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NARIT researchers teamed up to discover “water” on planets outside the solar system.


Planet KELT-11b, which looks like Saturn.

In a Facebook report by the NARIT National Institute for Astronomical Research, researchers #NARIT joined forces to discover “water” in the atmosphere of planets outside the solar system.

Researchers from NARIT in collaboration with an international team of astronomers. Water was discovered on the exoplanet KELT-11b using Hubble Space Telescope observations and data collection. Spicera Space Telescope Tesa Space Telescope And other telescopes around the world, including the 0.5-meter telescope at the National Observatory. In Doi Inthanon, Chiang Mai Province, the study was published in The Astronomical Journal, 160th Edition, no. 6, 23 November 2020.

The study of exoplanet atmospheres is carried out by observing the phenomenon. # Planetary transit or transit when an exoplanet passes a star. The light of the star is blocked by the surface of the planet. Forcing astronomers to notice a decrease in the brightness of a star But for planets with an atmosphere During the transition of a leaf Part of the light of a star is absorbed by elements and molecules in the planet’s atmosphere. Form by observing the transits of planets of different wavelengths Astronomers will see an uneven drop of light for each wavelength. It depends on the chemical composition of the planet’s atmosphere.

Prof. Supahajs Avifans, Ph.D. researcher, exoplanet and biophysics research group One of the co-authors said that the work studied the atmosphere of the exoplanet KELT-11b – a Saturn-like planet with a mass only 0.171 times that of Jupiter. It is 1.35 times the radius of Jupiter, orbiting the star KELT-11 with an orbital period of only 4.74 days from its small but large mass, making KELT-11b one of the densest planets ever discovered. Found Due to low density, astronomers have predicted that the planet KELT-11b will have a thicker atmosphere. Suitable for studying the planetary atmosphere

A team of astronomers led by Nicholas Colon of NASA’s Godard Space Flight Center, along with an international team of astronomers and researcher Dr., observed the KELT-11b teleportation with the Hubble Space Telescope. Spicera Space Telescope And Space Telescope Tess Explore stellar variations during observations with telescopes around the world. Including a 0.5-meter telescope at the Royal Observatory to mark the 7th anniversary or the National Observatory A study in Doi Inthanon, Chom Thong District, Chiang Mai Province, in April 2018, revealed that the atmospheric element of planet KELT-11b is water. With HCN, TiO and AlO molecules

Dr. Supachai added. Currently, the study of planetary atmospheres outside the solar system is one of the main studies. In the past, many exoplanet and biomedical studies have been conducted in exoplanet atmospheres, such as the study of an exoplanet GJ3470b atmosphere with a blue sky like the Earth. Development of an Appropriate Exoplanar Rating Equation for Atmospheric Research Use of Machine Learning Techniques to Develop Exoplanar Atmospheric Simulations

In addition, since 2019, Dr Sor has continued to develop a network of telescopes for astronomical research, the 0.5-meter telescopes used in this study at the 7th Anniversary Royal Observatory. It has been replaced by a 1.0 m telescope, which will increase astronomers’ ability to observe. Continue research internationally in the future

Compiled by: Dr. Supachai Aviphan, Exoplanet Researcher of the Solar System

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