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- AG_Pegasi abstract "AG Pegasi is a symbiotic binary star in the constellation Pegasus. It is a close binary composed of a red giant and white dwarf, estimated to be around 2.5 and 0.6 times the mass of the Sun respectively.Initially a magnitude 9 star, AG Pegasi brightened and peaked at an apparent magnitude of 6.0 around 1885 before gradually fading to magnitude 9 in the late 20th century. Its spectrum was noted by earlier observers to resemble P Cygni. The spectrum of the hotter star has changed drastically over 160 years, leading investigators Scott Kenyon and colleagues to surmise that its hotter component, originally a white dwarf, accumulated enough material from the donor giant star to begin burning hydrogen and enlarge and brighten into an A-type white supergiant around 1850. It had this spectrum and an estimated surface temperature of around 10000 K in 1900, with a likely radius 16 times that of the Sun, before becoming a B-class star in 1920, then an O-class star in 1940, and finally a Wolf-Rayet star in 1970, with a surface temperature of 95000 K since 1978. It has shrunk to star with a diameter 1.1 times that of the Sun in 1949, then 0.15 times in 1978 and 0.08 times that of the Sun in 1990. AG Pegasi has been described as the slowest nova ever recorded, with a constant bolometric luminosity of the hotter star over 130 years from 1850 to 1980. By the late 20th century, the hotter star has evolved into a hot subdwarf on its way to eventually returning to white dwarf status.Vogel and colleagues calculated the hotter star must have been accreting material from the red giant for around 5000 years before erupting. Both stars are ejecting material in stellar winds. The resulting nebula contains material from both stars and is complex in nature.".
- AG_Pegasi wikiPageID "41930701".
- AG_Pegasi wikiPageLength "5401".
- AG_Pegasi wikiPageOutDegree "26".
- AG_Pegasi wikiPageRevisionID "707903728".
- AG_Pegasi wikiPageWikiLink Apparent_magnitude.
- AG_Pegasi wikiPageWikiLink Category:Durchmusterung_objects.
- AG_Pegasi wikiPageWikiLink Category:Henry_Draper_Catalogue_objects.
- AG_Pegasi wikiPageWikiLink Category:Hipparcos_objects.
- AG_Pegasi wikiPageWikiLink Category:M-type_giants.
- AG_Pegasi wikiPageWikiLink Category:Objects_named_with_variable_star_designations.
- AG_Pegasi wikiPageWikiLink Category:Pegasus_(constellation).
- AG_Pegasi wikiPageWikiLink Category:Symbiotic_novae.
- AG_Pegasi wikiPageWikiLink Category:Wolf–Rayet_stars.
- AG_Pegasi wikiPageWikiLink Constellation.
- AG_Pegasi wikiPageWikiLink Durchmusterung.
- AG_Pegasi wikiPageWikiLink Henry_Draper_Catalogue.
- AG_Pegasi wikiPageWikiLink Hipparcos.
- AG_Pegasi wikiPageWikiLink Luminosity.
- AG_Pegasi wikiPageWikiLink Nova.
- AG_Pegasi wikiPageWikiLink P_Cygni.
- AG_Pegasi wikiPageWikiLink Pegasus_(constellation).
- AG_Pegasi wikiPageWikiLink Red_giant.
- AG_Pegasi wikiPageWikiLink Smithsonian_Astrophysical_Observatory_Star_Catalog.
- AG_Pegasi wikiPageWikiLink Star.
- AG_Pegasi wikiPageWikiLink Subdwarf.
- AG_Pegasi wikiPageWikiLink Symbiotic_nova.
- AG_Pegasi wikiPageWikiLink White_dwarf.
- AG_Pegasi wikiPageWikiLink Wolf–Rayet_star.
- AG_Pegasi wikiPageWikiLinkText "AG Pegasi".
- AG_Pegasi absmagV "/-1.0".
- AG_Pegasi appmagV "var".
- AG_Pegasi bV "0.76".
- AG_Pegasi class "var + M3III".
- AG_Pegasi component "AG Peggiant".
- AG_Pegasi component "AG Peghot".
- AG_Pegasi constell Pegasus_(constellation).
- AG_Pegasi distPc "1000".
- AG_Pegasi epoch "J2000".
- AG_Pegasi gravity "6".
- AG_Pegasi luminosity "1150".
- AG_Pegasi luminosity "400".
- AG_Pegasi mass "0.6".
- AG_Pegasi mass "2.5".
- AG_Pegasi pError "1.04".
- AG_Pegasi parallax "-1.58".
- AG_Pegasi propMoDec "-1.8".
- AG_Pegasi propMoRa "-0.77".
- AG_Pegasi radialV "−15.86".
- AG_Pegasi radius "0.08".
- AG_Pegasi radius "85".
- AG_Pegasi temperature "10000".
- AG_Pegasi temperature "3650".
- AG_Pegasi variable Symbiotic_nova.
- AG_Pegasi wikiPageUsesTemplate Template:DEC.
- AG_Pegasi wikiPageUsesTemplate Template:RA.
- AG_Pegasi wikiPageUsesTemplate Template:Reflist.
- AG_Pegasi wikiPageUsesTemplate Template:Starbox_astrometry.
- AG_Pegasi wikiPageUsesTemplate Template:Starbox_begin.
- AG_Pegasi wikiPageUsesTemplate Template:Starbox_catalog.
- AG_Pegasi wikiPageUsesTemplate Template:Starbox_character.
- AG_Pegasi wikiPageUsesTemplate Template:Starbox_detail.
- AG_Pegasi wikiPageUsesTemplate Template:Starbox_end.
- AG_Pegasi wikiPageUsesTemplate Template:Starbox_image.
- AG_Pegasi wikiPageUsesTemplate Template:Starbox_observe.
- AG_Pegasi wikiPageUsesTemplate Template:Starbox_reference.
- AG_Pegasi wikiPageUsesTemplate Template:Stars_of_Pegasus.
- AG_Pegasi subject Category:Durchmusterung_objects.
- AG_Pegasi subject Category:Henry_Draper_Catalogue_objects.
- AG_Pegasi subject Category:Hipparcos_objects.
- AG_Pegasi subject Category:M-type_giants.
- AG_Pegasi subject Category:Objects_named_with_variable_star_designations.
- AG_Pegasi subject Category:Pegasus_(constellation).
- AG_Pegasi subject Category:Symbiotic_novae.
- AG_Pegasi subject Category:Wolf–Rayet_stars.
- AG_Pegasi hypernym Star.
- AG_Pegasi type CelestialBody.
- AG_Pegasi type Place.
- AG_Pegasi type Star.
- AG_Pegasi type Location.
- AG_Pegasi type Place.
- AG_Pegasi type Thing.
- AG_Pegasi comment "AG Pegasi is a symbiotic binary star in the constellation Pegasus. It is a close binary composed of a red giant and white dwarf, estimated to be around 2.5 and 0.6 times the mass of the Sun respectively.Initially a magnitude 9 star, AG Pegasi brightened and peaked at an apparent magnitude of 6.0 around 1885 before gradually fading to magnitude 9 in the late 20th century. Its spectrum was noted by earlier observers to resemble P Cygni.".
- AG_Pegasi label "AG Pegasi".
- AG_Pegasi sameAs Q16002025.
- AG_Pegasi sameAs m.0_qfdm_.
- AG_Pegasi sameAs Q16002025.
- AG_Pegasi wasDerivedFrom AG_Pegasi?oldid=707903728.
- AG_Pegasi isPrimaryTopicOf AG_Pegasi.
- AG_Pegasi name "AG Pegasi".