| 词条 | NGC 6729 |
| 释义 |
| name = NGC 6729 | image = NGC_6729.jpg | caption = Very detailed false-colour image from ESO's VLT. | type = reflection | type2 = emission nebula | epoch = J2000 | ra = {{RA|19|01|54.1}}[1] | dec = {{DEC|-36|57|12}}[1] | dist_ly = | appmag_v = | size_v = 2.5′ × 2.0′[2] | constellation = Corona Australis | radius_ly = | notes = | names = Caldwell 68 }}NGC 6729 is a reflection/emission nebula 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] References1. ^1 2 3 {{cite web |title = NGC/IC Project Database |work = Results for NGC 6729 |url = http://www.ngcicproject.org/ngcicdb.asp |accessdate = 2010-12-09 |deadurl = yes |archiveurl = https://web.archive.org/web/20120520010558/http://www.ngcicproject.org/ngcicdb.asp |archivedate = 2012-05-20 |df = }} 2. ^{{cite web | title = NASA/IPAC Extragalactic Database | work = Results for NGC 6729 | url = http://nedwww.ipac.caltech.edu/cgi-bin/nph-objsearch?objname=NGC+6729 | accessdate = 2010-12-09 }} External links{{commonscat|NGC 6729}}
7 : Diffuse nebulae|Reflection nebulae|Emission nebulae|Caldwell objects|Corona Australis|Astronomical objects discovered in 1861|NGC objects |
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