What type of star is CoRoT-2A?

CoRoT-2A is classified as a yellow dwarf star, which is a type of star that occupies the main sequence on the Hertzsprung-Russell diagram. Yellow dwarfs, like our Sun, have surface temperatures that allow them to emit a significant amount of light in the visible spectrum, leading to their characteristic yellow-white appearance when viewed from a distance.

CoRoT-2A's classification as a yellow dwarf indicates that it has a mass and size comparable to that of the Sun, and it fuses hydrogen into helium in its core, which helps sustain its luminosity and temperature. This classification is essential in understanding the properties of star systems, particularly in exoplanet studies since yellow dwarfs are often the type of stars that can host stable planetary systems capable of supporting life.

Understanding the context of other star types—giants being larger and more luminous than main-sequence stars, red dwarfs being smaller and cooler, and supergiants being extremely massive and bright—highlights why CoRoT-2A is distinctly categorized as a yellow dwarf based on its specific characteristics.