What is a GV star?
Q: What is a GV star?
A: A GV star, or yellow dwarf, is a main-sequence star of spectral type G and luminosity class V on the Hertzsprung-Russell Diagram.
Q: What color are GV stars?
A: GV stars range in color from white for more luminous types like the Sun to very slightly yellow for less massive and luminous types.
Q: How much mass do GV stars have?
A: GV stars typically have masses between 0.8 and 1.0 solar masses.
Q: What is an example of a well-known GV star?
A: The Sun is the most commonly known (and easily seen) example of a GV star.
Q: How long can a GV star fuse hydrogen nuclei together and release energy?
A: A typical GV star can fuse hydrogen nuclei together and release energy for around 10 billion years.
Q: What happens when the hydrogen in a GV star runs out?
A: When the hydrogen runs out, the star will grow to many times its earlier size and become a red giant, eventually losing its outer layers of gas which will form into a planetary nebula while its core cools and shrinks into a small, very dense white dwarf.
