Is small. They discovered it crossing the galaxy. She may be on a trajectory that will cause her to leave the Milky Way completely due to her speed. Is it the fastest star in the galaxy? The research is led by University of California Astronomy Professor Adam Burgasser. He presented during the American Astronomical Society (AAS) meeting.

Slipping away
The star, called J1249+36, was first detected by scientific volunteers. They analyze enormous amounts of data collected over the last 14 years by NASA. The fastest star in the galaxy stood out for its speed. It moves at about 600 kilometers per second (2 million kilometers per hour). It is fast enough to escape the gravity of the Milky Way. He would be a potential “hyperspeed” star.
It is a rare L subdwarf, a class of stars with very low mass and temperature. They are the oldest stars in the Milky Way. “It was exciting to find it,” the researchers said. Its orbit through the Milky Way could be predicted. “Here it is where it gets interesting. “Its speed and trajectory showed that it is going so fast that it can escape the Milky Way,” Burgasser said in a statement.
How do you explain the unusual trajectory? It may have originally been the low-mass companion of a white dwarf. They are the remaining cores of stars that have exhausted their nuclear fuel and have become extinct. When a stellar companion is in very close orbit to a white dwarf, it can transfer mass. It results in periodic outbursts called novae. If the white dwarf accumulates too much mass, it can collapse and explode as a supernova.

Uncertain origin
«In this type of supernova, the white dwarf is completely destroyed. “Her companion breaks free and flies away at enormous speed,” said Burgasser. «Our calculations show that this scenario works. However, the white dwarf is no longer there. And the remains of the explosion, which probably occurred several million years ago, have already dissipated. “We do not have definitive proof that this is its origin.” How far will our traveling star go?