SkipCaptcha
1,279
edits
Changes
Jump to navigation
Jump to search
Created page with "{{Night Sky | image = | designation =IRAS 06176-1036<br/>HD 44179 | rightascension =06<sup>h</sup> 19<sup>m</sup> 58.20<sup>s</sup><ref name=simbad>[http://simb..."
{{Night Sky
| image =
| designation =IRAS 06176-1036<br/>HD 44179
| rightascension =06<sup>h</sup> 19<sup>m</sup> 58.20<sup>s</sup><ref name=simbad>[http://simbad.u-strasbg.fr/simbad/sim-id?Ident=IRAS+06176-1036&submit=submit+id HD 44179] from the [http://simbad.u-strasbg.fr/simbad SIMBAD Astronomical Database]</ref>
| declination =-10° 38′ 15.06″<ref name=simbad/>
| distance =2,772 ly<ref name=dist>Vickers, S., Frew, D., Parker, Q. and Bojičić, I. (2014). New light on Galactic post-asymptotic giant branch stars – I. First distance catalogue. ''Monthly Notices of the Royal Astronomical Society'', 447(2), pp.1673-1691. [https://arxiv.org/abs/1403.7230 arXiv:1403.7230 <nowiki>[astro-ph.SR]</nowiki>]</ref>
| constellation =Monoceros
| type =Protoplanetary nebula
| dimensions =
| magnitude =Apparent Mag: +9<ref name=astronomy.com>{{cite web|url=http://www.astronomy.com/magazine/weirdest-objects/2015/12/4-red-rectangle-nebula|title=Weird Object: Red Rectangle Nebula|accessdate=2019-01-24}}</ref><br/>Absoulte Mag: -0.6<ref>By direct calculation using apparent magnitude of +9 and distance of 2,772 ly.</ref>
| redshift =
| radvelocity =21.50 km/s<ref name=simbad/>
| propmotion =RA: -6.46 mas/yr<ref name=simbad/><br/>Dec.: -22.74 mas/yr<ref name=simbad/>
| parallax =2.27±2.28 mas<ref name=simbad/>
}}
The '''Red rectangle nebula''' (IRAS 06176-1036, binary system designated HD 44179) is a [[protoplanetary nebula]] in the [[constellation]] of [[Monoceros]], the [[unicorn]].<ref name=apod>{{cite web|url=https://apod.nasa.gov/apod/ap180509.html|title=The Red Rectangle Nebula from Hubble|accessdate=2019-01-24}}</ref> The [[binary star]] at its core was first observed in 1915 by Robert Grant Aitken but it wasn't until 1973 that the surrounding nebula was observed during an [[infrared]] sky survey.<ref name=astronomy.com/> It is noteworthy for seeming to have a rectangular structure in early images, though more recent images taken by the [[Hubble Space Telescope]] have shown it to look more like the letter "X".<ref name=nasa>{{cite web|url=https://www.nasa.gov/image-feature/goddard/2016/hubble-frames-a-unique-red-rectangle|title=Hubble Frames a Unique Red Rectangle|accessdate=2019-01-24}}</ref> Lines of [[gas]] can also be seen in the nebula similar to the rungs of a ladder. It is thought this structure is due to a thick [[torus]] of dust that envelopes the central [[binary star]]. This "pinches" the outflow of material into two [[cones]] pointing in opposite directions instead of a spherically symmetric output. The toriodal dust structure is viewed edge on from [[Earth]], resulting in the cones producing an "X" shape. The color of the nebula has been speculated to be caused by the presence of [[hydrocarbon]]s in the nebula, but is unknown.<ref name=apod/>
The nebula is thought to be around 2,772 [[light year]]s from Earth, though some estimates are lower at approximately 2,300 ly.<ref name=dist/><ref name=nasa/> It's temperature is estimated to be 264-607 kelvin and its [[luminosity]] at 6,000 times that of the [[Sun]].<ref name=dist/>
==References==
{{reflist}}
{{nebulae}}
[[Category:Astronomy]]
[[Category:Nebulae]]
| image =
| designation =IRAS 06176-1036<br/>HD 44179
| rightascension =06<sup>h</sup> 19<sup>m</sup> 58.20<sup>s</sup><ref name=simbad>[http://simbad.u-strasbg.fr/simbad/sim-id?Ident=IRAS+06176-1036&submit=submit+id HD 44179] from the [http://simbad.u-strasbg.fr/simbad SIMBAD Astronomical Database]</ref>
| declination =-10° 38′ 15.06″<ref name=simbad/>
| distance =2,772 ly<ref name=dist>Vickers, S., Frew, D., Parker, Q. and Bojičić, I. (2014). New light on Galactic post-asymptotic giant branch stars – I. First distance catalogue. ''Monthly Notices of the Royal Astronomical Society'', 447(2), pp.1673-1691. [https://arxiv.org/abs/1403.7230 arXiv:1403.7230 <nowiki>[astro-ph.SR]</nowiki>]</ref>
| constellation =Monoceros
| type =Protoplanetary nebula
| dimensions =
| magnitude =Apparent Mag: +9<ref name=astronomy.com>{{cite web|url=http://www.astronomy.com/magazine/weirdest-objects/2015/12/4-red-rectangle-nebula|title=Weird Object: Red Rectangle Nebula|accessdate=2019-01-24}}</ref><br/>Absoulte Mag: -0.6<ref>By direct calculation using apparent magnitude of +9 and distance of 2,772 ly.</ref>
| redshift =
| radvelocity =21.50 km/s<ref name=simbad/>
| propmotion =RA: -6.46 mas/yr<ref name=simbad/><br/>Dec.: -22.74 mas/yr<ref name=simbad/>
| parallax =2.27±2.28 mas<ref name=simbad/>
}}
The '''Red rectangle nebula''' (IRAS 06176-1036, binary system designated HD 44179) is a [[protoplanetary nebula]] in the [[constellation]] of [[Monoceros]], the [[unicorn]].<ref name=apod>{{cite web|url=https://apod.nasa.gov/apod/ap180509.html|title=The Red Rectangle Nebula from Hubble|accessdate=2019-01-24}}</ref> The [[binary star]] at its core was first observed in 1915 by Robert Grant Aitken but it wasn't until 1973 that the surrounding nebula was observed during an [[infrared]] sky survey.<ref name=astronomy.com/> It is noteworthy for seeming to have a rectangular structure in early images, though more recent images taken by the [[Hubble Space Telescope]] have shown it to look more like the letter "X".<ref name=nasa>{{cite web|url=https://www.nasa.gov/image-feature/goddard/2016/hubble-frames-a-unique-red-rectangle|title=Hubble Frames a Unique Red Rectangle|accessdate=2019-01-24}}</ref> Lines of [[gas]] can also be seen in the nebula similar to the rungs of a ladder. It is thought this structure is due to a thick [[torus]] of dust that envelopes the central [[binary star]]. This "pinches" the outflow of material into two [[cones]] pointing in opposite directions instead of a spherically symmetric output. The toriodal dust structure is viewed edge on from [[Earth]], resulting in the cones producing an "X" shape. The color of the nebula has been speculated to be caused by the presence of [[hydrocarbon]]s in the nebula, but is unknown.<ref name=apod/>
The nebula is thought to be around 2,772 [[light year]]s from Earth, though some estimates are lower at approximately 2,300 ly.<ref name=dist/><ref name=nasa/> It's temperature is estimated to be 264-607 kelvin and its [[luminosity]] at 6,000 times that of the [[Sun]].<ref name=dist/>
==References==
{{reflist}}
{{nebulae}}
[[Category:Astronomy]]
[[Category:Nebulae]]