📰 The origin of the Betelgeuse stellar wind is revealed through the first 3D images

Apart from the lightest elements (H, He, and Li), atoms inside stars are formed by nuclear reactions throughout their lives. But they have to flee. Among the most effective escape mechanisms are the wind (Wind is the movement of an atmosphere, mass of gas on the surface…) terrific (Stellaria is a genus of herbaceous annual or perennial plants, the chickweed, the…) and particularly that of the red supergiants. At the end life (Life is the given name 🙂these stars emit an intense and almost continuous stream ofatoms (An atom (from the Greek ατομος, atomos, “that one cannot…) of all kinds. But what is the origin of this stellar wind?


3D images of the photosphere from Betelgeuse (The term Betelgeuse refers to:) on December 20, 2013.

At the top of the Pic du Midi, the telescope (A telescope, (from the Greek tele means “far” and skopein means…) Bernard Lyot (TBL) studies Betelgeuse, the red supergiant (Red supergiants are relatively massive stars in the process of increasing their…) closest to the Earth (Earth is the third planet in the solar system in order of distance…). A new technique was recently developed bypictures (Images are primarily the manufacture and trade of physical images that…) indirectly, which is based on theuse (Use is the act of using something.) of polarization (the polarization of electromagnetic waves; the polarization due to moments…) of bright (Light is the amount of electromagnetic waves visible to the eye…) issued, was occurred (In geometry, the evolute of a plane curve is the locus of its centers from…). If in a first time (Time is a concept developed by humans to represent the…)where only two-dimensional images were obtained, the technology has improved and now delivers three-dimensional images. So we see them plasma (In physics, plasma describes a state of matter made up of charged particles…) heated insidestar (A star is an autonomously luminous celestial object, similar to a…) go up to Pop up (A surface generally refers to the superficial layer of an object. The term a…) where it cools. Heavier because more cold (Cold is the opposite of heat, associated with low temperatures.)it should then fall back into the interior of the star, where it would be reheated in a convective cycle.

But what we see in the 3D images of Betelgeuse is slightly different. The plasma does not always fall, but continues to rise speed (We distinguish 🙂 almost constant. A Strength (The word force can denote a mechanical power over things, and also, metaphorically, a…) not yet identified grow (Pousse is the name of an illegal car race on Réunion.) this plasma and allows it to escape from the star. This force is the reason for the powerful stellar wind of Betelgeuse. It is the raison d’être of this stardust that a Day (The day or day is the interval separating sunrise from sunset; it is that…)will form planets and maybe life around (Autour is the name given by the bird nomenclature in French (update)…) from another star.

This work is the result of six years of polarimetric measurements of Betelgeuse with the instruments narwhal (The narwhal (Monodon monoceros), also called the unicorn of the sea, is a whale. The…) and Neo-Narval built by the OMP and installed on the Bernard Lyot telescope at the Pic du Midi. That Comments (Observation is the act of attentively following phenomena without the will to see them…) and analyzes of Data (In information technology (IT), data is an elementary description, often…) were carried out by a research team from the OMP – IRAP and theUniversity of Montpellier (The University of Montpellier was an educational institution…).

Learn more:
Three-dimensional imaging of convective cells in the Betelgeuse photosphere? – Astronomy and astrophysics.
A López Ariste, S Georgiev, Ph Mathias, A Lèbre, M Wavasseur, E Josselin, R Konstantinova-Antova, and Th Roudier.
https://doi.org/10.1051/0004-6361/202142271

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