Author: iamdefinitory

MASS-LUMINOSITY RELATIONSHIP: The relationship between a star’s mass and its luminosity, which helps determine its position on the Hertzsprung-Russell diagram.

HELIUM FLASH: A sudden onset of fusion in the core of a red giant star, which causes a rapid increase in luminosity.

RED SUPERGIANTS: Very large stars that are near the end of their life, before becoming supernovae.

STELLAR EVOLUTION: The process by which a star changes over time, represented on the Hertzsprung-Russell diagram.

COOL STARS: Stars that appear red, located at the bottom right of the diagram.

HOT STARS: Stars that appear blue or white, located at the top left of the Hertzsprung-Russell diagram.

COLOR INDEX: A number that indicates the color of a star, derived from its measurements in different wavelengths.

MAIN SEQUENCE TURNOFF: The point on the Hertzsprung-Russell diagram where stars leave the main sequence, indicating their stage in evolution.

SUPERGIANTS: Extremely large stars with a high luminosity, located at the top right of the Hertzsprung-Russell diagram.