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Created page with "{{Night Sky | image = | designation =NGC 3132<br/>PN G272.1+12.3<br/>PN ARO 504 | rightascension =10<sup>h</sup> 07<sup>m</sup> 01.7656<sup>s</sup><ref name..."
{{Night Sky
| image =
| designation =[[NGC]] 3132<br/>PN G272.1+12.3<br/>PN ARO 504
| rightascension =10<sup>h</sup> 07<sup>m</sup> 01.7656<sup>s</sup><ref name=simbad>{{cite web|url=https://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC+3132&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id|title=NGC 3132|accessdate=2019-08-20|work=Simbad Astronomical Database|publisher=simbad.u-strasbg.fr}}</ref><ref name=vizie>Gaia Colaboration. VizieR Online Data Catalog: Gaia DR2 (Gaia Collaboration, 2018). (2018). ''VizieR Online Data Catalog''. {{Bibcode|2018yCat.1345....0G}}</ref>
| declination =-40° 26′ 11.1389″<ref name=simbad/><ref name=vizie/>
| distance =2,000 ly<ref name=hubblesite>{{cite web|url=https://hubblesite.org/contents/media/images/1998/39/729-Image.html|title=A Glowing Pool Of Light: Planetary Nebula NGC 3132|accessdate=2019-08-20|publisher=hubblesite.org|date=1998-11-05}}</ref>
| constellation =Vela
| type =Planetary nebula
| dimensions =
| magnitude =Apparengt Mag: +8.2<ref>{{cite web|url=https://in-the-sky.org/data/object.php?id=NGC3132|title=The Eight Burst Nebula (Planetary Nebula)|accessdate=2019-08-20|publisher=in-the-sky.org}}</ref><br/>Absolute Mag: -0.7<ref>From direct calculation using distance of 2,000 ly and [[star magnitude|apparent magnitude]] of +8.2.</ref>
| redshift =
| radvelocity =49±36 km/s<ref name=simbad/><ref>
{{cite journal
|last1=Strauss |first1=M. A.
|last2=Huchra |first2=J. P.
|last3=Davis |first3=M.
|last4=Yahil |first4=A.
|last5=Fisher |first5=K. B.
|last6=Tonry |first6=J.
|display-authors=3
|title=A Redshift Survey of IRAS Galaxies. VII. The Infrared and Redshift Data for the 1.936 Jansky Sample
|journal=Astrophysical Journal Supplement
|volume=83
|page=29|date=1992
|doi=10.1086/191730
|bibcode=1992ApJS...83...29S
|ref=harv
}}</ref>
| propmotion =RA: -7.693 mas/yr<ref name=simbad/><ref name=vizie/><br/>Dec: 0.411 mas/yr<ref name=simbad/><ref name=vizie/>
| parallax =1.1567±0.0504 mas<ref name=simbad/><ref name=vizie/>
}}
The '''Eight-burst nebula''' ([[NGC]] 3132, PN G272.1+12.3, PN ARO 504) is a striking example of a [[planetary nebula]] in the [[constellation]] of [[Vela]].<ref name=hubblesite/> The nebula is one of the closest planetary nebulae to us; it only lies approximately 2,000 [[light year]]s away. The nebula contains various asymmetries and dust lanes that are unusual for this type of nebula.<ref name=apod>{{cite web|url=https://apod.nasa.gov/apod/ap150607.html|title=NGC 3132: The Eight Burst Nebula|accessdate=2019-08-20|publisher=apod.nasa.gov}}</ref> The name "eight-burst" derives from how it appears as a figure eight when observed through small telescopes.<ref>{{cite web|url=https://www.astrobin.com/338128/?nc=user|title=Eight Burst Nebula|accessdate=2019-08-20|publisher=astrobin.com}}</ref> The nebula is also occasionally refered to as the "Southern Ring" nebula by amateur astronomers as its low [[declination]] means it is only visible to astronomers in the Southern hemisphere.
