Detecting and characterising exoplanet atmospheres remains challenging because atmospheric signals can be comparable to residual noise and instrumental/astrophysical systematics. Spectral features span from a few ppm for small planets up to ∼103 ppm for warm/hot giants, while high-quality JWST time-series spectroscopy typically reaches ∼10–50 ppm (occasionally ∼100–200 ppm in the presence of stellar variability or […] The post A Public Dataset O…
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