What Is a Yellow Dwarf?
The yellow dwarf, the star name, is a kind of main sequence star, its mass is 1.0 to 1.4 times that of the sun, and its spectral classification is mostly G type.
Yellow dwarf
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- Chinese name
- Yellow dwarf
- Foreign name
- yellow dwarf
- Classification
- Main sequence star
- Quality
- 1.0 to 1.4 times the sun
- surface temperature
- 5400 6000
- Spectral classification
- G type
- Longevity
- About 10 billion years
- The yellow dwarf, the star name, is a kind of main sequence star, its mass is 1.0 to 1.4 times that of the sun, and its spectral classification is mostly G type.
- Our sun can be called a yellow dwarf. The main sequence life of each yellow dwarf is about 10 billion years. During this time, yellow dwarfs will fuse hydrogen into helium through internal nuclear fusion. When their hydrogen is almost depleted, they will leave the main sequence. , Itself began to expand, and will expand to multiples of its original volume, become a red giant, and begin to burn helium.
- Bi Suwu, located in Taurus, is a red giant. When the red giant can no longer burn helium, it will eject outer gas, which becomes a planetary nebula, and the core collapses into a high-density white dwarf. And "if the mass of a white dwarf reaches 1.4 times the mass of the sun, it will become a celestial body with a radius of 0 (that is, a black hole) (Chandrasekhar)". In fact, if the mass of a white dwarf reaches 1.4 times the mass of the sun, it will collapse into a neutron star, and if it exceeds 3.2 times, it will become a black hole.
- Yellow dwarfs have a surface temperature of between 5400 and 6000 degrees Celsius, and will accumulate tens of billions of tons of hydrogen into helium per second, with hundreds of millions of tons of mass converted into energy.