An iron-rich atmosphere for the planet KELT-9b. The study: “The GAPS Programme with HARPS-N at TNG. XIX. Atmospheric Rossiter-McLaughlin effect and improved parameters of KELT-9b” of F. Borsa (INAF-OA di Brera) recently appeared on A&A
To date (October 2019), 4073 exoplanets have been confirmed, while 4495 are still candidates. The vast majority of these exoplanets have been discovered with two techniques: the analysis of transits (e.g.: measuring the decline of stellar luminosity during the passage of the planets in across the stellar disk) and radial velocity (by detecting, thanks to the Doppler effect and spectroscopic
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