JD 2441901, previously a red dwarf (at left) has been boosted by polar reflectors to K-class temperatures (at right)
A solar output enhancement array. It consists of solar sails placed in balanced positions above the northern and southern hemispheres of a star. The array reflects the output of the star back onto its surface, thereby heating the outer layers and causing the star's spectrum to shift upward. The result for planets and habitats orbiting in the plane of the ecliptic is that the star appears to change from its original classification (typically M or K) to a more Sol-like spectrum (G-class).
Stellar Engineering - Text by M. Alan Kazlev Modifying or customizing a star in any manner. Could be for the purposes of stellar husbandry, or for more exotic purposes.
Stellar Husbandry - Text by Dave Criswell, in Anders Sandberg's Transhuman Terminology A type of stellar engineering which involves controlling the evolution and properties of stars, especially to stabilize them, prolong their lifetimes, manipulate the stellar wind, lift off useful material or create new stars. Typical methods include star lifting or mixing the stellar core with envelope material to make hydrogen burning last longer.