Blue Dwarf . A blue dwarf is a hypothetical kind of star that forms when a red dwarf uses up most of its hydrogen. Because red dwarfs fuse their hydrogen very slowly and are highly convective, the life span of the universe is not high enough to still house one of these blue dwarfs. Its existence is predicted from theoretical models.
Summary
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- 1 Evolution of the stars
- 2 Evolution of the Blue Dwarf
- 3 Process
- 4 Sources
Evolution of the stars
- The star is formed from a cloud of gas and dust.
- Nuclear reactions. Masses of gas and dust condense around them (protoplanets).
- Main sequence. The star with planets, stable while consuming their matter.
- The star begins to expand and cool.
- It grows, engulfing the planets, until it becomes a red giant.
- It becomes unstable and begins to alternately expand and shrink until it explodes.
Evolution of the Blue Dwarf
Our Sun , for example, with its 697,000 km. of radius, it is considered a dwarf star. Antares, a star in the constellation Scorpio, which has a diameter equivalent to 285 times that of the Sun (it is so large that if it is put in place it would occupy space up to the orbit of Tuesday ), is a supergiant. The stars like the sun , in the early stages of its evolution, while they are still “cold” and not have enough energy to emit, are called red dwarfs ; while stars like our Sun , which explode at the end of their existence and then contract, emitting large amounts of energy, are called white dwarfs.
Process
The blue dwarfs to reach their current state go through a process due to the fact that as time passes they increase their luminosity , and a more luminous star needs to radiate energy more quickly to stay in balance. Stars larger than ojas dwarfs solve this problem by increasing their size and becoming red giants, increasing their surface area. However, instead of expanding, red dwarfs increase their radioactivity, thereby increasing their surface temperature and turning bluish. This is because the layers on the surface of red dwarfs do not become more opaque as the temperature increases. Blue dwarfs, once their hydrogen is completely depleted, they could end up as white dwarfs.