stellar vampires” may feed on hidden stars in their systems. The hidden third star could act as a cosmic accomplice, pushing feasted-upon stars closer to vampire stars.
Here’s some more information about “stellar vampires”:
- Hidden third star Some star systems believed to host two stellar bodies may actually have a hidden third star.
- Vampire stars These stars may form as they suck the life out of another star in their systems.
- Be systems These systems may have a hidden third star that could play a role in pushing feasted-upon stars closer to vampire stars.
Some star systems believed to host two stellar bodies may actually have a hidden third — a traitorous star that could help push one of its sparkling companions toward the other, as the latter feasts on its victim like a vampire.
Yes, some stars are vampires. In binary star systems, a smaller star can suck the outer layers of its companion star due to gravitational pull. This phenomenon is sometimes called “stellar vampirism”. The smaller star, called the vampire star, becomes hotter and bluer. The companion star becomes a small stellar remnant.
Astronomers have observed vampire stars many times. For example, astronomers have found a binary star where a small dead star slowly strips its companion of gas. This type of interaction is known as a cataclysmic variable star, but is more commonly called a vampire star.
Vampire stars are also known as blue stragglers. Astronomers first discovered these stars in the Milky Way galaxy. They are oddball stars that seem to lag in age behind the ancient neighbors with which they formed.
Vampire stars are also known as “Be” stars. They are a subcategory of B stars, which are very bright and between 2 and 16 times more massive than the sun
Vampire stars are characterized by rings of superheated gas. They attract smaller stars and devour their atmospheres. They rip through the stars with their rapid spinning motion, draining the star and sucking it in.
Some examples of vampire stars include:
- Achernar: A Be star that is the ninth brightest star in the night sky. It is more than 3,100 times brighter than the sun.
- White dwarf star: A compact stellar corpse that is a vampire star.
- Brown dwarf star: A cooler star that orbits a white dwarf star every 83 minutes.
The leading theory for the cause of vampire stars is that the stars’ rapid rotation creates Be disks. These disks rip material away from the companion stars. The material stripped from the victim star also carries angular momentum, which spins up the rotation of the vampire star.
Other possible causes include:
- Binary systems: One star may suck the atmosphere of the other star.
- Triple-star systems: Gravitational interactions may cause two stars to merge into one.
- Collapse: A massive star may collapse at the end of its life to form a pulsar.
A Type Ia supernova can result in a vampire star. Type Ia supernovae occur in binary star systems where one star is a white dwarf. The white dwarf star is destroyed in the explosion, which produces radioactive elements like nickel-56.
Type Ia supernovae are thought to arise when a white dwarf star in a binary system exceeds its Chandrasekhar limit. This happens when the companion star transfers a lot of material onto the white dwarf. Another theory is that a Type Ia supernova occurs when two white dwarf stars in a binary system merge.
Astronomers use Type Ia supernovae to measure distance in the universe because they always explode with the same amount of energy
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