Astronomers Discover BEBOP-1c: Tatooine-Like Exoplanet Orbits Twin Stars in a Multiplanetary System — An international team of a |
An international team of astronomers has announced the discovery of a second planet in a rare multiplanetary circumbinary system, known as BEBOP-1 or TOI-1338. Named BEBOP-1c, this planet was discovered using the Doppler method, where the mass of the planet is determined by measuring the velocity of stars. BEBOP-1c has an orbital period of 215 days and a mass 65 times larger than Earth.
Illustration celebrating the discovery of the circumbinary planet BEBOP-1c using the radial-velocity method. Astronomers rarely put their eye to the telescope, but instead the data comes directly to their computers and laptops where it is analyzed and interpreted. BEBOP-1c was detected using the ESPRESSO instrument at the Very Large Telescope in Chile, and by HARPS, at the 3.6m telescope also in Chile. Both are operated by ESO, the European Southern Observatory.
Using state-of-the-art instruments installed on two telescopes located in the Atacama Desert in Chile, the team attempted to measure the mass of the planet noticed by. Despite their best efforts, and years of work, the team could not achieve that, but instead they discovered a second planet, BEBOP-1c and measured its mass.
At the moment only two planets are known in the TOI-1338/BEBOP-1 circumbinary system but more might be identified in the future, with similar observations as performed by the team. “In the case of circumbinary geometries, the disc surrounds both stars. As both stars orbit one another, they act like a giant paddle that disturbs the disc close to them and prevents planet formation except for in regions that are quiet and far away from the binary. It is easier to pinpoint the location and conditions of planet formation in circumbinary systems compared to single stars like the Sun”.
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