We observed ten secondary eclipses of the planet with CHEOPS. We aim to detect and characterize the optical secondary eclipse of the planet LTT 9779 b using the CHaracterising ExOPlanet Satellite (CHEOPS) to measure the planetary albedo and search for the signature of atmospheric condensates. If such signals can be detected and modeled, however, they can provide planetary albedos, thermal characteristics, and information on absorbers in the upper atmosphere.Īims. Optical secondary eclipse measurements of small planets can provide a wealth of information about the reflective properties of these worlds, but the measurements are particularly challenging to attain because of their relatively shallow depth.
Observatoire Astronomique de l’Université de Genève,ĭepartamento de Astronomía, Universidad de Chile,Ĭontext. Jet Propulsion Laboratory, California Institute of Technology, Las Campanas Observatory, Carnegie Institution of Washington, Colina El Pino,ĭepartment of Physics and Astronomy, University of Kansas,ĭepartment of Physics and Astronomy, The University of New Mexico, INAF, Osservatorio Astrofisico di Catania,Ĭentre for Exoplanet Science, SUPA School of Physics and Astronomy, University of St Andrews, Université Côte d’Azur, Observatoire de la Côte d’Azur, CNRS, Vinés 12Į-mail: de Estudios Astrofísicos, Facultad de Ingeniería y Ciencias, Universidad Diego Portales,Ĭentro de Astrofísica y Tecnologías Afines (CATA), Astronomical objects: linking to databases.Including author names using non-Roman alphabets.Suggested resources for more tips on language editing in the sciences Punctuation and style concerns regarding equations, figures, tables, and footnotes "To steam up a bathroom you can either cool the air until water vapor condenses, or you can keep the hot water running until clouds form because the air is so saturated with vapor that it simply can't hold anymore," said Vivien Parmentier, co-author of a study in the journal Astronomy and Astrophysics. However, it turned out that the atmosphere of LTT9779b is so saturated with metals and silicate vapors that droplets do form - including raindrops composed of titanium. Exceptions include ice worlds like Jupiter's satellite Europa or cloudy ones like Venus.Īlthough it reflects "like a mirror," the researchers said LTT9779b seemed too hot for clouds, even if they were made of metal or glass. Most planets and moons have a low albedo because they absorb, rather than reflect, light. Researchers found the planet was a conundrum from the very beginning because of its high reflectiveness, also called albedo in scientific terminology. LTT9779b - some 260 light years from Earth- was initially discovered by NASA in 2020, but the latest discoveries were made in a follow-up study by the European Space Agency's exoplanet-spotting Cheops space telescope.
It's the star-facing side of the planet that has a temperature of about 2,000 degrees Celsius. The planet - about the size of Neptune- lies close to its star, orbiting it every 19 hours. The brightest planet to be discovered outside our solar system to date, LTT9779b has been described by researchers as "a planet that shouldn't exist." What we know about the planet The announcement was published by the European Space Agency (ESA). Scientists on Monday announced the discovery of a scorching world with temperatures of up to 2,000 degrees Celsius (over 3,600 degrees Fahrenheit), where glass-like silicate and metals boil into clouds.
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