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Created page with "{{Night Sky | image = | designation =NGC 6729 | rightascension =31<sup>h</sup> 01<sup>m</sup> 46.1<sup>s</sup><ref name=simbad>[http://simbad.u-strasbg.fr/s..."
{{Night Sky
| image =
| designation =[[NGC]] 6729
| rightascension =31<sup>h</sup> 01<sup>m</sup> 46.1<sup>s</sup><ref name=simbad>[http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC+6729&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id NGC 6729] from the [http://simbad.u-strasbg.fr/simbad SIMBAD Astronomical Database]</ref>
| declination =-36° 57′ 40″<ref name=simbad/>
| distance =420 ly<ref name=arxiv>Neuhäuser, R. and Forbrich, J. (2018). The Corona Australis Star Forming Region. [online] Arxiv.org. Available at: [https://arxiv.org/abs/0808.3374 arXiv:0808.3374] [Accessed 8 June 2018].</ref>
| constellation =Corona Australis
| type =Reflection nebula
| dimensions =1°
| magnitude =
| redshift =
| radvelocity =
| propmotion =
| parallax =
}}
The '''Corona Australis nebula''' is a [[reflection nebula]] in the [[constellation]] of [[Corona Australis]].<ref name=constellation-guide>[http://www.constellation-guide.com/constellation-list/corona-australis-constellation/ Corona Australis] from constellation-guide.com</ref> The nebula is designated NGC 6729 in the [[New General Catalogue]] and is associated with two nearby nebulae, NGC 6726 and NGC 6727. Discovered in 1861 by Johann Friedrich Julius Schmidt in [[Athens]], the nebula is known to contain several [[variable star]]s and [[Herbig–Haro object|Herbig-Haro object]]s.<ref name=apod>[https://apod.nasa.gov/apod/ap150108.html Stars and Dust in Corona Australis] from apod.nasa.gov</ref><ref>Knox Shaw, H. (1916). Note on the Variable Nebula in Corona Australis. ''Monthly Notices of the Royal Astronomical Society'', 76(8), pp.646-647. [http://adsabs.harvard.edu/abs/1920HelOB..20..182K Online]</ref>
==Properties and Structure==
The nebula is situated some 420 [[light year]]s from [[Earth]].<ref name=apod/> It has an apparent angular size of about 1 degree (12 times larger that a [[full Moon]]) or 9 light years across. The nebula contains [[gas]] as well as several clusters of [[star]]s, one example being the [[globular cluster]] NGC 6541.<ref name=universetoaday>[https://www.universetoday.com/20483/corona-australis-constellation/ Corona Australis constellation] from universetoday.com</ref> There is a large [[dust]] lane found in the vicinity of the nebula.
The nebula contains many [[Herbig–Haro object|Herbig–Haro objects]].<ref name=eso>[https://www.eso.org/public/news/eso1109/ NGC 6729] from eso.org</ref> The material ejected from stars within the nebula slams into the [[gas]] and dust that surrounds them. Travelling at speeds up to 1,000,000 kilometres per hour, the resulting shockwaves cause the gas to glow. This creates strange arcs and streaks of glowing gas and these are Herbig–Haro objects.
==References==
{{reflist}}
{{Nebulae}}
[[Category:Astronomy]]
[[Category:Nebulae]]
| image =
| designation =[[NGC]] 6729
| rightascension =31<sup>h</sup> 01<sup>m</sup> 46.1<sup>s</sup><ref name=simbad>[http://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC+6729&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id NGC 6729] from the [http://simbad.u-strasbg.fr/simbad SIMBAD Astronomical Database]</ref>
| declination =-36° 57′ 40″<ref name=simbad/>
| distance =420 ly<ref name=arxiv>Neuhäuser, R. and Forbrich, J. (2018). The Corona Australis Star Forming Region. [online] Arxiv.org. Available at: [https://arxiv.org/abs/0808.3374 arXiv:0808.3374] [Accessed 8 June 2018].</ref>
| constellation =Corona Australis
| type =Reflection nebula
| dimensions =1°
| magnitude =
| redshift =
| radvelocity =
| propmotion =
| parallax =
}}
The '''Corona Australis nebula''' is a [[reflection nebula]] in the [[constellation]] of [[Corona Australis]].<ref name=constellation-guide>[http://www.constellation-guide.com/constellation-list/corona-australis-constellation/ Corona Australis] from constellation-guide.com</ref> The nebula is designated NGC 6729 in the [[New General Catalogue]] and is associated with two nearby nebulae, NGC 6726 and NGC 6727. Discovered in 1861 by Johann Friedrich Julius Schmidt in [[Athens]], the nebula is known to contain several [[variable star]]s and [[Herbig–Haro object|Herbig-Haro object]]s.<ref name=apod>[https://apod.nasa.gov/apod/ap150108.html Stars and Dust in Corona Australis] from apod.nasa.gov</ref><ref>Knox Shaw, H. (1916). Note on the Variable Nebula in Corona Australis. ''Monthly Notices of the Royal Astronomical Society'', 76(8), pp.646-647. [http://adsabs.harvard.edu/abs/1920HelOB..20..182K Online]</ref>
==Properties and Structure==
The nebula is situated some 420 [[light year]]s from [[Earth]].<ref name=apod/> It has an apparent angular size of about 1 degree (12 times larger that a [[full Moon]]) or 9 light years across. The nebula contains [[gas]] as well as several clusters of [[star]]s, one example being the [[globular cluster]] NGC 6541.<ref name=universetoaday>[https://www.universetoday.com/20483/corona-australis-constellation/ Corona Australis constellation] from universetoday.com</ref> There is a large [[dust]] lane found in the vicinity of the nebula.
The nebula contains many [[Herbig–Haro object|Herbig–Haro objects]].<ref name=eso>[https://www.eso.org/public/news/eso1109/ NGC 6729] from eso.org</ref> The material ejected from stars within the nebula slams into the [[gas]] and dust that surrounds them. Travelling at speeds up to 1,000,000 kilometres per hour, the resulting shockwaves cause the gas to glow. This creates strange arcs and streaks of glowing gas and these are Herbig–Haro objects.
==References==
{{reflist}}
{{Nebulae}}
[[Category:Astronomy]]
[[Category:Nebulae]]