KELT-20b, also known as MASCARA-2b, was an exoplanet announced in 2017. It is an Ultra-hot Jupiter orbiting an A-type star. The carbon monoxide, steam [1] [2] and neutral iron [3] detection in the atmosphere of KELT-20b was announced in 2022.

2024年10月24日 · KELT-20 b is a gas giant exoplanet that orbits a A-type star. Its mass is 3.382 Jupiters, it takes 3.5 days to complete one orbit of its star, and is 0.0542 AU from its star. Its discovery was announced in 2017.

KELT-20b: A giant planet with a period of P~ 3.5 days transiting the V~ 7.6 early A star HD 185603

2017年10月20日 · We report the discovery of KELT-20b, a hot Jupiter transiting a early A star, HD 185603, with an orbital period of days. Archival and follow-up photometry, Gaia parallax, radial velocities, Doppler tomography, and AO imaging were used to confirm the planetary nature of KELT-20b and characterize the system.

2025年3月10日 · We performed high-resolution cross-correlation transmission spectroscopy (HRCCTS) on a single transit time series of KELT-20b, observed with PEPSI on the LBT. We detect Fe I (11.9σ) and Fe II (23.7σ) and tentatively detect Na I (3.4σ) and Cr I (3.3σ) upon combining nineteen in-transit exposures.

KELT-20, also known as MASCARA-2, is an A2 main sequence star in the constellation of Cygnus, about 447 light years away. KELT-20 is the star's KELT designation. It is also designated as MASCARA-2 meaning that it is the second star observed by …

2017年7月5日 · We report the discovery of KELT-20b, a hot Jupiter transiting a V~7.6 early A star with an orbital period of P~3.47 days. We identified the initial transit signal in KELT-North survey data....

Abstract • We report the discovery of KELT-20b, a hot Jupiter transiting a V∼ 7.6 early A star, HD 185603, with an orbital period of P≃ 3.47 days. Archival and follow-up photometry, Gaia parallax, radial velocities, Doppler tomography, and AO imaging were used to confirm the planetary nature of KELT-20b and characterize the system.

We report the discovery of KELT-20b, a hot Jupiter transiting a V∼ 7.6 early A star, HD 185603, with an orbital period of P≃ 3.47 days. Archival and follow-up photometry, Gaia parallax, radial velocities, Doppler tomography, and AO imaging were used to confirm the planetary nature of KELT-20b and characterize the system.

2020年3月10日 · We analyse the transmission spectra of KELT-20b/MASCARA-2b to search for possible thermal inversion agents. The data consist of three transits obtained using HARPSN and one using CARMENES.