Life as we know it developed on a planet orbiting a G2 V star, the Sun. The cryptic “G2 V” designation is the Sun’s “spectral type.” Based on a star’s spectrum, astronomers group stars by temperature.

They are between two and ten times more massive than the sun and have spectral types A, B, and in a few cases F. T Coronae Australis (or T CrA for short) is a Herbig Ae-type star of spectral type ...

113, No. 780, February 2001 A Large Spectral Class Dependence of the... A Large Spectral Class Dependence of the Wilson‐Bappu Effect among Luminous Stars This is the metadata section. Skip to content ...