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News Release Archive:

News Release 141 of 948

October 6, 2011 09:00 AM (EDT)

News Release Number: STScI-2011-29

Astronomers Find Elusive Planets in Decade-Old Hubble Data

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Image: Positional Schmatic of the Members of the HR 8799 Exoplanet System

Positional Schmatic of the Members of the HR 8799 Exoplanet System

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ABOUT THIS IMAGE:

This is an illustration of the HR 8799 exoplanet system based on the reanalysis of Hubble NICMOS data and ground-based observations. The positions of the star and the orbits of the four known planets are shown schematically. The sizes of the dots are not to scale with the planet's true sizes. The three outermost planets, b, c, and d, are detected in both the NICMOS and ground-based data. A fourth, inner planet, e, was detected in ground-based observations. The orbits appear elongated because of a slight tilt of the plane of the orbits relative to our line of sight. The size of the HR 8799 planetary system is comparable to our solar system, as indicated by the orbit of Neptune, shown to scale.

Image Type: Illustration

Credit: NASA, ESA, and R. Soummer (STScI)

NEWS RELEASE IMAGES

The above image is part of a montage:

Montage Image: HR 8799 Exoplanet System Image Type: Astronomical/Illustration/Annotated HR 8799 Exoplanet SystemPRC2011-29 NICMOS Image of HR 8799 Planetary System Image Type: Astronomical NICMOS Image of HR 8799 Planetary System Software-Processed NICMOS Image of HR 8799 Planetary System Image Type: Astronomical/Data Software-Processed NICMOS Image of HR 8799 Planetary System

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