Liked on YouTube: Tau Ceti And Its Planets!

Tau Ceti And Its Planets!
Tau Ceti is a relatively nearby star and one of the closest G-type stars to our solar system. Located 12 light years away in the constellation Cetus, Tau Ceti is a single star that has a similar spectrum to our Sun’s and approximately 81% of the solar mass. Tau Ceti is a stable star whose brightness barely changes and has a hydrogen-helium composition. Moreover, Tau Ceti hosts four confirmed exoplanets: Tau Ceti e, Tau Ceti f, Tau Ceti g and Tau Ceti h. Curious to learn more about Tau Ceti and its planetary system? Keep Watching!! ------------------------------------------------------------------------------------------- Subscribe for more videos:https://www.youtube.com/c/InsaneCuriosity?sub_confirmation=1? Business Enquiries: Lorenzovareseaziendale@gmail.com ------------------------------------------------------------------------------------------- Tau Ceti is a main sequence star, which means that it’s well into the stage of hydrogen-helium thermonuclear fusion in its core. It’s a yellow-orange G-type dwarf star that’s visible from Earth due to its nearby location. It’s crucial to compare Tau Ceti’s features to the Sun’s features since it may have a habitable planet. It has a mass that’s approximately 81 to 91 percent of the solar mass and a radius that’s equal to 75 to 77 percent of the solar radius. However, Tau Ceti has only 59 percent of the solar luminosity, it’s 5.8 billion years old, which means that it’s older than our Sun. In addition to that, Tau Ceti is a metal-deficient star, such that it’s not as enriched as the Sun in elements that are heavier than hydrogen and helium. In particular, it has approximately 22 to 89 percent of the iron solar abundance. Moreover, Tau Ceti has an axial period that is equal to 34 days which means that it rotates more slowly than our Sun. Tau Ceti has a space velocity equal to 37.2 kilometers per second relative to the Sun. This space velocity is used to estimate the orbital path of Tau Ceti in the Milky Way galaxy. Moreover, it is moving with a radial velocity of 17 kilometers per second toward the Sun, which means that it will make its closest approach to the Sun in about 43,000 years and it will be 10.6 light years away from us during that event. Spectroscopic measurements had been used to determine most of the physical properties and features of Tau Ceti such as radius, mass, luminosity and its approximated age. The chemical composition of Tau Ceti reveals so much about its evolutionary status, it has a lower metal abundance than the Sun which indicates that it’s older. In order to understand this, it’s worth noting that younger stars tend to have larger portions of metals in their atmospheres than older stars, because older stars were formed at very early stages of galactic dynamics before any supernova had occurred. Supernovae are the main source of heavy metals which are elements heavier than hydrogen. Therefore, oldar stars such as Tau Ceti are less abundant in metals than younger stars such as our Sun. There's as much interstellar dust surrounding Tau Ceti more than ten times as is present in the solar system. In particular, a large and relatively dense, cold dust disk had been detected around Tau Ceti by using the Submillimetre Common-User Bolometer Array (SCUBA) of the James Clerk Maxwell Telescope at the Joint Astronomy Center on the Big Island of Hawaii. Due to the fact that Tau Ceti is a relatively old star, astronomers believe that this ring of dusty debris is most likely to be produced by collisions between larger comets and asteroids that break them down into smaller pieces. However, that dust disk is similar in size and shape to the disk of comets and asteroids that orbits our Sun; except for the fact that Tau Ceti disk has more mass of cometary and asteroidal material than that currently observed in the solar system. This fact is completely unknown to scientists and astronomers, simply why would Tau Ceti have a more dense cometary disk than the Sun although its mass is relatively less than the solar mass? Such that its gravitational field is expected to attract less cometary and asteroidal material than the Sun, however, it’s neither true nor completely understood till now!! ------------------------------------------------------------------------------------------- "If You happen to see any content that is yours, and we didn't give credit in the right manner please let us know at Lorenzovareseaziendale@gmail.com and we will correct it immediately" "Some of our visual content is under an Attribution-ShareAlike license. (https://ift.tt/1jttIpt) in its different versions such as 1.0, 2.0, 3,0, and 4.0 – permitting commercial sharing with attribution given in each picture accordingly in the video." Credits: Mark A. Garlick / markgarlick.com Credits: Ron Miller Credits: Nasa/Shutterstock/Storyblocks/Elon Musk/SpaceX/ESA Credits: Flickr #InsaneCuriosity #TauCeti #Exoplanets
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