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WR 102, of spectral classification WO2, is one of the very few known oxygen-sequence Wolf–Rayet stars, just four in the Milky Way galaxy and nine in external galaxies. It is also one of the hottest known, with a surface temperature estimated to be at 210,000 K .
Temperature Mass (M ☉) Luminosity (L ☉) Spectral type Distance (light-years) Ref. WR 102: 200,000 16.1 380,000 WO2: 8,610 [1] [2] [3] WR 142: 200,000 28.6 912,000 ...
WR 102c is surrounded by a shell of nebulosity which contains dust made even hotter than the star itself by intense radiation. The nebula also includes nearly 1 M ☉ of molecular hydrogen and around 10 M ☉ of ionised hydrogen, all expelled from the star. [4] There is a suggestion that WR 102c may be a binary star.
WR 136, a WN6 star where the atmosphere shed during the red supergiant phase has been shocked by the hot, fast WR winds to form a visible bubble nebula. In 1867, using the 40 cm Foucault telescope at the Paris Observatory, astronomers Charles Wolf and Georges Rayet [1] discovered three stars in the constellation Cygnus (HD 191765, HD 192103 and HD 192641, now designated as WR 134, WR 135, and ...
WR 102ea is a Wolf–Rayet star in the Sagittarius constellation. It is the third most luminous star in the Quintuplet cluster after WR 102hb . With a luminosity of 2,500,000 times solar , it is also one of the most luminous stars known.
geo: average total heat flow at Earth's surface which originates from its interior. [45] Main sources are roughly equal amounts of radioactive decay and residual heat from Earth's formation. [46] 8.8 × 10 13: astro: luminosity per square meter of the hottest normal star known, WR 102: 5–20 × 10 13
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BAT99-123, also known as Brey 93, is a rare WO-type (oxygen sequence) Wolf–Rayet star located in the Large Magellanic Cloud, about 160,000 light years away in Dorado. BAT99-123 was the first WO star discovered in the LMC, and only 3 are known to exist in the galaxy, the other two being LH 41-1042 and LMC195-1 .