The findings of the British study astrophysics at the University of Warwick, published in the journal Monthly Notices of the Royal Astronomical Society, talk about which planets are more likely to survive the death of their loved stars. Scholars interested in the impact of tidal forces on the planet after turning their stars into white dwarfs. They modeled the behavior of various types of planets after the death of their bodies, and found that young and tight of the worlds has more chances to stay alive. But not so simple.
Computer simulations showed that planets are destroyed, breaking up into small fragments under the action of tidal forces if they fall at the time of death of the main star system in the so-called “radius of destruction”. At the same time, the study found that small planets will be much easier to avoid exposure to the forces of gravity of their bodies than larger worlds.
Scientists were able to identify the most significant factors that can talk about the probability of destruction of the planet. For example, scientists have reported that the survival of the planet in this case will affect not only its size and weight, and viscosity. Planet with a low coefficient of resistance easier are attracted to its star, even if they are at a safe distance, 5 times the “radius of destruction”.
For the study of astrophysics created a simple model of the planet consisting mainly of solid rock.
The study authors note that, our Earth is a much more complex world, which unites several different layers of rocks, therefore, to make assessments in this case is more complicated. At the same time already now it is possible to assume that planets like mercury, Venus and Pluto can survive the death of our Sun, which will surely happen in a few billion years.
“Our study is only concerned with homogeneous rocky planets. Such multi-layer planets like our Earth are significantly more complex to compute, but we will try to find out the probability of its survival,” commented Dr. astrophysics Dimitri Veras of the University of Warwick.
The researchers note that their work can help to reconstruct the events of the deaths of stars in other systems and to understand which planets could exist there before turning its sun into a white dwarf.