Discovered Exoplanet Brighter Than Some Stars!
We will talk about an exoplanet.
Its name is WASP 189 b.
The question is why are we going to talk about it?
WASP-189 b is one of the most highly irradiated planets known thus far, with a dayside equilibrium temperature of ∼ 3400 K.
This tells us that WASP 189 b is bright.
Actually, it is very bright.
It could be brighter than some stars.
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In this video, we will tell you how this discovery was made, which instruments and techniques were used to analyze its characteristics. Also, keep in mind that we already knew WASP 189 b.
But we didn’t know him so well.
Follow us on this journey somewhere 325 light-years away from the Sun: We are sure you will be amazed by the things you will learn in this video.
The one about WASP 189b isn’t a new discovery.
As we’ve already said, we detected him in 2018, orbiting around the A-type star WASP 189, at a distance of about 99 parsecs.
But the CHEOPS mission made its debut trying to obtain some further pieces of information about this planet.
In fact, the European Space Agency’s CHaracterising Exoplanet Satellite (CHEOPS) space telescope reached space in December of 2019, achieving a Sun-synchronous orbit some 700 kilometres up. The instrument has begun its observations of stars near the Sun that are already known to have planetary companions. The idea is to use the 30 cm optical telescope to constrain radius information for these worlds, previously identified in transit and radial velocity studies.
Transiting planets are particularly useful here because tightening up their radius measurements means we get a better idea of their density, factoring in mass estimates provided by subsequent radial velocity follow-ups.
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