Tomasz Nowakowski is a member of the physics.org community.
A new exoplanet has been detected using NASA's TESS satellite. The newly discovered alien world is estimated to be three times the size of Jupiter. There is a paper on the arXiv pre-print server.
The aim of the survey is to find transiting exoplanets, which are planets outside the solar system. More than 6,000 candidate exoplanets have been identified so far, of which more than 300 have been confirmed.
A group of researchers led by Jake T. Clark have recently confirmed another TOI. There is a transit signal in the light curve of an early F3V-dwarf star named TOI-778. The signal was confirmed by follow-up ground-based photometry.
The candidate planet was spotted by TESS in the first year of operation.
TOI-778 b is the new planet. It is almost three times larger than Jupiter. The host of TOI-778 b is about 0.06AU away from it. It was estimated that the planet's equilibrium temperature was 1,560 K.
The parameters of TOI-778 b were used to classify it as a hot Jupiter exoplanet. The so-called "hot Jupiters" are similar to the solar system's largest planet, with less than a week's worth of orbital time. The exoplanets have high surface temperatures because they are very close to their parents. When compared to other hot Jupiters, TOI-778 b appears to be a bit inflated.
The parent star TOI-778 has a fast rotator with a speed of 40 km/s. The star is bigger than the sun. According to the researchers, TOI-778 is approximately 1 billion years old and has an effective temperature of 6,700 K.
The study found that the TOI-778 b is very close to being aligned with the stellar equator. The astronomer thinks that this planet moved through its host's disk rather than through chaotic means.
The authors of the paper concluded that the likely case of disk migration is that of the hot Jupiters.
There is a science network.
All Rights Reserved © 2024
