Astronomers Discover Exceptionally Massive Hot Subdwarf Binary System LAMOST J0658 New Observations Reveal One of the Most Extreme Stellar Pairs Known Researchers have uncovered a new binary star system known as LAMOST J065816.72+094343.1 , consisting of a massive, high-temperature subdwarf and a companion that has yet to be directly observed. The discovery is reported in the January issue of Astronomy & Astrophysics . More space and astronomy discoveries What Do We Know About J0658? LAMOST J0658 16.72+094343.1 — commonly known as J0658 — was first detected in 2018 by the Large Sky Area Multi-Object Fiber Spectroscopic Telescope (LAMOST) and classified as a hot sdOB-type subdwarf . Early observations revealed it to be helium-deficient , with an effective temperature of around 35,000K an a projected rotational velocity of 37km/s . With much still unknown about J0658, a research team led by Fabian Mattig from the University of Potsdam , Germany, undertook a detailed analysis of...
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