Despite being twins, M dwarf stars in wide binaries show surprising differences in magnetic activity

8. 10. 2024

Despite being twins, M dwarf stars in wide binaries show surprising differences in magnetic activity

Star system: G 124-43 | Distance from the Sun: 57.2 light years

For instance, in Gliese 1183, star A has stronger X-ray and Hα emissions than B, despite similar rotation speeds.

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Scientific study

The Solar Neighborhood LII: M Dwarf Twin Binaries -- Presumed Identical Twins Appear Fraternal in Variability, Rotation, Hα, and X-rays external link

Stars mentioned

G 124-43

M4.65, Red dwarf

radius: 0.3 R☉

distance: 57.2 ly

stars in the system: 2

exoplanets: 0

LP 920-61 A

M3.5e, Red dwarf

mass: 0.25 M☉

radius: 0.3 R☉

distance: 59.7 ly

stars in the system: 2

exoplanets: 0

KX Comae Berenices

M2.5, Red dwarf

radius: 0.3 R☉

distance: 89.1 ly

stars in the system: 2

exoplanets: 0

2MASS J0201+0117 A

Red dwarf

mass: 0.54 M☉

radius: 0.3 R☉

distance: 161 ly

stars in the system: 2

exoplanets: 0

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