==Properties and Structure==
The nebula is generally considered to be one of the closest planetary nebulae to [[Earth]] at around 2,000 light years.<ref name=hubblesite/> More recent [[parallax]] measurements of the nebula suggest it may actually lie a little further away at 2,800 light years, but it would still be one of the closest.<ref>From direct computation using the 2019 parallax value of 1.1567 milli-arcseconds.</ref> It is around 0.4 light years across and moving away from us at 49 km/s.<ref name=annesastronomynews>{{cite web|url=http://annesastronomynews.com/photo-gallery-ii/nebulae-clouds/ngc-3132/|title=NGC 3132, a bright planetary nebula in Vela|accessdate=2019-08-20|publisher=annesastronomynews.com}}</ref>
At the centre of the nebula is situated a [[Binary star|binary system]] composed of one tenth [[star magnitude|magnitude]] star (designated HD 87892) and the other a smaller 16<sup>th</sup> magnitude star.<ref name=daviddarling>{{cite web|url=http://www.daviddarling.info/encyclopedia/E/Eight-burst_Nebula.html|title=Eight-burst Nebula (NGC 3132)|accessdate=2019-08-20|publisher=daviddarling.info}}</ref> The small star is smaller than the [[Sun]] with an estimated radius 3.5% that of the sun's.<ref name=Kohoutek>
{{cite journal
|last1=Kohoutek |first1=L.
|last2=Laustsen |first2=S.
|title=Central star of NGC 3132 - A visual binary
|journal=Astronomy and Astrophysics
|volume=61
|issue=5|page=761-763|date=1977
|bibcode=1977A&A....61..761K
|ref=harv
}}</ref> However, it is much hotter with a surface temperature of some 100,000 degrees and has a [[luminosity]] roughly 110 times that of the Sun.<ref name=annesastronomynews/><ref name=Kohoutek/> Its surface radiates large amounts of [[ultraviolet]] radiation that [[ionization|ionizes]] the surrounding gas, causing it to glow. These gases are expanding outwards from the stars at roughly 9 miles per second.
The nebula has many features uncommon to planetary nebulae. First whereas planetary nebulae are generally very symmetrical, NGC 3132 possesses various asymmetries.<ref name=apod/> It also has cold dust lanes that can be easily observed in images and it is enveloped in a shell of cooler gas, none of which can be explained by secular science. This additional structure the nebula has cannot be seen in visual observations made through small telescopes using the unaided eye, but rather only in long exposure photographs.<ref name=daviddarling/>
==References==
{{reflist}}
{{Nebulae}}
[[Category:Astronomy]]
[[Category:Nebulae]]
| image =
| designation =[[NGC]] 3132<br/>PN G272.1+12.3<br/>PN ARO 504
| rightascension =10<sup>h</sup> 07<sup>m</sup> 01.7656<sup>s</sup><ref name=simbad>{{cite web|url=https://simbad.u-strasbg.fr/simbad/sim-id?Ident=NGC+3132&NbIdent=1&Radius=2&Radius.unit=arcmin&submit=submit+id|title=NGC 3132|accessdate=2019-08-20|work=Simbad Astronomical Database|publisher=simbad.u-strasbg.fr}}</ref><ref name=vizie>Gaia Colaboration. VizieR Online Data Catalog: Gaia DR2 (Gaia Collaboration, 2018). (2018). ''VizieR Online Data Catalog''. {{Bibcode|2018yCat.1345....0G}}</ref>
| declination =-40° 26′ 11.1389″<ref name=simbad/><ref name=vizie/>
| distance =2,000 ly<ref name=hubblesite>{{cite web|url=https://hubblesite.org/contents/media/images/1998/39/729-Image.html|title=A Glowing Pool Of Light: Planetary Nebula NGC 3132|accessdate=2019-08-20|publisher=hubblesite.org|date=1998-11-05}}</ref>
| constellation =Vela
| type =Planetary nebula
| dimensions =
| magnitude =Apparengt Mag: +8.2<ref>{{cite web|url=https://in-the-sky.org/data/object.php?id=NGC3132|title=The Eight Burst Nebula (Planetary Nebula)|accessdate=2019-08-20|publisher=in-the-sky.org}}</ref><br/>Absolute Mag: -0.7<ref>From direct calculation using distance of 2,000 ly and [[star magnitude|apparent magnitude]] of +8.2.</ref>
| redshift =
| radvelocity =49±36 km/s<ref name=simbad/><ref>
{{cite journal
|last1=Strauss |first1=M. A.
|last2=Huchra |first2=J. P.
|last3=Davis |first3=M.
|last4=Yahil |first4=A.
|last5=Fisher |first5=K. B.
|last6=Tonry |first6=J.
