| Reflection nebula | |
|---|---|
| emission nebula | |
 NGC 6729 is the bright fan like nebula at the center of the image. | |
| Observation data: J2000 epoch | |
| Right ascension | 19h 01m 54.1s [1] |
| Declination | −36° 57′ 12″ [1] |
| Apparent dimensions (V) | 2.5′ × 2.0′ [2] |
| Constellation | Corona Australis |
| Designations | Caldwell 68 |
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
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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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