Representação artística do exoplaneta TOI-1452 b; sua massa sugere composição de materiais mais leves que os da crosta terrestre, sendo água o candidato mais viável (Crédito: Divulgação/Benoit Gougeon/Université de Montréal)

New exoplanet may be a super watery world – half a bit

“Super Earth” is a term used by scientists to classify A extrasolar planet With the possibility of harboring life and humans in a (very) distant future; It has Earth-like conditions, where “super” refers to a larger orb.

TOI-1452 Bidentified by an international team of researchers, in a study led by the University of Montreal, in Canada, is one of these super-terrestrial planets, but it has an intriguing detail: its mass indicates that it is a planet completely covered in water, with the solid part much smaller than the terrestrial part.

She doesn’t have Kevin Costner, which is fine (Credit: Reproduction / Gordon Company / Davis Entertainment / Licht-Mueller Film Corporation / Universal Pictures / NBCUniversal)

The TOI-1452 b was identified thanks to the use of the TESS space telescope (Transiting Exoplanet Survey Satellite), which was developed to map an area 400 times larger than the Kepler mission could observe, in combination with equipment on Earth. The extrasolar planet was located in the constellation of the Dragon, “only” 100 light-years away, orbiting a red dwarf of a binary system.

The star in question, clearly called TOI-1452 (the names of the exoplanets identified always follow star designations, with suffixes in alphabetical order), is slightly cooler than the Sun, but the planet’s orbit lies within the so-called Sun’s zone: temperate, at an ideal distance for water liquid, which opens the possibility of preserving life.

However, the TOI-1452b has its share of quirks. First, the period of its revolution, during which one revolution is made around its star, that is, its “year” (note: it is not known where the word “translate” came from which is a mistake), is only 11 days. . Second, although it is larger and has a greater solid mass than Earth, its density is not equivalent.

According to the researchers, many of the recently identified exoplanets have density values ​​that can be explained only if a significant part of their total mass consists of materials lighter than that of the rocky part of the Earth.

The candidate element to be the most abundant, of course, is water. Analysts studied the data and concluded that it represents 30% of the mass of an exoplanet, while it makes up only 0.05% of the mass of Earth.

Artist's view of an exoplanet TOI-1452 b;  Image copyright Disclosure / Benoit Gougeon / Université de Montréal

Artist’s view of an exoplanet TOI-1452 b; Image copyright Disclosure / Benoit Gougeon / Université de Montréal

exoplanet without continents

It doesn’t take much thought to accept the possibility of an exoplanet containing a single ocean wide and deep. Some of the natural satellites of Jupiter and Saturn, such as Europa (where we shouldn’t go) and Enceladus, contain huge amounts of water under their thick icy crusts, formed due to the enormous distance between them and the Sun.

The difference between them and TOI-1452 b, of course, is this presence in a zone that prevents the oceans from freezing. On the other hand, there is a very small chance that there are bits of land on it. It’s water as far as the eye can see and nothing else.

According to Charles Kedio, a graduate student and member of the Institute for Research on Exoplanets (iREx) at the University of Montreal, a new celestial body is actually a likely candidate to be the first properly identified ocean world, but there is also a possibility that TOI-1452b may be an exoplanet. Ordinary rocky with a very light atmosphere, composed of helium and hydrogen, or even none of these planets and just a dwarf planet like Ceres, the first asteroid identified.

In addition, the current location of TOI-1452 bo makes it a candidate for study by the James Webb Space Telescope, so soon we will be able to learn details about the composition of its atmosphere (if there is one), and whether it only has water everywhere. , to assess whether it would become a feasible option for colonization, if we would need to send boats with our ships.


Note: I could have quoted Kamino, but I preferred to point out a bad movie only lol.

the reviewer

Caduceus, C.; and others. TOI-1452 b: SPIRou and TESS reveal a super-Earth in a moderate orbit passing through an M4 dwarf. Astronomical JournalVolume 164, No. 3, 28 pages, 12 August 2022. Available here.

Source: NASA, Popular Science

#exoplanet #super #watery #world #bit

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