star φ Aur

IC 417, the Spider Nebula (RGB-HO), José Manuel López Arlandis

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IC 417, the Spider Nebula (RGB-HO)

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IC 417, the Spider Nebula (RGB-HO)

IC 417 is an emission nebula with reflection regions located in Auriga. It was discovered in 1892 by the German astronomer Max Wolf. It contains the open cluster Stock 8. It is formed by about 40-50 young stars (about 3 million years old), blue stars of spectral type O and B, massive and hot, which are the ones that ionize the hydrogen in the nebula. The cluster contains two stars of visual magnitude 10 and the rest between 12 and 14. IC 417 is known as the Spider Nebula. I suppose that the body of the spider would be the bluish reflection core, and the legs would be the emission extensions that appear to originate from this core. The set is on the left side of the image. The orange star in the center and above is phi Aurigae, an orange giant star of spectral type K and magnitude 5. This star does not belong to Stock 8, and is much closer to us, about 450 light years away.

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IC 417, the Spider Nebula (RGB-HO)

IC 417, the Spider Nebula (RGB-HO)

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IC 417, the Spider Nebula (RGB-HO)

IC 417, the Spider Nebula (RGB-HO)

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