Английская Википедия:Bubble Nebula

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Шаблон:Short description Шаблон:For Шаблон:Infobox nebula

NGC 7635, also known as the Bubble Nebula, Sharpless 162, or Caldwell 11, is an H II regionШаблон:Sfn emission nebula in the constellation Cassiopeia. It lies close to the open cluster Messier 52. The "bubble" is created by the stellar wind from a massive hot, 8.7Шаблон:Sfn magnitude young central star, SAO 20575 (BD+60°2522).Шаблон:Sfn The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow.Шаблон:Sfn It was discovered in November 1787 by William Herschel.[1] The star BD+60°2522 is thought to have a mass of about Шаблон:Solar mass.

Amateur observation

Файл:Bubble Nebula.jpg
NGC 7635 and its environs imaged through an 8-inch amateur telescope

With an Шаблон:Convert telescope, the nebula is visible as an extremely faint and large shell around the star.Шаблон:SfnШаблон:Sfn The nearby 7th magnitude star on the west hinders observation, but one can view the nebula using averted vision.Шаблон:Sfn Using a Шаблон:Convert scope, one can see that the faint nebula is irregular, being elongated in the north south direction.Шаблон:Sfn Шаблон:Clear left

See also

Notes

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References

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Шаблон:Sfn whitelist

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External links

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Шаблон:Catalogs Шаблон:Sh2 objects Шаблон:Caldwell catalogue Шаблон:Ngc80 Шаблон:Cassiopeia (constellation) Шаблон:Portal bar

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