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- Theta_Tucanae abstract "Theta Tucanae (θ Tuc, θ Tucanae) is a star in the constellation Tucana.Like other stars in Tucana, it was given its Bayer designation by French explorer and astronomer Nicolas Louis de Lacaille in 1756. It was found to be variable in 1971.Theta Tucanae is a white A-type subgiant of spectral type A7IV with a mean apparent magnitude of +6.11, located approximately 423 light years from Earth. It is classified as a Delta Scuti type variable star and its brightness varies from magnitude +6.06 to +6.15 with periods of around 70 to 80 minutes. These Delta Scuti variables are a class of short-period (six hours at most) pulsating stars that have been used as standard candles and as subjects to study astroseismology.Observations over the decades have shown that its colour slightly changes and it exhibits variation in light that indicate the star is actually an ellipsoidal binary with a period of seven days. The system is more luminous than expected, given the spectrum and distance of the primary star, indicating that the companion star must be contributing a good proportion of its light. Stellar evolution modelling has concluded that the system likely begun as a binary system, with one star about double the Sun's mass and the other roughly equivalent to that of the sun. The larger star eventually aged and expanded as it used up its core hydrogen, and begun having its mass siphoned off by the smaller star; the system is likely to have been an Algol-type eclipsing binary at this stage. This star appears now to be an aged star composed mostly of helium with very little hydrogen and with a mass of 0.2 solar masses and around 37 times the luminosity of our Sun and surface temperature of 7000 K, while the once-smaller star is the Delta Scuti variable that is now around two solar masses. Around 0.8 solar masses has been lost from the system over time.".
- Theta_Tucanae wikiPageID "2702775".
- Theta_Tucanae wikiPageLength "5129".
- Theta_Tucanae wikiPageOutDegree "29".
- Theta_Tucanae wikiPageRevisionID "660608247".
- Theta_Tucanae wikiPageWikiLink Algol_variable.
- Theta_Tucanae wikiPageWikiLink Apparent_magnitude.
- Theta_Tucanae wikiPageWikiLink Asteroseismology.
- Theta_Tucanae wikiPageWikiLink Bayer_designation.
- Theta_Tucanae wikiPageWikiLink Binary_system.
- Theta_Tucanae wikiPageWikiLink Category:A-type_subgiants.
- Theta_Tucanae wikiPageWikiLink Category:Bayer_objects.
- Theta_Tucanae wikiPageWikiLink Category:Delta_Scuti_variables.
- Theta_Tucanae wikiPageWikiLink Category:Tucana_(constellation).
- Theta_Tucanae wikiPageWikiLink Constellation.
- Theta_Tucanae wikiPageWikiLink Cosmic_distance_ladder.
- Theta_Tucanae wikiPageWikiLink Delta_Scuti_variable.
- Theta_Tucanae wikiPageWikiLink Earth.
- Theta_Tucanae wikiPageWikiLink Epoch_(astronomy).
- Theta_Tucanae wikiPageWikiLink Henry_Draper_Catalogue.
- Theta_Tucanae wikiPageWikiLink Hipparcos.
- Theta_Tucanae wikiPageWikiLink Light-year.
- Theta_Tucanae wikiPageWikiLink Nicolas-Louis_de_Lacaille.
- Theta_Tucanae wikiPageWikiLink Solar_mass.
- Theta_Tucanae wikiPageWikiLink Star.
- Theta_Tucanae wikiPageWikiLink Star_catalogue.
- Theta_Tucanae wikiPageWikiLink Stellar_classification.
- Theta_Tucanae wikiPageWikiLink Subgiant.
- Theta_Tucanae wikiPageWikiLink Tucana.
- Theta_Tucanae wikiPageWikiLink Variable_star.
- Theta_Tucanae wikiPageWikiLinkText "Theta Tucanae".
- Theta_Tucanae wikiPageWikiLinkText "θ Tuc".
- Theta_Tucanae appmagV "+6.11".
- Theta_Tucanae constell Tucana.
- Theta_Tucanae dec "958.0".
- Theta_Tucanae distLy "490".
- Theta_Tucanae distPc "150".
- Theta_Tucanae epoch Epoch_(astronomy).
- Theta_Tucanae name "θ Tucanae".
- Theta_Tucanae names "HR 139, HD 3112, CP-71 20, FK5 2035, HIP 2629, SAO 255679.".
- Theta_Tucanae ra "2003.3".
- Theta_Tucanae spectral "A7IV".
- Theta_Tucanae wikiPageUsesTemplate Template:Reflist.
- Theta_Tucanae wikiPageUsesTemplate Template:Starbox_short.
- Theta_Tucanae wikiPageUsesTemplate Template:Stars_of_Tucana.
- Theta_Tucanae subject Category:A-type_subgiants.
- Theta_Tucanae subject Category:Bayer_objects.
- Theta_Tucanae subject Category:Delta_Scuti_variables.
- Theta_Tucanae subject Category:Tucana_(constellation).
- Theta_Tucanae hypernym Star.
- Theta_Tucanae type Star.
- Theta_Tucanae type Catalogue.
- Theta_Tucanae type Variable.
- Theta_Tucanae comment "Theta Tucanae (θ Tuc, θ Tucanae) is a star in the constellation Tucana.Like other stars in Tucana, it was given its Bayer designation by French explorer and astronomer Nicolas Louis de Lacaille in 1756. It was found to be variable in 1971.Theta Tucanae is a white A-type subgiant of spectral type A7IV with a mean apparent magnitude of +6.11, located approximately 423 light years from Earth.".
- Theta_Tucanae label "Theta Tucanae".
- Theta_Tucanae sameAs Q3304093.
- Theta_Tucanae sameAs تتا_توکان.
- Theta_Tucanae sameAs Theta_Tucanae.
- Theta_Tucanae sameAs m.07yz02.
- Theta_Tucanae sameAs Theta_Tucanae.
- Theta_Tucanae sameAs HD3112.
- Theta_Tucanae sameAs Q3304093.
- Theta_Tucanae sameAs 杜鵑座θ.
- Theta_Tucanae wasDerivedFrom Theta_Tucanae?oldid=660608247.
- Theta_Tucanae isPrimaryTopicOf Theta_Tucanae.