Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/BX_Circini> ?p ?o }
Showing triples 1 to 42 of
42
with 100 triples per page.
- BX_Circini abstract "BX Circini is a star in the constellation Circinus. Its variability was discovered in 1995, with its apparent magnitude ranging from 12.57 to 12.62 over a period of 2 hours 33 minutes. It is currently classified as a PV Telescopii variable star, but has been put forward as the prototype of a new class of pulsating star—the BX Circini variables—along with the only other known example, V652 Herculis. This class of star is rare, possibly because this is a brief stage of stellar evolution. Its mass has been calculated to be around 40% that of our Sun and the average surface temperature has been measured at 23,390 ±90 K using optical spectra, but 1750 K cooler if analysing it in both the visual and ultraviolet. The temperature appears to vary by 3450 K. It has an extremely low proportion of hydrogen, which was first noticed in 1980. In fact, over 99% of its composition appears to be helium, qualifying it as an extreme helium star. Its origin is unclear, but thought to be a result of the merger of a helium white dwarf with a carbon/oxygen one. The two merge violently, with material from the lighter helium white dwarf forming the outer envelope. The resulting star expands and shines as a yellow giant, its outer helium shell igniting and undergoing fusion as material continues to be accreted from the lighter star. The size of the star is maintained by the weight upon the helium shell, and once that has become light enough and the helium is exhausted, the star begins heating and shrinking, becoming the smaller blue star now observed.".
- BX_Circini wikiPageID "41731609".
- BX_Circini wikiPageLength "4960".
- BX_Circini wikiPageOutDegree "16".
- BX_Circini wikiPageRevisionID "680218018".
- BX_Circini wikiPageWikiLink Apparent_magnitude.
- BX_Circini wikiPageWikiLink Category:B-type_stars.
- BX_Circini wikiPageWikiLink Category:Circinus_(constellation).
- BX_Circini wikiPageWikiLink Category:Objects_named_with_variable_star_designations.
- BX_Circini wikiPageWikiLink Circinus.
- BX_Circini wikiPageWikiLink Constellation.
- BX_Circini wikiPageWikiLink Extreme_helium_star.
- BX_Circini wikiPageWikiLink Giant_star.
- BX_Circini wikiPageWikiLink Helium.
- BX_Circini wikiPageWikiLink Hydrogen.
- BX_Circini wikiPageWikiLink PV_Telescopii_variable.
- BX_Circini wikiPageWikiLink Star.
- BX_Circini wikiPageWikiLink V652_Herculis.
- BX_Circini wikiPageWikiLink Variable_star.
- BX_Circini wikiPageWikiLink White_dwarf.
- BX_Circini wikiPageWikiLinkText "BX Cir".
- BX_Circini wikiPageWikiLinkText "BX Circini".
- BX_Circini constell Circinus.
- BX_Circini name "BX Circini".
- BX_Circini type "B+".
- BX_Circini wikiPageUsesTemplate Template:DEC.
- BX_Circini wikiPageUsesTemplate Template:RA.
- BX_Circini wikiPageUsesTemplate Template:Reflist.
- BX_Circini wikiPageUsesTemplate Template:Starbox_short.
- BX_Circini wikiPageUsesTemplate Template:Stars_of_Circinus.
- BX_Circini subject Category:B-type_stars.
- BX_Circini subject Category:Circinus_(constellation).
- BX_Circini subject Category:Objects_named_with_variable_star_designations.
- BX_Circini hypernym Star.
- BX_Circini type Star.
- BX_Circini comment "BX Circini is a star in the constellation Circinus. Its variability was discovered in 1995, with its apparent magnitude ranging from 12.57 to 12.62 over a period of 2 hours 33 minutes. It is currently classified as a PV Telescopii variable star, but has been put forward as the prototype of a new class of pulsating star—the BX Circini variables—along with the only other known example, V652 Herculis. This class of star is rare, possibly because this is a brief stage of stellar evolution.".
- BX_Circini label "BX Circini".
- BX_Circini sameAs Q17027717.
- BX_Circini sameAs m.0_fvbk5.
- BX_Circini sameAs Q17027717.
- BX_Circini wasDerivedFrom BX_Circini?oldid=680218018.
- BX_Circini isPrimaryTopicOf BX_Circini.