Publication Abstracts

Guzewich et al. 2020

Guzewich, S., J. Lustic-Yaeger, C.E. Davis, R.K. Kopparapu, M.J. Way, and V.S. Meadows, 2020: The impact of planetary rotation rate on the reflectance and thermal emission spectrum of terrestrial exoplanets around Sunlike stars. Astrophys, J., 893, no. 2, 140, doi:10.3847/1538-4357/ab83ec.

Robust atmospheric and radiative transfer modeling will be required to properly interpret reflected-light and thermal emission spectra of terrestrial exoplanets. This will help break observational degeneracies between the numerous atmospheric, planetary, and stellar factors that drive planetary climate. Here, we simulate the climates of earthlike worlds around the Sun with increasingly slow rotation periods, from earthlike to fully Sun-synchronous, using the ROCKE-3D general circulation model. We then provide these results as input to the Spectral Planet Model, which employs the Spectral Mapping Atmospheric Radiative Transfer model to simulate the spectra of a planet as it would be observed from a future space-based telescope. We find that the primary observable effects of slowing planetary rotation rate are the altered cloud distributions, altitudes, and opacities that subsequently drive many changes to the spectra by altering the absorption band depths of biologically relevant gas species (e.g., H2O, O2, and O3). We also identify a potentially diagnostic feature of synchronously rotating worlds in mid-infrared H2O absorption/emission lines.

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BibTeX Citation

@article{gu03100n,
  author={Guzewich, S. and Lustic-Yaeger, J. and Davis, C. E. and Kopparapu, R. K. and Way, M. J. and Meadows, V. S.},
  title={The impact of planetary rotation rate on the reflectance and thermal emission spectrum of terrestrial exoplanets around Sunlike stars},
  year={2020},
  journal={Astrophys, J.},
  volume={893},
  number={2},
  pages={140},
  doi={10.3847/1538-4357/ab83ec},
}

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RIS Citation

TY  - JOUR
ID  - gu03100n
AU  - Guzewich, S.
AU  - Lustic-Yaeger, J.
AU  - Davis, C. E.
AU  - Kopparapu, R. K.
AU  - Way, M. J.
AU  - Meadows, V. S.
PY  - 2020
TI  - The impact of planetary rotation rate on the reflectance and thermal emission spectrum of terrestrial exoplanets around Sunlike stars
JA  - Astrophys, J.
VL  - 893
IS  - 2
SP  - 140
DO  - 10.3847/1538-4357/ab83ec
ER  -

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