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- IR_star abstract "An OH/IR star is an asymptotic giant branch (AGB) star that shows strong OH maser emission and is unusually bright at near-infrared wavelengths.In the very late stages of AGB evolution, a star develops a super-wind with extreme mass loss. The gas in the stellar wind condenses as it cools away from the star, forming molecules such as water (H2O) and silicon monoxide (SiO). This can form grains of dust, mostly silicates, which obscure the star at shorter wavelengths, leading to a strong infrared source. Hydroxyl (OH) radicals can be produced by photodissociation or collisional dissociation.H2O and OH can both be pumped to produce maser emission. OH masers in particular can give rise to a powerful maser action at 1612 MHz and this is regarded as a defining feature of the OH/IR stars. Many other AGB stars such as Mira variables show weaker OH masers at other wavelengths, such as 1667MHz or 22MHz.".
- IR_star wikiPageID "32087244".
- IR_star wikiPageLength "2079".
- IR_star wikiPageOutDegree "17".
- IR_star wikiPageRevisionID "664915701".
- IR_star wikiPageWikiLink Astrophysical_maser.
- IR_star wikiPageWikiLink Asymptotic_giant_branch.
- IR_star wikiPageWikiLink Category:Stellar_evolution.
- IR_star wikiPageWikiLink Circumstellar_dust.
- IR_star wikiPageWikiLink Hydroxyl_radical.
- IR_star wikiPageWikiLink Infrared.
- IR_star wikiPageWikiLink Maser.
- IR_star wikiPageWikiLink Mira_variable.
- IR_star wikiPageWikiLink Near-infrared.
- IR_star wikiPageWikiLink Photodissociation.
- IR_star wikiPageWikiLink Silicate.
- IR_star wikiPageWikiLink Silicon_monoxide.
- IR_star wikiPageWikiLink Star.
- IR_star wikiPageWikiLink Stellar_wind.
- IR_star wikiPageWikiLink Water.
- IR_star wikiPageWikiLinkText "OH/IR star".
- IR_star wikiPageWikiLinkText "OH/IR type".
- IR_star hasPhotoCollection IR_star.
- IR_star wikiPageUsesTemplate Template:Reflist.
- IR_star subject Category:Stellar_evolution.
- IR_star hypernym Star.
- IR_star type Article.
- IR_star type Star.
- IR_star type Article.
- IR_star type Astrophysic.
- IR_star comment "An OH/IR star is an asymptotic giant branch (AGB) star that shows strong OH maser emission and is unusually bright at near-infrared wavelengths.In the very late stages of AGB evolution, a star develops a super-wind with extreme mass loss. The gas in the stellar wind condenses as it cools away from the star, forming molecules such as water (H2O) and silicon monoxide (SiO).".
- IR_star label "OH/IR star".
- IR_star sameAs IR-Stern.
- IR_star sameAs IR-ster.
- IR_star sameAs m.0gwymy8.
- IR_star sameAs Q2007502.
- IR_star sameAs Q2007502.
- IR_star sameAs IR星.
- IR_star wasDerivedFrom IR_star?oldid=664915701.
- IR_star isPrimaryTopicOf IR_star.