author={Renyu Hu and Bethany L. Ehlmann and Sara Seager},
  journal={The Astrophysical Journal},
We investigate spectra of airless rocky exoplanets with a theoretical framework that self-consistently treats reflection and thermal emission. We find that a silicate surface on an exoplanet is spectroscopically detectable via prominent Si‐O features in the thermal emission bands of 7‐13 μm and 15‐25 μm. The variation of brightness temperature due to the silicate features can be up to 20 K for an airless Earth analog, and the silicate features are wide enough to be distinguished from… 

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