Exoplanet biosignatures: understanding oxygen as a biosignature in the context of its environment
We describe how environmental context can help determine whether oxygen (O2) detected
in extrasolar planetary observations is more likely to have a biological source. Here we …
in extrasolar planetary observations is more likely to have a biological source. Here we …
Populating the periodic table: Nucleosynthesis of the elements
JA Johnson - Science, 2019 - science.org
Elements heavier than helium are produced in the lives and deaths of stars. This Review
discusses when and how the process of nucleosynthesis made elements. High-mass stars …
discusses when and how the process of nucleosynthesis made elements. High-mass stars …
Impact of space weather on climate and habitability of terrestrial-type exoplanets
The search for life in the Universe is a fundamental problem of astrobiology and modern
science. The current progress in the detection of terrestrial-type exoplanets has opened a …
science. The current progress in the detection of terrestrial-type exoplanets has opened a …
The chemical homogeneity of Sun-like stars in the solar neighborhood
The compositions of stars are a critical diagnostic tool for many topics in astronomy such as
the evolution of our Galaxy, the formation of planets, and the uniqueness of the Sun …
the evolution of our Galaxy, the formation of planets, and the uniqueness of the Sun …
Oxygen fugacities of extrasolar rocks: Evidence for an Earth-like geochemistry of exoplanets
Oxygen fugacity is a measure of rock oxidation that influences planetary structure and
evolution. Most rocky bodies in the Solar System formed at oxygen fugacities approximately …
evolution. Most rocky bodies in the Solar System formed at oxygen fugacities approximately …
Plausible constraints on the range of bulk terrestrial exoplanet compositions in the solar neighborhood
Rocky planet compositions regulate planetary evolution by affecting core sizes, mantle
properties, and melting behaviors. Yet, quantitative treatments of this aspect of exoplanet …
properties, and melting behaviors. Yet, quantitative treatments of this aspect of exoplanet …
Inward migration of the TRAPPIST-1 planets as inferred from their water-rich compositions
Multiple planet systems provide an ideal laboratory for probing exoplanet composition,
formation history and potential habitability. For the TRAPPIST-1 planets, the planetary radii …
formation history and potential habitability. For the TRAPPIST-1 planets, the planetary radii …
Exoplanet mineralogy
KD Putirka - Reviews in Mineralogy and Geochemistry, 2024 - pubs.geoscienceworld.org
Mineral properties hold dominion over planetary behavior as their physical and thermal
properties control mantle circulation, plate tectonics, melting behavior, and crustal …
properties control mantle circulation, plate tectonics, melting behavior, and crustal …
From stars to diverse mantles, melts, crusts, and atmospheres of rocky exoplanets
The advent of radial velocity (RV) and transit photometry method has resulted in the
detection of more than 5000 exoplanets since 1995. Of these detected planets, a significant …
detection of more than 5000 exoplanets since 1995. Of these detected planets, a significant …
Influence of sub-and super-solar metallicities on the composition of solid planetary building blocks
B Bitsch, C Battistini - Astronomy & Astrophysics, 2020 - aanda.org
The composition of the protoplanetary disc is thought to be linked to the composition of the
host star, where a higher overall metallicity provides the building blocks for planets …
host star, where a higher overall metallicity provides the building blocks for planets …