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



Planet KELT-11b, which resembles Saturn.

NARIT National Astronomical Research Institute In a Facebook post, researchers #NARIT teamed up to discover “water” in the atmosphere of the planets outside the solar system.

Researchers from NARIT together with an international team of astronomers. Water was discovered on the exoplanet KELT-11b through observations and data collection by the Hubble Space Telescope. Spitzer Space Telescope Tess Space Telescope And other telescopes around the world, including a 0.5 meter telescope at the National Observatory. At Doi Inthanon, Chiang Mai Province, the study was published November 23, 2020 in The Astronomical Journal, Issue 160, No. 6.

The study of the atmosphere of exoplanets is done by observing the phenomenon. # The transits of planets or transit when an exoplanet passes in front of a star. The light from the star is blocked by the planet’s surface. So that astronomers notice a decrease in the brightness of the star. But for planets with an atmosphere During the passage of the page Part of the light from the star is absorbed by elements and molecules in the atmosphere of the planet. Make while observing the transits of planets at different wavelengths Astronomers will see unequal light drops for each wavelength. It depends on the chemical composition of the planet’s atmosphere.

Prof. Supachai Aviphan, researcher with the Exoplanet and Biophysical Research Group One of the co-authors said 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 larger than Jupiter’s radius and orbits the star KELT-11 with an orbital period of just 4.74 days from its small but large mass, making KELT-11b one of the densest planets available. have ever been discovered. Found Due to its low density, astronomers have predicted that the planet KELT-11b will have a thicker atmosphere. Suitable for studying the atmosphere of the planets

A team of astronomers led by Knicole Colon of the NASA Goddard Space Flight Center, along with an international team of astronomers and researcher Dr., observed the KELT-11b teleportation with the Hubble Space Telescope. Spitzer Space Telescope And the Tess Space Telescope And to study the variation of stars during observations with telescopes around the world. Includes a 0.5 meter telescope at the Royal Observatory in honor of the 7th anniversary or the National Observatory Located in Doi Inthanon, Chom Thong District, Chiang Mai Province in April 2018, the study found that the planet KELT-11b has water as a element in the atmosphere. With molecules of HCN, TiO and AlO

Dr. Supachai added that One of the most important studies is currently the study of the atmosphere of planets outside the solar system. In the past, there were many exoplanet atmospheres in the field of research, such as the study of the atmosphere of the exoplanet GJ3470b, which has a blue sky like Earth. Development of a suitable exoplanet rating equation for the study of the atmosphere And the use of machine learning techniques to develop the atmospheric simulation of exoplanets

Additionally, Dr. Since 2019, Sor has continued to develop a network of telescopes for astronomical research, a 0.5-meter Royal Observatory of 7th Anniversary telescope used in this research. It has been replaced by a 1.0 m telescope, which will increase the observational potential for astronomers. To continue doing international research in the future

Compiled: Dr. Supachai Aviphan, Solar System Exoplanet Researcher




Source link