In astronomy, the main sequence is a classification of stars which appear on plots of stellar color versus brightness as a continuous and distinctive...

A G-type main-sequence star (yellow dwarf or G dwarf) is a main-sequence star of spectral type G. The spectral luminosity class is typically V. Such a...

A red dwarf is the smallest kind of star on the main sequence. Red dwarfs are by far the most common type of fusing star in the Milky Way, at least in...

cores. Such stars are said to be on the main sequence and are called dwarf stars. Starting at zero-age main sequence, the proportion of helium in a star's...

A K-type main-sequence star (K-type dwarf or orange dwarf) is a main-sequence (hydrogen-burning) star of spectral type K. The luminosity class is typically...

supergiant Hypergiants absolute magni- tude (MV) A B-type main-sequence star is a main-sequence (hydrogen-burning) star of spectral type B. The spectral...

Blue main-sequence star may refer to: O-type main-sequence star, main sequence stars ranging above 30,000 K B-type main-sequence star, main sequence stars...

An F-type main-sequence star is a main-sequence, hydrogen-fusing star of spectral type F. Such stars will generally have a luminosity class of V. They...

Hertzsprung–Russell diagram where it leaves the main sequence after its main fuel is exhausted – the main sequence turnoff. By plotting the turnoff points of...

supergiant Hypergiants absolute magni- tude (MV) An O-type main-sequence star is a main-sequence—core hydrogen-burning—star of spectral type O. The spectral...

White main-sequence star may refer to: A-type main-sequence star, main sequence stars ranging from 7,600 to 10,000 K F-type main-sequence star, main sequence...

An A-type main-sequence star (A dwarf) is a main-sequence (hydrogen burning) star of spectral type A. The spectral luminosity class is typically V. These...

belonging to K-type stars. Yellow dwarfs comprise the G-type stars of the main sequence, with masses between 0.9 and 1.1 M☉ and surface temperatures between...

A pre-main-sequence star (also known as a PMS star and PMS object) is a star in the stage when it has not yet reached the main sequence. Earlier in its...

class III for regular giants, class IV for subgiants, class V for main-sequence stars, class sd (or VI) for subdwarfs, and class D (or VII) for white...

diagram along the line called the main sequence. During the stage of their lives in which stars are found on the main sequence line, they are fusing hydrogen...

energy from its outer photosphere. Astronomers classify it as a G-type main-sequence star. The largest objects that orbit the Sun are the eight planets....

F-type main-sequence stars are thought to be the hottest and more massive stars capable of hosting a planet with extraterrestrial life. Compared to cooler...

stars in the Milky Way.: §1  After the hydrogen-fusing period of a main-sequence star of low or intermediate mass ends, such a star will expand to a...

elements, including oxygen, carbon, neon, and iron. The Sun is a G-type main-sequence star (G2V), informally called a yellow dwarf, though its light is actually...

amplitude ranges, the main sequence can best be modeled by an inverse power law function. The high peak velocities and the main sequence relationship can also...

early A-type main-sequence star. KOI-81b is a 13,000 K white dwarf companion of KOI-81 (KIC 8823868), a 10,000 K late B-type main-sequence star. While...

spectra. Pure helium stars lie on or near a helium main sequence, analogous to the main sequence formed by the more common hydrogen stars. Previously...

settle down into a state of equilibrium, becoming what is known as a main sequence star. Nuclear fusion powers a star for most of its existence. Initially...

they lie on the Zero Age Helium Main Sequence (He-ZAMS), analogous to and parallel to the hydrogen-burning main sequence but at hotter temperatures. During...

as the main sequence. Main-sequence stars derive energy from the fusion of hydrogen into helium in their cores. The Sun remains a main-sequence star today...

infalling gas is depleted, leaving a pre-main-sequence star, which contracts to later become a main-sequence star at the onset of hydrogen fusion producing...

K-type main-sequence stars, also known as orange dwarfs, may be candidates for supporting extraterrestrial life. These stars are known as "Goldilocks...

solar granulation. Low-mass main-sequence stars, such as red dwarfs below 0.35 solar masses, as well as pre-main sequence stars on the Hayashi track,...

type O B A F G K M L T Brown dwarfs White dwarfs Red dwarfs Subdwarfs Main sequence ("dwarfs") Subgiants Giants Red giants Blue giants Bright giants Supergiants...