527 citations · 2.6k across the 25 of their papers we have counts for
13 papers · 1 filter
Abiotic formation of O2 and O3 in high-CO2 terrestrial atmospheres
A. Segura, V. S. Meadows, J. F. Kasting +2
Previous research has indicated that high amounts of ozone (O3) and oxygen (O2) may be produced abiotically in atmospheres with high concentrations of CO2. The abiotic production o…
Spectral signatures of photosynthesis II: coevolution with other stars and the atmosphere on extrasolar worlds
Nancy Y. Kiang, Antigona Segura, Giovanna Tinetti +6
As photosynthesis on Earth produces the primary signatures of life that can be detected astronomically at the global scale, a strong focus of the search for extrasolar life will be…
Biosignatures from Earth-Like Planets Around M Dwarfs
Antigona Segura, James F. Kasting, Victoria Meadows +5
Coupled one-dimensional photochemical-climate calculations have been performed for hypothetical Earth-like planets around M dwarfs. Visible, near-infrared and thermal-infrared synt…
Disk-averaged Spectra & light-curves of Earth
G. Tinetti, V. S. Meadows, D. Crisp +6
We are using computer models to explore the observational sensitivity to changes in atmospheric and surface properties, and the detectability of biosignatures, in the globally aver…
Disk-averaged synthetic spectra of Mars
Giovanna Tinetti, Victoria S. Meadows, David Crisp +3
The principal goal of the NASA Terrestrial Planet Finder (TPF) and ESA Darwin mission concepts is to directly detect and characterize extrasolar terrestrial (Earth-sized) planets.…
Observations and Implications of the Star Formation History of the LMC
J. A. Holtzman, J. S. Gallagher, A. A. Cole +3
We present derivations of star formation histories based on color-magnitude diagrams of three fields in the LMC from HST/WFPC2 observations. A significant component of stars older…