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Nature 434, 707-708 (7 April 2005) | doi:10.1038/434707a; Published online 6 April 2005
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International PhD Programme
- MRC Laboratory of Molecular Biology
- Cambridge, UK
Assistant Professor
- University of Texas
- Austin TX United States
Planetary science : A planet that blinks
Karl Stapelfeldt1
Abstract
Infrared radiation from two extrasolar planets has been measured from the dip in total light as the planets pass behind their parent stars — a milestone on the road to the direct imaging of such planets.
Detecting light from planets orbiting stars other than the Sun is one of the most challenging tasks in observational astronomy: a trickle of planetary photons must somehow be separated from the flood of light emitted by the planet's parent star. The classic approach is to employ one or more large telescopes, suppress the stellar glare as much as possible by means of coronagraphic masks or destructive interference, and extract the planetary signal from the residual starlight.
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Karl Stapelfeldt is in the Astrophysics Element, Earth and Space Sciences Division, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, California
91109, USA.
e-mail: Email: krs@exoplanet.jpl.nasa.gov
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