In addition,
Small companion bételgese star:
The Bételgeuse star. Similarly, one of the brightest in the galaxy and whose mysterious plague had raised an imminent end, has a companion star whose hypothesis of existence has only been issued recently.
A friend for Betelgeuse
titled in December a study published in The Astrophysical Journal (new window) (in English)predicting that a young star close to the red super giant would explain a regular variation. Moreover, in its brightness. In addition,
The constellation of Orion
Photo: Discovering the universe)
Bételgeuse. Moreover, clearly visible to the naked eye in the Orion constellation, is customary of such surprises for those who observe it. Meanwhile,
She had pale spectacularly five months for between 2019 and 2020, suggesting an imminent end. Before observations concluded that the star was ejected by the star. a cooling of its surface to explain the phenomenon.
Unexplained light curves – Small companion bételgese star
It remained to explain the origin of its two curves of light. the slow pulses of its apparent light, which are approximately 400 days respectively for one and almost 6 years for the other.
The head of the longest light curve is a small star. according to small companion bételgese star a study (Probable Direct Imaging Discovery of the Stellar Companion to Betelgeuse) which will be published Thursday in The Astrophysical Journal Letters.
From a mass estimated only once. a half time that of our sun, tiny compared to that of Bételgeuse, – which is almost a thousand times more than our star -, the star orbit his partner at a relatively low distance, of the order of four times that separating the earth from the sun.
With its strong light, Bételgeuse is a star observed for thousands of years.
Photo: AFP / Paris Observatory
It is the first detection of an orbit star as close to a super giant star. according to the Noirlab press release, the American organization operating in particular the Gemini observatory, which allowed these observations.
The detection of the small star. which its low light compared to that of Bételgeuse makes it particularly difficult, was made possible with a so -called tavling interferometry technique. Which consists in assembling fixed. very brief images of a star to get rid of atmospheric turbulence which disturb the observation by terrestrial telescopes.
Benchmarks
- Bételgeuse is around 650 light years from the earth.
- It has a mass about 20 times that of the sun.
- Bételgeuse is part of the family of small companion bételgese star red supergeting stars.
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