A spectrum of an extrasolar planet
@article{Richardson2007ASO, title={A spectrum of an extrasolar planet}, author={Lee Jeremy Richardson and Drake L. Deming and Karen Horning and Sara Seager and Joseph Harrington}, journal={Nature}, year={2007}, volume={445}, pages={892-895} }
Of the over 200 known extrasolar planets, 14 exhibit transits in front of their parent stars as seen from Earth. Spectroscopic observations of the transiting planets can probe the physical conditions of their atmospheres. One such technique can be used to derive the planetary spectrum by subtracting the stellar spectrum measured during eclipse (planet hidden behind star) from the combined-light spectrum measured outside eclipse (star + planet). Although several attempts have been made from…
195 Citations
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References
SHOWING 1-10 OF 33 REFERENCES
Detection of Thermal Emission from an Extrasolar Planet
- Physics, Geology
- 2005
We present Spitzer Space Telescope infrared photometric time series of the transiting extrasolar planet system TrES-1. The data span a predicted time of secondary eclipse, corresponding to the…
Theoretical Spectra and Atmospheres of Extrasolar Giant Planets
- Physics, Geology
- 2003
We present a comprehensive theory of the spectra and atmospheres of irradiated extrasolar giant planets. We explore the dependences on stellar type, orbital distance, cloud characteristics, planet…
Detection of an Extrasolar Planet Atmosphere
- Physics, Geology
- 2001
We report high-precision spectrophotometric observations of four planetary transits of HD 209458, in the region of the sodium resonance doublet at 589.3 nm. We find that the photometric dimming…
Atmospheres of Extrasolar Giant Planets
- Physics, Geology
- 2006
The next decade will almost certainly see the direct imaging of extrasolar giant planets around nearby stars. Unlike purely radial velocity detections, direct imaging will open the door to…
A reappraisal of the habitability of planets around M dwarf stars.
- Physics, GeologyAstrobiology
- 2007
It is concluded that M dwarf stars may indeed be viable hosts for planets on which the origin and evolution of life can occur and it makes sense to include M dwarfs in programs that seek to find habitable worlds and evidence of life.
Infrared Observations during the Secondary Eclipse of HD 209458b. II. Strong Limits on the Infrared Spectrum Near 2.2 μm
- Physics, Geology
- 2003
We report observations of the transiting extrasolar planet, HD 209458b, designed to detect the secondary eclipse. We employ the method of occultation spectroscopy, which searches in combined light…
An extended upper atmosphere around the extrasolar planet HD209458b
- Physics, GeologyNature
- 2003
The detection of atomic hydrogen absorption in the stellar Lyman α line during three transits of HD209458b is reported, showing that this absorption should take place beyond the Roche limit and therefore can be understood in terms of escaping hydrogen atoms.
PHOTOMETRIC LIGHT CURVES AND POLARIZATION OF CLOSE-IN EXTRASOLAR GIANT PLANETS
- Physics, Geology
The close-in extrasolar giant planets (CEGPs), AU from their parent stars, may have a large [0.05 component of optically reÑected light. We present theoretical optical photometric light curves and…
Strong infrared emission from the extrasolar planet HD 189733b
- Physics, Geology
- 2006
We report detection of strong infrared thermal emission from the nearby (d = 19 pc) transiting extrasolar planet HD 189733b by measuring the flux decrement during its prominent secondary eclipse. A 6…
Atmosphere, Interior, and Evolution of the Metal-rich Transiting Planet HD 149026b
- Physics, Geology
- 2006
We investigate the atmosphere and interior of the new transiting planet HD 149026b, which appears to be very rich in heavy elements. We first compute model atmospheres at metallicities ranging from…