Yellow-white dwarf
Encyclopedia
An F-type main-sequence star (F V) is a main-sequence
, hydrogen
-fusing star
of spectral type F and luminosity class V. These stars have from 1.0 to 1.4 times the mass
of the Sun
and surface temperature
s between 6,000 and 7,600 K
., Tables VII and VIII. This temperature range gives the F-type stars a yellow-white hue. Because a main sequence star is referred to as a dwarf star, this class of star may also be termed a yellow-white dwarf. Examples include Procyon A and Gamma Virginis
A and B.
Main sequence
The main sequence is a continuous and distinctive band of stars that appears on plots of stellar color versus brightness. These color-magnitude plots are known as Hertzsprung–Russell diagrams after their co-developers, Ejnar Hertzsprung and Henry Norris Russell...
, hydrogen
Hydrogen
Hydrogen is the chemical element with atomic number 1. It is represented by the symbol H. With an average atomic weight of , hydrogen is the lightest and most abundant chemical element, constituting roughly 75% of the Universe's chemical elemental mass. Stars in the main sequence are mainly...
-fusing star
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...
of spectral type F and luminosity class V. These stars have from 1.0 to 1.4 times the mass
Solar mass
The solar mass , , is a standard unit of mass in astronomy, used to indicate the masses of other stars and galaxies...
of the Sun
Sun
The Sun is the star at the center of the Solar System. It is almost perfectly spherical and consists of hot plasma interwoven with magnetic fields...
and surface temperature
Effective temperature
The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation...
s between 6,000 and 7,600 K
Kelvin
The kelvin is a unit of measurement for temperature. It is one of the seven base units in the International System of Units and is assigned the unit symbol K. The Kelvin scale is an absolute, thermodynamic temperature scale using as its null point absolute zero, the temperature at which all...
., Tables VII and VIII. This temperature range gives the F-type stars a yellow-white hue. Because a main sequence star is referred to as a dwarf star, this class of star may also be termed a yellow-white dwarf. Examples include Procyon A and Gamma Virginis
Gamma Virginis
Gamma Virginis is a star in the constellation Virgo. It has the traditional names Porrima, Postvarta and Arich....
A and B.