B9V

B9V is a spectral class used in stellar classification to describe the physical characteristics of stars. The "B" indicates that the star is a main sequence star with a surface temperature between 10,000 K and 30,000 K. The "9" further refines this range, specifically to temperatures between 10,000 K and 11,000 K. The "V" denotes that the star is a main sequence star, meaning it is in the stable hydrogen-burning phase of its life. B9V stars are typically blue-white in color and have a mass ranging from about 3 to 4 times that of the Sun. They are relatively rare compared to other main sequence stars, but they are still significant in the study of stellar evolution and the structure of the universe. B9V stars are often found in binary systems and are known to have strong stellar winds, which contribute to their relatively short lifespans compared to less massive stars.