This Planet Is 1 Au Above The Convection Zone Of A Supergiant Red supergiants develop deep convection zones reaching from the surface over halfway to the core and these cause strong enrichment of nitrogen at the surface, with some enrichment of heavier elements. It almost looks like it could be a moon but i'm guessing probably not. took me a minute to figure out wtf i was looking at here. i thought the orange mountainy looking structures were the planet and the brighter yellow in the back was the star, but no, it's far more terrifying than that.
Convection Zone The Journey Continues Planet Facts We use current data from the nasa exoplanet archive to investigate planet distribution around red giant stars and their presence in the host’s habitable zone. as well, we explore the distribution of planet mass and orbital semi major axis for evolved stars with increasing stellar radii. The energy produced in the core cannot be transported by radiation only through the envelope, so convection is triggered, and a deep outer convective zone is built. The giant star expands again, possibly up to 1.5 au, equivalent to the orbit of mars. it is now an asymptotic giant branch star (agb), occupying the upper right portion of the hr diagram. The immense growth expected in the sun when it becomes a red giant will cause its radius to swell from roughly 1 au to perhaps 2 au or so. this means that mercury and venus will definitely be engulfed by the sun, and the earth and mars are likely to be engulfed as well.
Sun Convection Zone The giant star expands again, possibly up to 1.5 au, equivalent to the orbit of mars. it is now an asymptotic giant branch star (agb), occupying the upper right portion of the hr diagram. The immense growth expected in the sun when it becomes a red giant will cause its radius to swell from roughly 1 au to perhaps 2 au or so. this means that mercury and venus will definitely be engulfed by the sun, and the earth and mars are likely to be engulfed as well. Red supergiant photospheres contain a relatively small number of very large convection cells compared to stars like the sun. this causes variations in surface brightness that can lead to visible brightness variations as the star rotates. The chara image below (in angular units of milliarcseconds) shows the surface of the red supergiant az cyg that was monitored with all 6 chara telescopes for 5 years. Red supergiant photospheres contain a relatively small number of very large convection cells compared to stars like the sun. this causes variations in surface brightness that can lead to visible brightness variations as the star rotates. Did you know that betelgeuse, a red supergiant in the constellation orion, is so large that if placed at the center of our solar system, its surface would extend beyond the orbit of mars?.
Layers Of The Sun Core Radiative Zone Convection Zone Photosphere Red supergiant photospheres contain a relatively small number of very large convection cells compared to stars like the sun. this causes variations in surface brightness that can lead to visible brightness variations as the star rotates. The chara image below (in angular units of milliarcseconds) shows the surface of the red supergiant az cyg that was monitored with all 6 chara telescopes for 5 years. Red supergiant photospheres contain a relatively small number of very large convection cells compared to stars like the sun. this causes variations in surface brightness that can lead to visible brightness variations as the star rotates. Did you know that betelgeuse, a red supergiant in the constellation orion, is so large that if placed at the center of our solar system, its surface would extend beyond the orbit of mars?.
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