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Mysterious blue lurker stars likely got a spin boost by absorbing their partners

The open cluster M67 hosts a number of so-called blue stragglers, stars that spin far faster than expected. New research suggests the stars got a spin boost by absorbing gas from a dying partner star. Sloan Digital Sky Survey.
United States Robert Mathieu University Of Wisconsin Sloan Digital Sky National Science Foundation American Astronomical Society

Binary star with heartbeat but no pulsation spotted

A group of Indian and international scientists have spotted a peculiar binary star that shows heartbeat but no pulsations, contrary to the norm of binary stars sporting both heartbeats as well as pulsations. This star is called HD73619 in Praesepe (M44), located in the Cancer constellation, one of the closest open star clusters to the Earth.
United Kingdom New Delhi South African Astronomical Observatory Northern Cape South Africa Cape Town

A Blinking and Dimming Star May Be Caused by a Mysterious Dusty Object

The worldโ€™s most famous dimming star is KIC 8462852, better known as โ€œTabbyโ€™s Starโ€ for Tabetha S. Boyajian, the astronomer whose scientific paper in 2015 revealed its peculiar propensity for dimming and glowing at irregular intervals. Speculation on causes for the dimmings ranged from dust rings to planetary debris to a second smaller binary star... Read more ยป
Tabethas Boyajian Karen Collins Harvard College Observatory Exoplanet Survey Satellite Transiting Exoplanet Survey Satellite Smithsonian Astrophysical Observatory

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