Understanding planetary context to enable life detection on exoplanets and test the Copernican principle

J Krissansen-Totton, M Thompson, ML Galloway… - Nature …, 2022‏ - nature.com
The search for life on exoplanets is motivated by the universal ways in which life could
modify its planetary environment. Atmospheric gases such as oxygen and methane are …

Whole planet coupling between climate, mantle, and core: Implications for rocky planet evolution

BJ Foley, PE Driscoll - Geochemistry, Geophysics, Geosystems, 2016‏ - Wiley Online Library
Earth's climate, mantle, and core interact over geologic time scales. Climate influences
whether plate tectonics can take place on a planet, with cool climates being favorable for …

Habitable zones around main-sequence stars: dependence on planetary mass

RK Kopparapu, RM Ramirez… - The Astrophysical …, 2014‏ - iopscience.iop.org
The ongoing discoveries of extra-solar planets are unveiling a wide range of terrestrial mass
(size) planets around their host stars. In this Letter, we present estimates of habitable zones …

Predicted diversity in water content of terrestrial exoplanets orbiting M dwarfs

T Kimura, M Ikoma - Nature Astronomy, 2022‏ - nature.com
Exoplanet surveys around M dwarfs have detected a growing number of exoplanets with
Earth-like insolation. It is expected that some of those planets are rocky planets with the …

Water contents of Earth-mass planets around M dwarfs

F Tian, S Ida - Nature Geoscience, 2015‏ - nature.com
Efforts to identify habitable extrasolar planets have focused on systems around M dwarfs,
faint stars with less than half the solar mass. Habitable planets around M dwarfs are thought …

Limited Archaean continental emergence reflected in an early Archaean 18O-enriched ocean

BW Johnson, BA Wing - Nature Geoscience, 2020‏ - nature.com
The origin and evolution of Earth's biosphere were shaped by the physical and chemical
histories of the oceans. Marine chemical sediments and altered oceanic crust preserve a …

Habitability of exoplanet waterworlds

ES Kite, EB Ford - The Astrophysical Journal, 2018‏ - iopscience.iop.org
Many habitable zone (HZ) exoplanets are expected to form with water mass fractions higher
than that of the Earth. For rocky exoplanets with 10–1000× Earth's H 2 O but without H 2, we …

Predictions for observable atmospheres of trappist-1 planets from a fully coupled atmosphere–interior evolution model

J Krissansen-Totton, JJ Fortney - The Astrophysical Journal, 2022‏ - iopscience.iop.org
The Trappist-1 planets provide a unique opportunity to test the current understanding of
rocky planet evolution. The James Webb Space Telescope is expected to characterize the …

Implications of atmospheric nondetections for TRAPPIST-1 inner planets on atmospheric retention prospects for outer planets

J Krissansen-Totton - The Astrophysical Journal Letters, 2023‏ - iopscience.iop.org
JWST secondary eclipse observations of Trappist-1b seemingly disfavor atmospheres>∼ 1
bar since heat redistribution is expected to yield dayside emission temperature below the∼ …

Water-rich planets: How habitable is a water layer deeper than on Earth?

L Noack, D Höning, A Rivoldini, C Heistracher, N Zimov… - Icarus, 2016‏ - Elsevier
Water is necessary for the origin and survival of life as we know it. In the search for life-
friendly worlds, water-rich planets therefore are obvious candidates and have attracted …