NGC 6729 (also known as Caldwell 68) is a reflection/emission nebula of the Corona Australis Molecular Cloud in the constellation Corona Australis. It was discovered by Johann Friedrich Julius Schmidt in 1861.[1]
This fan-shaped nebula opens from the star R Coronae Australis toward the star T CrA to the south-east. R CrA is a pre-main-sequence star in the Corona Australis molecular complex, one of the closer star-forming regions of the galaxy at a distance of 130 pc.[1] NGC 6729 is a variable nebula which shows irregular variations in brightness and in shape.[3]
See also
- McNeil's Nebula
- NGC 1555 (Hind's Variable Nebula)
- NGC 2261 (Hubble's Variable Nebula)
References
- ^ a b c d "NGC/IC Project Database". Results for NGC 6729. Archived from the original on 2012-05-20. Retrieved 2010-12-09.
- ^ "NASA/IPAC Extragalactic Database". Results for NGC 6729. Retrieved 2010-12-09.
- ^ Robert Burnham, Jr.: Burnham's Celestial Handbook, Volume 2: Chamaeleon through Orion, pages 695-696: NGC 6726-6727-6729 and R Coronae Australis
External links
Media related to NGC 6729 at Wikimedia Commons- NGC 6729 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images
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