SkipCaptcha
1,279
edits
Changes
Jump to navigation
Jump to search
Created page with "{{Night Sky | image = | designation =Hen 3-1357<br/>PN G331.3-12.1 | rightascension =17<sup>h</sup> 16<sup>m</sup> 21.071<sup>s</sup><ref name=constellation-gui..."
{{Night Sky
| image =
| designation =Hen 3-1357<br/>PN G331.3-12.1
| rightascension =17<sup>h</sup> 16<sup>m</sup> 21.071<sup>s</sup><ref name=constellation-guide>[http://www.constellation-guide.com/stingray-nebula-hen-3-1357-pn-g331-in-ara/ Stingray Nebula (Hen 3-1357, PN G331) in Ara] from constellation-guide.com</ref>
| declination =-59° 29′ 23.64″<ref name=constellation-guide/>
| distance =18,000 ly<ref name=constellation-guide/>
| constellation =Ara
| type =Planetary nebula
| dimensions =
| magnitude =Apparent Mag: +10.75<ref name=constellation-guide/>
| redshift =0.000042±0.000006<ref name=simbad>[http://simbad.u-strasbg.fr/simbad/sim-id?Ident=PN+G331.3-12.1&submit=submit+id PN G331.3-12.1] from simbad.u-strasbg.fr</ref>
| radvelocity =12.6±1.7 km/s<ref name=simbad/>
| propmotion =RA: -0.8 mas/yr<ref name=simbad/><br/>Dec.: -4.0 mas/yr<ref name=simbad/>
| parallax =
}}
The '''Stingray nebula''' (Hen 3-1357, PN G331.3-12.1) is a [[planetary nebula]] in the [[constellation]] of [[Ara]].<ref name=constellation-guide/> It is thought by some to have formed recently, at some point between 1967 and 1990. The [[astronomer]] Karl Gordon Henize observed and classified a star at the centre of the nebula in 1967 but no nebula was spotted but later in 1990, the [[Hubble Space Telescope]] observed a nebula surrounding the central star.<ref name=constellation-guide/>However, this may simply be due to the nebula being extremely faint and also extremely small dimensions on the night sky (roughly 1.8 arcseconds) and so it wasn't until Hubble that it was possible to detect it.<ref>[http://www.esa.int/Our_Activities/Space_Science/Extreme_space/Stingray_Nebula_Henize_1357 Stingray Nebula (Henize 1357)] from esa.int</ref>
==Properties and Structure==
Located 18,000 [[light year]]s away, the nebula is around 0.16 light years across (around 130 times larger than the [[Solar System]]) which is about ten times smaller than most planetary nebulae.<ref name=annesastronomynews>[http://annesastronomynews.com/photo-gallery-ii/nebulae-clouds/the-stingray-nebula-hen-3-1357-is-the-youngest-known-planetary-nebula-18000-ly-away-in-ara-the-bright-central-white-dwarf-is-in-the-middle-of-the-green-ring-of-gas-its-companion-star-is-at-10-o/ The Stingray Nebula, a young planetary nebula in Ara.] from annesastronomynews.com</ref> There is a central [[white dwarf|white dwarf star]] in the nebula which has decreased in luminosity threefold since 1987.<ref name=annesastronomynews/> The star is joined by a companion star, making it a [[binary star|binary system]]. The [[gravity|gravitational attraction]] between the two stars is causing a "bridge" of green [[gas]] to form between them.
