A G-type main-sequence star (spectral type: G-V), also often, and imprecisely, called a yellow dwarf, or G star, is a main-sequence star (luminosity class V) of spectral type G. Such a star has about 0.9 to 1.1 solar masses and an effective temperature between about 5,300 and 6,000 K (5,000 and 5,700 °C ; 9,100 and 10,000 °F ).

There are seven main types of stars. In order of decreasing temperature, O, B, A, F, G, K, and M. O and B are uncommon, very hot and bright. M stars are more common, cooler, and dim. The video below presents a helpful overview of the types of stars in the Universe.

The Sun is a class G star; these are yellow, with surface temperatures of 5,000–6,000 K. Class K stars are yellow to orange, at about 3,500–5,000 K, and M stars are red, at about 3,000 K, with titanium oxide prominent in their spectra.

A GV star, or yellow dwarf, is a main-sequence star. It is of spectral type G and luminosity class V on the Hertzsprung-Russell Diagram . The term yellow dwarf is a misnomer , because G-type stars actually range in color from white, for more luminous types like the Sun , to only very slightly yellow for the less massive and luminous G-type main ...

G-type stars, including the Sun, [14] have prominent spectral lines H and K of Ca II, which are most pronounced at G2. They have even weaker hydrogen lines than F, but along with the ionized metals, they have neutral metals.

2018年11月20日 · It's uncannily similar to the Sun. It's a G-type main-sequence star just a teeny tiny smidge bigger than the Sun, and around about the same surface temperature and luminosity. It also has extremely similar chemical abundances, and is around the same age - …

2022年9月26日 · Our Sun is a main sequence star, a G-type yellow dwarf that has an estimated total lifetime of around 10 billion years before it leaves its main sequence phase. (Image credit: NASA)

A yellow dwarf is a star and is often referred to as a G-type main sequence star. A perfect example of a yellow dwarf would be the sun. A yellow dwarf has a mass almost like the mass of the sun. Its color ranges from white to a lighter yellow.

G-type stars, including the Sun, have prominent spectral lines H and K of Ca II, which are most pronounced at G2. They have even weaker hydrogen lines than F, but along with the ionized metals, they have neutral metals.

A G-type main-sequence star (Spectral type: G-V), often (and imprecisely) called a yellow dwarf, or G dwarf star, is a main-sequence star (luminosity class V) of spectral type G. Such a star has about 0.84 to 1.15 solar masses and surface temperature of between 5,300 and 6,000 K. [2], Tables VII, VIII.