TRANSITS OF EARTH-LIKE PLANETS
@article{Kaltenegger2009TRANSITSOE, title={TRANSITS OF EARTH-LIKE PLANETS}, author={Lisa Kaltenegger and Wesley A. Traub}, journal={The Astrophysical Journal}, year={2009}, volume={698}, pages={519-527} }
Transmission spectroscopy of Earth-like exoplanets is a potential tool for habitability screening. Transiting planets are present-day "Rosetta Stones" for understanding extrasolar planets because they offer the possibility to characterize giant planet atmospheres and should provide an access to biomarkers in the atmospheres of Earth-like exoplanets, once they are detected. Using the Earth itself as a proxy we show the potential and limits of the transiting technique to detect biomarkers on an…
248 Citations
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References
SHOWING 1-10 OF 47 REFERENCES
Biomarkers in the transmission spectrum of Earth-size transiting planets
- Physics, Geology
- 2005
A variety of terrestrial planets with different physical parameters and exotic atmospheres might plausibly exist outside our Solar System, waiting to be detected by the next generation of…
Biosignatures from Earth-like planets around M dwarfs.
- Physics, GeologyAstrobiology
- 2005
Coupled one-dimensional photochemical-climate calculations have been performed for hypothetical Earth-like planets around M dwarfs to determine which biosignature gases might be observed by a future, space-based telescope.
Remote sensing of planetary properties and biosignatures on extrasolar terrestrial planets.
- Geology, PhysicsAstrobiology
- 2002
It is found that both the mid-IR and the visible to near-IR wavelength ranges offer valuable information regarding biosignatures and planetary properties; therefore both merit serious scientific consideration for TPF and Darwin.
Spectral Evolution of an Earth-like Planet
- Geology, Physics
- 2006
We have developed a characterization of the geological evolution of the Earth's atmosphere and surface in order to model the observable spectra of an Earth-like planet through its geological history.…
M stars as targets for terrestrial exoplanet searches and biosignature detection.
- Physics, GeologyAstrobiology
- 2007
It is concluded that attempts at remote sensing of biosignatures and nonbiological markers from M star planets are important, not as tests of any quantitative theories or rational arguments, but instead because they offer an inspection of the residues from a Gyr-long biochemistry experiment in the presence of extreme environmental fluctuations.
Habitable planets around the star Gliese 581
- Geology, Physics
- 2007
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 reported in a triple…
The MEarth project: searching for transiting habitable super-Earths around nearby M dwarfs
- Physics, GeologyProceedings of the International Astronomical Union
- 2008
Abstract Due to their small radii, M dwarfs are very promising targets to search for transiting super-Earths, with a planet of 2 Earth radii orbiting an M5 dwarf in the habitable zone giving rise to…
Infrared radiation from an extrasolar planet
- Physics, GeologyNature
- 2005
A class of extrasolar giant planets—the so-called ‘hot Jupiters’ (ref. 1)—orbit within 0.05 au of their primary stars (1 au is the Sun–Earth distance). These planets should be hot and so emit…
The presence of methane in the atmosphere of an extrasolar planet
- Physics, GeologyNature
- 2008
A near-infrared transmission spectrum of the planet HD 189733b that shows the presence of methane is reported, and a resolved water vapour band at 1.9 μm confirms the recent claim of water in this object.
SPECTRUM OF A HABITABLE WORLD: EARTHSHINE IN THE NEAR-INFRARED
- Physics, Geology
- 2006
To characterize the spectrum of Earth viewed as an extrasolar planet, we observed the spatially integrated near-infrared (0.7-2.4 μm) reflection spectrum of Earth via the dark side of the Moon…