Английская Википедия:HD 76270

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Шаблон:Short description Шаблон:Starbox begin Шаблон:Starbox observe Шаблон:Starbox character Шаблон:Starbox astrometry Шаблон:Starbox detail Шаблон:Starbox catalog Шаблон:Starbox reference Шаблон:Starbox end

HD 76270, also known as HR 3544, is a solitary, white hued star located in the southern circumpolar constellation Volans. It has an apparent magnitude of 6.10,[1] making it faintly visible to the naked eye if viewed under ideal conditions. The object is relatively far with a distance of 2,360 light years,[2] but is slowly approaching the Solar System with a heliocentric radial velocity of Шаблон:Val.[3]

HD 76270 was considered as a chemically peculiar Am star, and as a result, was given a spectral classification of A3mA6-7[4] by Nancy Houk and A.P Cowley. This means it is an A3 star with the metallic lines of a star with a class of A6-7. However, this peculiarity is now considered doubtful.[5] An alternate class of A5 III/IV[4] was given, instead making it an evolved A-type star with a blended luminosity class of a subgiant and a giant star.

At present it has 5.3 times the mass of the Sun[6] but has expanded to 22.9 times its girth.[7] It shines with a high luminosity of Шаблон:Solar luminosity[8] from its enlarged photosphere at an effective temperature of Шаблон:Val.[7] HR 3544 is metal deficient, having an iron abundance 64% below solar levels.[9] A 1984 study used HD 76270 as a comparison star and suspected it of being slightly variable,[10] but this has not been confirmed and it is not even listed as a suspected variable in the General Catalogue of Variable Stars.[11]

References

Шаблон:Reflist Шаблон:Volans

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