They identify five planetary systems that could be suitable for life

A new mathematical framework predicts multi-star systems Kepler-34, -35, -38, -64 and -413, With circular giants, It has stable housing.

For almost half a century, the creators of Star Wars predicted a living planet, Tatooine, Revolves around a pair of stars. Now scientists have found new evidence that five known multi-star systems, Kepler-34, -35, -38, -64 and -413, They are potential candidates for life preservation.

A newly developed mathematical framework has allowed researchers at New York University in Abu Dhabi and the University of Washington to prove that these systems, Between 2,764 and 5,933 light-years from Earth, In the constellations Lira and Swan, maintains a constant “habitable zone”, a region around the stars where Liquid water can persist on the surface of any yet-to-be-discovered terrestrial planet. Among these systems, the Kepler-64 has at least four stars orbiting each other in its center, while the other systems have two stars.

This will be the country in Kepler-1649c (Photo: AFP)

It is known that everyone has it at least A giant planet like Neptune Or more. This study, published in Frontiers in Astronomy and Space Sciences, is a demonstration of the principle that the presence of giant planets in binary systems does not preclude the existence of life-supporting worlds.

“Life is evolving more on planets in the habitable zone of your system, just like Earth. Here we investigate whether there is a habitable area Within the nine known systems with two or more stars orbiting giant planets. We show for the first time that the Kepler-34, -35, -64, -413 and especially the Kepler-38 Suitable for hosting terrestrial worlds with oceansThe corresponding author, Dr. Nikolaos Georgakarakos, a research associate in the Department of Science at New York University in Abu Dhabi, says in a statement.

The scientific consensus is that most stars host planets. Since 1992, exoplanets have been rapidly discovered: so far 4,375 have been confirmed, 2,662 of which were first detected by the Kepler Space Telescope during its 2009-2018 mission to study the Milky Way. NASA’s TESS telescope and missions from other agencies instead detected more exoplanets European Space Agency It will launch its PLATO spacecraft to search for exoplanets in 2026.

Twelve of the exoplanets discovered by Kepler are “circular”, meaning they orbit a close pair of stars. Binary systems are common and are estimated to account for between half and three-quarters of all stellar systems. So far Giant exoplanets have been discovered only in binary systemsBut it is possible that smaller terrestrial planets and moons avoided detection.

Gravitational interactions within multi-star systems, especially if they contain other large bodies such as giant planets, await even more hostile conditions to the origin and survival of life. For example, Planets can collide with stars or escape from orbit, While the surviving Earth-like exoplanets will develop elliptical orbits, and will experience strong periodic changes in the intensity and spectrum of radiation.

Illustration of Kepler 38-B, a gas giant planet orbiting Kepler 38 (Image: NASA)

“We have long known that two-star systems that do not contain giant planets have the ability to host habitable worlds. What we have shown here is that in a large part of these systems, Earth-like planets can still be habitable even in the presence of giant planetsSays co-author Professor Ian Dobbs Dickson, who is also from New York University in Abu Dhabi.

Researchers use previous research to predict the existence, location, and extent of the permanent habitable region in binary systems with giant planets. First they extract the equations to consider Layer, mass, luminosity and power spectral distribution From the stars, along with the extra gravitational impact of the giant planet. The eccentricity (ie the degree of ellipse in orbit), the sub-main axis and the period of the hypothetical terrestrial orbit, as well as the dynamics of the star’s intensity and spectrum are also considered. Radiation that affects its atmosphere. Another factor is the “climatic inertia” of a terrestrial planet, ie the speed at which the atmosphere reacts to changes in radiation.

Then they look Nine known double star systems with giant planets, All of them were discovered with the Kepler telescope, to determine if habitable areas exist and if they are “quiet enough” to host worlds that may be alive.

The authors showed for the first time that there are constant habitable areas in Kepler-34, -35, -38, -64 and -413. These regions are between 0.4 and 1.5 astronomical units wide (au)., Starting at distances between 0.6 and 2 or from the center of mass of binary stars.

“In contrast, the range of habitable areas in two other binary systems, Kepler-453 and -1661, is about half the expected size, as the giant planets in those systems would destabilize the orbits of additional habitable worlds. For the same reason, Kepler-16 cannot host E-1647 additional habitable planets.

Tatooine, the fictional planet where Luke Skywalker’s character was born, has two suns. (Image: Star Wars)

Of course There is a possibility that life exists outside the habitable zone or on moons orbiting giant planets“This terrain may be less desirable for us,” says co-author Dr. Siegfried Eagle of the University of Washington.

“Our best candidate to host a potentially habitable world is The binary system Kepler-38, about 3,970 light-years from Earth, may contain a planet the size of Neptune.He says, Georgiacarakos.

“Our study confirms that even giant planetary double-star systems are hot targets in the search for Earth 2.0,” he says.

With information from DPA.