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According to a new study from the University of California, Irvine University, white dwarfs are the life of planets that have produced a warmer surface environment than a warmer surface environment formed within a habitable zone or within a habitable zone. It may provide a suitable environment.
The drainage ability to orbit the habitable zone of the white dwarf may have more Clement states to compensate for the cooling and dimming of the host star over time. Image credit: David A. Aguilar/CFA.
This study included the University of California Irvine Astronomer. Aokawa Shield Coworkers compared the climate of the water world with an Earth-like atmosphere composition orbiting in habitable zones of two different types of stars: the white d star and the main sequence K-Dwarf star Kepler-62.
Using a 3D global climate computer model, normally used to study the Earth's environment, they say that despite similar stellar energy distributions, the explanet of the white d star is far more than the Kepler-62 deplanet I discovered it was warm.
“White dwarf stars may emit some heat from residual nuclear activity into the outer layer, but they no longer exhibit fusion at their core,” Dr. Shields said.
“For this reason, we don't take into account much of the ability of these stars to host habitable exoplanets.”
“Our computer simulations suggest that if rocky planets exist in orbit, these planets may have more habitable real estate on their surface than previously thought. ”
The White Dwarf habitable zone is much closer to the stars compared to other star settlements, such as Kepler-62.
The authors emphasized that this would result in a much faster rotation period (10 hours) for the white dwarf exoplanet, and that Kepler 62's exoplanet has a 155-day rotation period.
Both planets can be trapped in synchronous orbits with permanent daysides and permanent nightsides, but the rotation of the super-fast white dwarf planets extends the circulation of clouds around the planet.
The much slower 155-day orbital period of the Kepler-62 planet contributes to large dayside liquid cloud masses.
“Synchronous rotation of exoplanets in habitable zones of normal stars like Kepler 62 creates more cloud covers on Earth's dayside, reflecting incoming radiation away from the Earth's surface. I expect that,'' Dr. Shields said.
“That's usually good for planets orbiting near the inner edge of the star's habitable zone, where you can cool off a bit, rather than losing the ocean in a runaway greenhouse.”
“But for a planet orbiting straight in the middle of a habitable zone, that's not a very good idea.”
“The planet orbiting Kepler-62 has so many clouds that it is covered in clouds, sacrificeing valuable habitable surface area in the process.”
“On the other hand, planets orbiting the white dwarf spin so fast that they hardly have cloudy time during the day, so they retain more heat and work in their advantage.”
Less liquid clouds and the strong greenhouse effect on the Nightside creates a warmer state on the white dwar planet compared to the Kepler-62 planet.
“These results suggest that the once thought to be lifeless, white d star stellar environment could present a new pathway for exoplanet and astrobiology researchers to pursue. I'm doing that,” Dr. Shields said.
“With powerful observational capabilities online to assess exoplanet atmospheres and astrobiology, such as those related to the NASA/ESA/CSA James Webb Space Telescope, we are now studying a whole new class of whole new classes. You can enter a new stage of being. The world around the stars that was previously not announced.”
study It was published in Astrophysical Journal.
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Aokawa L. Seals et al. 2025. Increased surface temperature of the habitable white dwarf world compared to the main sequence exoplanet. APJ 979, 45; doi: 10.3847/1538-4357/AD9827
Source: www.sci.news
