![]() ![]() ![]() It is the brightest star in Auriga and the sixth brightest star in the sky. Mamajek, E., A Modern Mean Dwarf Stellar Color and Effective Temperature Sequence. Capella, Alpha Aurigae ( Aur), is a quadruple star system located in the constellation Auriga, the Charioteer.E., et al The Hα Profiles of Be Shell Stars. The temperature of each spectral class is then further subdivided from hot to cool by the simple addition of a number, where 0 is the hottest and 9 the coolest. Brown dwarfs are NOT considered stars at all in that they never have. Peak wavelength of black body of same temperature (nm) Using the letters O, B, A, F, G, K, and M, the 7 main types of stars are easily classified from hottest (O) to coolest (M). The spectral types run O, B, F, G, K, M with the extension for brown dwarfs L, T. ![]() Properties of B-type main sequence stars Spectral type O-type stars on the main sequence have the highest masses (greater than about. Each spectral type is subdivided into 10 intervals, e.g. While they also possess short lifespans, making planets and life rare, there are a few examples of B-type star systems, including HIP 78530. O-type stars are the hottest and bluest of the main spectral classifications. The O-type stars are the hottest stars and the M-type stars are the coolest. (a) Type O main sequence star (b) Type A main sequence star (c) Type G main sequence star. This means it is burning its hydrogen fuel and generating heat at just the right rate to. The habitable zone of a typical Class B star is on the order of 50 AU. A main sequence star is one which is in hydrostatic equilibrium. They are fairly rare, making up only 0.13% of main-sequence stars.Ī typical Class B star has a mass of 9 (2 to 16) solar masses, a radius of 4 (2 to 7) solar radii, a luminosity of 1,000 (25 to 30,000) solar luminosities, a surface temperature of 20,000 K (10,000 K to 30,000 K), and a lifespan of 40 million years. They are hotter than G-Type stars which the Sun is classed as one. They are typically colored blue-white, slightly less blue than O-type stars. They are Main Sequence stars, fusing hydrogen to helium. A Class B star is the second-brightest type of main sequence star. ![]()
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