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The star Spica-A
For the star Spica-A, which is the larger star of a dual star system and is 7.4 times as big as the Sun, the measured surface temperature is a whopping 22,400 degrees.
A principle appears to be reflected in this progression between the size of stars and their correspondingly higher surface temperature. The progression in temperature seems to indicate that larger stars are able to attract larger volumes of interstellar plasma, which electromagnetic fields focus around them, that the stars consume in surface plasma fusion. The focused plasma becomes more concentrated around the larger stars, by the larger star having a greater electric and gravitational potential, which all play a role in the plasma-fusion dynamics.
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