F-dwarfs are a type of star classified by their surface temperature and color. They have temperatures ranging from about 6,000 to 7,500 degrees Celsius, giving them a yellow-white appearance. F-dwarfs are larger and more luminous than G-dwarfs, like our Sun, but smaller and less bright than A-dwarfs. These stars typically have a lifespan of several billion years and can host planetary systems. Their stable environments make them interesting targets for the search for extraterrestrial life. F-dwarfs are often studied in the field of astrophysics to understand stellar evolution and the formation of planets.