Computer Science – Performance
Scientific paper
Dec 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21113404g&link_type=abstract
American Astronomical Society, AAS Meeting #211, #134.04; Bulletin of the American Astronomical Society, Vol. 39, p.968
Computer Science
Performance
Scientific paper
There are many architectures being proposed for direct imaging of planets around other stars. To compare the performance of these systems, we need a consistent metric to quantify whether and how well a given planet or range of planets can be observed. This is also critical for deriving a specific mission design for a given architecture.
In this paper, we look at this issue in the context of the New Worlds Observer (NWO) architecture. We develop a metric for how well a given planet can be seen by a given system. We then apply this metric to a range of NWO systems and explore how this affects the mission design. We find that the central starlight suppression and the geometrical Inner Working Angle (IWA) are not good ways to describe an external occulter system's ability to detect an exo-planet. Instead, for a given mission design, there will be a range of IWA depending on the relationship between the planet brightness and the suppression provided by the starshade. We explore this relationship and discuss its implications for the design of an NWO mission.
Glassman Tiffany Michelle
Lo Amy
Polidan Ron
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