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EP: Fachverband Extraterrestrische Physik
EP 4: Planetary atmospheres
EP 4.3: Vortrag
Dienstag, 21. März 2023, 18:30–18:45, ZEU/0160
Simulating exoplanetary atmospheres in the laboratory: comparing experimental data with output from an atmospheric model — •Florence Hofmann1, Paul Mabey1, Egemen Yüzbasi1,2, John Lee Grenfell2, Heike Rauer1,2,3, and Andreas Elsaesser1 — 1Freie Universitaet Berlin, Germany — 2Institute for Planetary Research, Berlin, Germany — 3Berlin University of Technology, Germany
Since the discovery of the first exoplanet, several thousand have have been found including some rocky planets in the habitable zone. The new generation of instruments such as the James Webb Space Telescope will search for spectroscopic signals of atmospheric biosignatures on these worlds. Correctly interpreting such signals requires atmospheric models with consistent and flexible climate and chemical modules over a wide parameter range. With our new Planetary Simulation Chamber at FU Berlin, we are capable of simulating a large set of atmospheric parameters for Earth-like planets in the laboratory. We are able to vary the incoming spectra to simulate the photochemical and climate effects of Earth-like planets orbiting different stars. Many telescopes operate in the VIS/NIR range that corresponds to the fingerprint regions of interesting organic molecules. Our facility allows continuous spectroscopic in-situ monitoring of samples in the UV/IR region and simultaneous mass spectroscopic analysis. In collaboration with our partners at the DLR institute for planetary research, we compare experimental results from our chamber with output from their climate-chemistry model 1D-TERRA.