Английская Википедия:HL Tau 76

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HL Tau 76 is a variable white dwarf star of the DAV (or ZZ Ceti) type. It was observed by G. Haro and W. J. Luyten in 1961,[1][2] and was the first variable white dwarf discovered when, in 1968, Arlo U. Landolt found that it varied in brightness with a period of approximately 749.5 seconds, or 12.5 minutes.[2] Like other DAV white dwarfs, its variability arises from non-radial gravity wave pulsations within itself.[3], § 7. Later observation and analysis has found HL Tau 76 to pulsate in over 40 independent vibrational modes, with periods between 380 seconds and 1390 seconds.[4]

The designation HL Tau 76 derives from the discovery of this star as a white dwarf, when it was described as Taurus no.76 in a publication authored by Guillermo Haro and Willem Jacob Luyten.[1] The exact designation HL Tau 76 was then used in subsequent papers, including one giving the star its designation EGGR 265 where it was noted to be variable.[5] It was then included in the 57th name-list of variable stars and given the variable star designation V441 Tauri.[6] The unusual designation HL Tau 76 continues to be used by most authors.[7]

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Шаблон:Stars of Taurus