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Habitable planets around the star Gl 581?
Franck Selsis, J. F. Kasting, B. Levrard +3
Radial velocity surveys are now able to detect terrestrial planets at habitable distance from M-type stars. Recently, two planets with minimum masses below 10 Earth masses were rep…
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…
Could we identify hot Ocean-Planets with CoRoT, Kepler and Doppler velocimetry?
F. Selsis, B. Chazelas, P. Borde +16
Planets less massive than about 10 MEarth are expected to have no massive H-He atmosphere and a cometary composition (50% rocks, 50% water, by mass) provided they formed beyond the…
Telescope to Observe Planetary Systems (TOPS): a high throughput 1.2-m visible telescope with a small inner working angle
Olivier Guyon, James R. P. Angel, Charles Bowers +20
The Telescope to Observe Planetary Systems (TOPS) is a proposed space mission to image in the visible (0.4-0.9 micron) planetary systems of nearby stars simultaneously in 16 spectr…
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…