News < LIVING fUTURE

X-ray variability of star HD 189733 is different from variability in its optical spectrum

Star HD 189733 is flaring in half of its observations. Astronomers also found out that the variability is significantly different in different parts of the electromagnetic spectrum.

MissionTimingStatus
missions icon XMM-Newton 10. 12. 1999 Ongoing

Yellow star



The star has about 83 % of solar mass. In its system there is also another smaller star and a jupiter-sized exoplanet. The presence of the exoplanet might be the cause of difference in variability.

Related stars in catalogue

Star Star type Distance
(light years)
Exoplanets
part of star image
part of star image
HD 189733 A Orange star 64.5
1
part of star image
part of star image
HD 189733 B Red dwarf 64.5
Did you like this content?

Support us by sharing

More news from category
Stars