Leen Decin

Dec 18, 2024 | eoswetenschap.eu | Leen Decin

Met antennes verspreid over Zuid-Afrika en Australië kan de SKA mogelijk de structuur van de allereerste sterrenstelsels in ongekend detail in kaart brengen. Door zwakke signalen van waterstofgas uit de periode van reïonisatie – slechts enkele honderden miljoenen jaren na de oerknal – te detecteren, hopen astronomen cruciale inzichten te verkrijgen in de vorming van het kosmische web.

Nov 15, 2023 | nature.com | Achrène Dyrek |Michiel Min |Leen Decin |Jeroen Bouwman |Nicolas Crouzet |Thomas Konings | +23 more

AbstractWASP-107b is a warm ( ~ 740 K) transiting planet with a Neptune-like mass of ~ 30.5 M⊕ and Jupiter-like radius of ~ 0.94 RJ 1,2 whose extended atmosphere is eroding 3. Previous observations showed evidence for water vapour and a thick high-altitude condensate layer in WASP-107b’s atmosphere 4,5.

Nov 6, 2023 | nature.com | David Barrado |Pascal Tremblin |Ioannis Argyriou |Leen Decin |Thomas J. Henning |Bart Vandenbussche | +16 more

AbstractBrown dwarfs serve as ideal laboratories for studying the atmospheres of giant exoplanets on wide orbits as the governing physical and chemical processes in them are nearly identical1,2. Understanding the formation of gas giant planets is challenging, often involving the endeav our to link atmospheric abundance ratios, such as the carbon-to-oxygen (C/O) ratio, to for mation scenarios3.