The term object as a structure is common in astronomy, especially when they are new things or things that have yet to be defined, but scientists have detected it as a star that travels very fast (J1249+36), it is 400 light years away and at At the speed at which it is going, it will end up leaving the galaxy.
If they came towards us it would take more than 200,000 years to arrive and the mystery that surrounds this star is what launched this star at such enormous speed, so that we have a reference, our beloved sun travels at about 792,000 km per hour , with respect to the center of the galaxy that it ends up orbiting in about 225 to 250 million years, is a normal speed for a star, it would be like the sun would be like a car on the Galactic Highway.
The hyper-fast stars go much faster than the Galactic sports cars and in recent years several hyper-fast stars have been discovered, in fact some much faster than this one, especially those that are orbiting the supermassive black hole at the center of our galaxy. So they go fast, these Stars that are not tied to a black hole are going to end up leaving our galaxy due to their speed.
There are other hyper-fast stars coming towards our galaxy from the neighboring Andromeda galaxy, they are the advance guard of the crash invasion, if it occurs, but the question is what happens with 1249+36 that makes it so special, what The first to have been discovered thanks to the collaboration of 80,000 volunteers from the Backyard Worlds: Planet 9 project, this shows that there are tens of thousands of astronomy fans.
There are hundreds of thousands of astronomy fans with telescopes, with equipment and collaborating on projects like this, the project as such aims to discover the hypothetical planet 9, but through study, analyzing a lot of objects, a lot of data has been obtained. found interesting things like this star.
It is also interesting because it is located 400 light years away, it is the closest hyper-fast star to us which is an advantage to be able to study it in detail, the good thing is that being so close, we can study it better.
The star J1249+36 is a sub L dwarf, it is unusual, they are a class of stars with very low mass and temperature, on the limit to be a star; The sub dwarfs represent the oldest stars in the Milky Way, some not all but among the oldest are this type of stars.
Stars of this type do not travel that fast naturally, they have had to receive “a kick of momentum”; The researchers focused on two possibilities, first possibility J1249+36 was the low-mass companion of a white dwarf, white dwarfs are the corpse of a star like the sun, they are the cores of stars of less than 10 solar masses that have exhausted their nuclear fuel and have become extinct.
When a star is in an orbit very close to a white dwarf, it runs the risk of the white dwarf stealing its mass, which means that suddenly the white dwarf that should be dead begins to have fuel to carry out fusion reactions. , but it does not do them normally, but rather gives rise to periodic explosions called novae. If the White Dwarf accumulates too much mass, it can even collapse and explode like a supernova.
In the supernova, the White dwarf can be completely destroyed, so its companion breaks free and flies away at the orbital speed at which it was traveling, in addition to receiving an extra push due to the energy of the supernova explosion.
The other option is that the star was trapped in a binary system of black holes and that it was a victim of the three-body problem, being ejected at high speed. To prove some of these theories are true, we must analyze the composition of J1249+36. , because if it is the product of a super nova it means that the explosion would have contaminated it when that White dwarf exploded, all its ejected materials would have splashed onto this star and would have filled it with a large amount of heavy elements, even elements that may be strange in our environment. our knowledge.
If it has all those elements and has that peculiar composition, we can deduce that it has been the product of a supernova explosion and is only 400 light years away, which could be very interesting for astronomers.
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