|display-authors=3
|title=A Redshift Survey of IRAS Galaxies. VII. The Infrared and Redshift Data for the 1.936 Jansky Sample
|journal=Astrophysical Journal Supplement
|volume=83
|page=29|date=1992
|doi=10.1086/191730
|bibcode=1992ApJS...83...29S
|ref=harv
}}</ref>
| propmotion =RA: -7.693 mas/yr<ref name=simbad/><ref name=vizie/><br/>Dec: 0.411 mas/yr<ref name=simbad/><ref name=vizie/>
| parallax =1.1567±0.0504 mas<ref name=simbad/><ref name=vizie/>
}}
The '''Eight-burst nebula''' ([[NGC]] 3132, PN G272.1+12.3, PN ARO 504) is a striking example of a [[planetary nebula]] in the [[constellation]] of [[Vela]].<ref name=hubblesite/> The nebula is one of the closest planetary nebulae to us; it only lies approximately 2,000 [[light year]]s away. The nebula contains various asymmetries and dust lanes that are unusual for this type of nebula.<ref name=apod>{{cite web|url=https://apod.nasa.gov/apod/ap150607.html|title=NGC 3132: The Eight Burst Nebula|accessdate=2019-08-20|publisher=apod.nasa.gov}}</ref> The name "eight-burst" derives from how it appears as a figure eight when observed through small telescopes.<ref>{{cite web|url=https://www.astrobin.com/338128/?nc=user|title=Eight Burst Nebula|accessdate=2019-08-20|publisher=astrobin.com}}</ref> The nebula is also occasionally refered to as the "Southern Ring" nebula by amateur astronomers as its low [[declination]] means it is only visible to astronomers in the Southern hemisphere.
==Properties and Structure==
The nebula is generally considered to be one of the closest planetary nebulae to [[Earth]] at around 2,000 light years.<ref name=hubblesite/> More recent [[parallax]] measurements of the nebula suggest it may actually lie a little further away at 2,800 light years, but it would still be one of the closest.<ref>From direct computation using the 2019 parallax value of 1.1567 milli-arcseconds.</ref> It is around 0.4 light years across and moving away from us at 49 km/s.<ref name=annesastronomynews>{{cite web|url=http://annesastronomynews.com/photo-gallery-ii/nebulae-clouds/ngc-3132/|title=NGC 3132, a bright planetary nebula in Vela|accessdate=2019-08-20|publisher=annesastronomynews.com}}</ref>
At the centre of the nebula is situated a [[Binary star|binary system]] composed of one tenth [[star magnitude|magnitude]] star (designated HD 87892) and the other a smaller 16<sup>th</sup> magnitude star.<ref name=daviddarling>{{cite web|url=http://www.daviddarling.info/encyclopedia/E/Eight-burst_Nebula.html|title=Eight-burst Nebula (NGC 3132)|accessdate=2019-08-20|publisher=daviddarling.info}}</ref> The small star is smaller than the [[Sun]] with an estimated radius 3.5% that of the sun's.<ref name=Kohoutek>
{{cite journal
|last1=Kohoutek |first1=L.
|last2=Laustsen |first2=S.
|title=Central star of NGC 3132 - A visual binary
|journal=Astronomy and Astrophysics
|volume=61
|issue=5|page=761-763|date=1977
|bibcode=1977A&A....61..761K
|ref=harv
}}</ref> However, it is much hotter with a surface temperature of some 100,000 degrees and has a [[luminosity]] roughly 110 times that of the Sun.<ref name=annesastronomynews/><ref name=Kohoutek/> Its surface radiates large amounts of [[ultraviolet]] radiation that [[ionization|ionizes]] the surrounding gas, causing it to glow. These gases are expanding outwards from the stars at roughly 9 miles per second.
The nebula has many features uncommon to planetary nebulae. First whereas planetary nebulae are generally very symmetrical, NGC 3132 possesses various asymmetries.<ref name=apod/> It also has cold dust lanes that can be easily observed in images and it is enveloped in a shell of cooler gas, none of which can be explained by secular science. This additional structure the nebula has cannot be seen in visual observations made through small telescopes using the unaided eye, but rather only in long exposure photographs.<ref name=daviddarling/>
==References==
{{reflist}}
{{Nebulae}}
[[Category:Astronomy]]
[[Category:Nebulae]]