Research & Activities


Ramirez, Ramses

Ramirez, Ramses
Ramirez, Ramses
Research Scientist
Planetary Habitability and Habitable Zones, Early Mars


Main Publication List and Awards


Yan, J., Ding, F., Ramirez, R.M., et al., 2017. Abrupt climate transition of icy worlds from snowball to moist or runaway greenhouse. Nature Geoscience, doi:10.1038/ngeo2994

Ramirez, R.M., 2017. A warmer and wetter solution for early Mars and the challenges with transient warming. Icarus 297, 71 – 82.

Ramirez, R.M., Kaltenegger, L., 2017. A volcanic hydrogen habitable zone. The Astrophysical Journal Letters, 837, L4, 1

Ramirez, R.M., 2017. Could cirrus clouds have warmed early Mars? Icarus 281, 248 – 261

Ramirez, R.M., 2016. Atmosphere's solar shock. Nature Geoscience. doi:10.1038/ngeo2728

Ramirez, R.M., Kaltenegger, L., 2016. Habitable zones of post-main-sequence stars. The Astrophysical Journal, 823, 6, 14 pp

Sloan, G.C., Goes, C., Ramirez, R.M., Kraemer, K.E., Engelke, C.W., 2015. Infrared spectral properties of M-giants. The Astrophysical Journal, 811, 1, 45

Batalha, N., Goldman, Shawn-Domagal, Ramirez, R.M., Kasting, J.F., 2015. Testing the early Mars H2-CO2 hypothesis with a 1-D photochemical model. Icarus, 258, 337 – 349

Ramirez, R.M., Kaltenegger, L., 2014. Habitable zones of pre-main-sequence stars. The Astrophysical Journal Letters, 797, 2, L25, doi:10.1088/2041-8205/797/2/L25

Ramirez, R.M., Kopparapu, R., Lindner, V., Kasting, J.F., 2014. Can increased atmospheric CO2 levels trigger a runaway greenhouse? Astrobiology, 14, 8, doi:10.1089/ast.2014.1153

Ramirez, R.M., Kopparapu R., Zugger, M., Robinson, T.D., Freedman, R., Kasting, J.F., 2014. Warming early Mars with CO2 and H2. Nature Geoscience, 7, 59 – 63

Kopparapu, R. K.,Ramirez, R.M., Kasting, James, Eymet, V; et al, 2014. Habitable zones around main-sequence stars: dependence on planetary mass. The Astrophysical Journal Letters , 787, L29, doi:10.1088/2041-8205/787/2/L29

Kasting, J.F., Kopparapu, R., Ramirez, R.M., Harman, C., 2013. Remote life detection criteria, habitable zone boundaries, and the frequency of Earth-like planets around M- and late-K stars. Proceedings of the National Academy of Sciences, doi: 10.1073/pnas.1309107110

Kopparapu, R., Ramirez, R.M.(co-primary author), Kasting, J., et al., 2013. Habitable zones around main-sequence stars: new estimates. The Astrophysical Journal, 765, 2, 131