October 1, 2022


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【▲ 海洋惑星の可能性がある太陽系外惑星「TOI-1452 b」の想像図(Credit: Benoit Gougeon, Université de Montréal.)】

Discovery of a promising candidate for an ‘ocean planet’ 100 light-years away, expected to be spotted by the Webb Space Telescope | sorae space portal site

[▲ صورة لكوكب خارج المجموعة الشمسية TOI-1452 b ، والذي قد يكون كوكبًا محيطيًا (Credit: Benoit Gougeon، Université de Montréal.)]

from the University of MontrealCharles KedioThe research team led by a larger volume of Earth,An exoplanet whose surface may be covered by a vast oceanAnnouncing the results of a study discovered to better understand the nature of this exoplanet, the research teamJames WebbWe are looking forward to observations by space telescopes.

A strong candidate for an oceanic planet relatively close to Earth

The discovery announced this time is about 100 light-years away in the direction of “Draco”Red dwarf “TOI-1452”to spinExoplanet “TOI-1452 b”He.According to the research team, TOI-1452 b is called the so-calledSuper Earth(a rocky exoplanet several times the mass of Earth)Earth’s diameter is about 1.67 timesAbout 4.82 times the mass of the Earthestimated.The orbital period is 11.1 daysAnd the,Equilibrium temperature is about 53°Chas been calculated.

The red dwarf star TOI-1452, which orbits an exoplanet TOI-1452 b, is another starRed dwarf “TIC 420112587”withLianxingI am doingdiameter and massBothAbout a quarter of the sunIt orbits at a distance of about 97 AU

the surface temperature of TOI-1452 is about 2900 °C, and the temperature of TIC 420112587 is about 2800 °C.

* 1 astronomical unit (AU) = about 150 million kilometres, derived from the average distance from the Sun to Earth. 97 AU is about 2.5 times the average distance from the Sun to Pluto (about 40 AU).the analysis’ results ,TOI-1452 b may be about 30% waterhas been shown. This includes Jupiter’s moons Ganymede and Callisto, and Saturn’s moons Titan and Enceladus.Icy moons of the solar systemIt is said to be the same proportion as water in By the way, about 70% of the Earth’s surface is covered by oceans.Water represents less than 1% of the Earth’s mass

I’ve been with.According to the researchers, TOI-1452 b is only a reasonable distance from its parent star (about 0.06 AU) to maintain liquid water on the planet’s surface, giving the entire surface a deep and wide extension. covered by the seaThe possibility of “Planet Ocean”

It seems there

[▲ عرض للمحيط قد يغطي كامل سطح TOI-1452 b (Credit: Benoit Gougeon، Université de Montréal.)]

[▲ انطباع الفنان عن TOI-1452 b ، الذي قد يكون سطحه مغطى بمحيط عميق وواسع (Credit: Benoit Gougeon، Université de Montréal.)]After the results, the research teamTOI-1452 b Observation by Webb Space TelescopeI have high hopes for this because TOI-1452 b is relatively close, about 100 light-years from Earth, and is expected to be used for atmospheric observations and to test hypotheses for the ocean world. Furthermore, TOI-1452 isAreas that can be observed by the Webb Space Telescope all year round

We are also fortunate to be inNear Infrared Imaging/Slit-Free Spectrometer Mounted on the Webb Space Telescope「Nerys」from the University of Montreal, who served as Principal Investigator atProfessor Rene Doyon

He commented, “To better understand TOI-1452 b, observations with the Webb Space Telescope are indispensable. We will book the observations as soon as possible to observe this strange and wonderful world.”TOI-1452 b is an exoplanet exploration satellite of the National Aeronautics and Space Administration (NASA)“he-goat”It was first discovered through observations by Al-KindiMontmegantic ObservatoryThe 1.6-meter telescope on Mauna Kea in Hawaii.Subaru Telescope Canada-France-Hawaii Telescope (CFHT)

It was confirmed by ground-based telescope observations.


Observation results from the Subaru telescope. A red dwarf star 37 light-years away finds a super-Earth!

– TOI-1452 b: SPIRou and TESS reveal a super-Earth in a moderate orbit passing through an M4 dwarf

Text / Matsumura Takehiro

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