A team of American scientists found that stars that look different may be more similar to each other than astronomers previously believed.
Scientists at Rice University conducted simulations and found that “cold” stars (such as the Sun) have dynamic surface behavior. It is this that affects their energetic and magnetic environment. Such stellar magnetic activity can signal that a particular star has planets that are capable of supporting life. The findings of the scientists are published in the Astrophysical Journal.
Researchers have modeled what distant stars look like based on the limited data available. The spin and flux of some stars were determined, as well as their classification (types F, G, K and M), which gave information about their sizes and temperatures.
In a new study, astronomers have found that stars become less active over time, as can be seen in the example of the Sun. According to them, it was more active in the past and this influenced the early chemical composition of the Earth’s atmosphere.
The researchers also applied the models developed for the Sun to other stars, checking how much they adapt to them. It turned out that the “space weather” of each star works in much the same way, affecting the conditions on the respective planets. Also, scientists have found that the processes by which a magnetic field is created may be similar in “cold” stars. The study authors note that this is “surprising and unusual.”