Rice University Scientists have done new research on cool stars in space. They illustrated that there are “cool” stars similar to the Sun. These have dynamic surface behaviour which shows the energetic and magnetic environments.
The Scientists assumed that the stellar magnetic activity would be a sign of host planets around the stars. They reported to NASA that It is also possible that a star might be hosting the planets which could support Life.
Cool Stars Dynamic Characteristics
Firstly the Small stars appeared with similar dynamics to the Sun. This is a key to planet habitability. Then the Researchers set out a model to state what these stars are like according to the data available.
They classified the stars on different levels and named them as type F, G, K, and M. This gives information about their sizes and temperatures. These types would also determine the spin and flux of the stars.
All stars have an angular momentum and they used to Spin down over their lifetime. The Scientists compared their research with the properties of the Sun. They said that the measure of stellar activity, the speed of rotation and the distribution of magnetic flux are similar to the cool Stars.
According to their research model the cool stars might have space weather which works in the same way as the Sun does.
About Cool Stars and Exoplanet
There are different properties of stars. The hotter stars and the cooler stars are there in Space. Hotter stars emit high energy and ultraviolet light. Cooler stars give off infrared or near infrared light. This has a lower energy.
Planets which orbit cooler stars are observed as warmer and less icy. The planets orbiting the hotter stars would be much cooler. But they may receive the same amounts of light.
Researchers said that the possible existence of life could be prioritised towards cooler stars. But it is not true for all the circumstances with the stars.
The Research done by Rice University Scientists
The main Scientists who are working on the research model are Alison Farrish the postdoctoral researcher, David Alexander the Astrophysicist and Christopher Johns-krull.
According to the Johns-krull, all the stars fuse hydrogen and helium in their cores. The energy is carried in the form of photons toward the surface. This phenomenon is understood to be the one which is true for all the stars including the Sun.
He said that their team is taking models that are developed for the sun and how they are possibly applied on Stars. Alison has developed the Rice Model to characterize the cool stars to support the exoplanets’ existence.
He suggested that effects of higher energy emissions from the stars on different timescales is quite important to exoplanet studies. Alison’s model can be used to study the large-scale structure of very magnetically active stars. After which this would allow us to know about how these cool stars and their disks interact.
Statement of Alexander about Alison’s Model
He said that Alison’s model could be applied to exoplanets around M or F or K. This would be applicable to all except G type. This would suggest something more interesting about Stellar Physics. He further added that it would be a bit surprising that this includes the stars unlike the Sun which are convective down to their cores.
He said that stars with less than one third of the mass of the Sun wouldn’t have a radiative zone. On the other hand, the generation of magnetic fields depends on the boundary between radiative and convection zones.
Similarly the research shows that there are many ways through which it could be suggested that the stars behave like the sun. It depends on your peculiarities to what extent you would compare the probabilities.