The radiation emitted by these two stars ionizes the gas enveloping the two stars causing it to glow. The colors in the image are due to the [[ionization]] of [[hydrogen]] (blue), [[nitrogen]] (red) and [[oxygen]] (green).<ref>[https://www.nasa.gov/multimedia/imagegallery/image_feature_919.html Stingray Nebula] from nasa.gov</ref> The [[stellar wind]] generated by the central star has begun to blow away the surrounding material, creating bubbles. The red lines indicate where the "shock" of this stellar wind has hit the walls of these bubbles, heating the gas there up.<ref name=annesastronomynews/>
==References==
{{reflist}}
{{Nebulae}}
[[Category:Astronomy]]
[[Category:Nebulae]]
| image =
| designation =Hen 3-1357<br/>PN G331.3-12.1
| rightascension =17<sup>h</sup> 16<sup>m</sup> 21.071<sup>s</sup><ref name=constellation-guide>[http://www.constellation-guide.com/stingray-nebula-hen-3-1357-pn-g331-in-ara/ Stingray Nebula (Hen 3-1357, PN G331) in Ara] from constellation-guide.com</ref>
| declination =-59° 29′ 23.64″<ref name=constellation-guide/>
| distance =18,000 ly<ref name=constellation-guide/>
| constellation =Ara
| type =Planetary nebula
| dimensions =
| magnitude =Apparent Mag: +10.75<ref name=constellation-guide/>
| redshift =0.000042±0.000006<ref name=simbad>[http://simbad.u-strasbg.fr/simbad/sim-id?Ident=PN+G331.3-12.1&submit=submit+id PN G331.3-12.1] from simbad.u-strasbg.fr</ref>
| radvelocity =12.6±1.7 km/s<ref name=simbad/>
| propmotion =RA: -0.8 mas/yr<ref name=simbad/><br/>Dec.: -4.0 mas/yr<ref name=simbad/>
| parallax =
}}
The '''Stingray nebula''' (Hen 3-1357, PN G331.3-12.1) is a [[planetary nebula]] in the [[constellation]] of [[Ara]].<ref name=constellation-guide/> It is thought by some to have formed recently, at some point between 1967 and 1990. The [[astronomer]] Karl Gordon Henize observed and classified a star at the centre of the nebula in 1967 but no nebula was spotted but later in 1990, the [[Hubble Space Telescope]] observed a nebula surrounding the central star.<ref name=constellation-guide/>However, this may simply be due to the nebula being extremely faint and also extremely small dimensions on the night sky (roughly 1.8 arcseconds) and so it wasn't until Hubble that it was possible to detect it.<ref>[http://www.esa.int/Our_Activities/Space_Science/Extreme_space/Stingray_Nebula_Henize_1357 Stingray Nebula (Henize 1357)] from esa.int</ref>
==Properties and Structure==
Located 18,000 [[light year]]s away, the nebula is around 0.16 light years across (around 130 times larger than the [[Solar System]]) which is about ten times smaller than most planetary nebulae.<ref name=annesastronomynews>[http://annesastronomynews.com/photo-gallery-ii/nebulae-clouds/the-stingray-nebula-hen-3-1357-is-the-youngest-known-planetary-nebula-18000-ly-away-in-ara-the-bright-central-white-dwarf-is-in-the-middle-of-the-green-ring-of-gas-its-companion-star-is-at-10-o/ The Stingray Nebula, a young planetary nebula in Ara.] from annesastronomynews.com</ref> There is a central [[white dwarf|white dwarf star]] in the nebula which has decreased in luminosity threefold since 1987.<ref name=annesastronomynews/> The star is joined by a companion star, making it a [[binary star|binary system]]. The [[gravity|gravitational attraction]] between the two stars is causing a "bridge" of green [[gas]] to form between them.
The radiation emitted by these two stars ionizes the gas enveloping the two stars causing it to glow. The colors in the image are due to the [[ionization]] of [[hydrogen]] (blue), [[nitrogen]] (red) and [[oxygen]] (green).<ref>[https://www.nasa.gov/multimedia/imagegallery/image_feature_919.html Stingray Nebula] from nasa.gov</ref> The [[stellar wind]] generated by the central star has begun to blow away the surrounding material, creating bubbles. The red lines indicate where the "shock" of this stellar wind has hit the walls of these bubbles, heating the gas there up.<ref name=annesastronomynews/>
==References==
{{reflist}}
{{Nebulae}}
[[Category:Astronomy]]
[[Category:Nebulae]]