The collision of two stars will cause one of the most striking events in the sky, but only for a few weeks.
At the end of the 21st century, mankind will see a new brightest star. As a result of the collision of two stars in the “V Arrows” (V Sagittae) system, a “guest star” will appear in the sky. This was reported by a team of astronomers from the University of Louisiana at the 235th meeting of the American Astronomical Community in Honolulu.
The star system “V Arrows” is located 7.8 thousand light-years from Earth in the constellation Arrows and so far it is difficult to find in the sky even with the help of medium-sized telescopes. The system consists of a red dwarf, which revolves around a white dwarf – a dead star, consisting of extremely dense matter.
V Arrows is considered a cataclysmic variable double star: a white dwarf gradually attracts the substance of a companion star, showing destructive activity. Unlike other similar systems, in V Arrows the mass of the companion star exceeds the mass of the white dwarf by more than three times.
The stars in “V Arrows” are at the final stage of rapprochement, and, according to scientists, will collide at the end of the 21st century. Astronomers cannot give a specific date, but suggest that the collision will occur in a 16-year gap by 2083 – between 2067 and 2099.
According to one of the scientists at the University of Louisiana, Bradley Schaefer (Bradley Schaefer), over the next decades, the brightness of the star will begin to grow rapidly. In the last days of a deadly rapprochement, the companion star’s substance will move to the white dwarf, giving birth to a supermassive solar wind.
According to the calculations of scientists, the brightness of the “V Arrows” will reach brightness in a supernova explosion. The new hybrid star will have a white dwarf core, a layer of burning hydrogen and an outer shell of gas. Astronomers suggest that the star will last in peak brightness for only about a month.
According to Schaefer, the merger of the “V Arrows” will be brighter than the brightest new star, and the last time a brighter “guest star” appeared in the sky in 1604, when the Kepler supernova explosion occurred.