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* Explore the amount of dust in [[habitable zone]]s
* Explore the amount of dust in [[habitable zone]]s
* Determining if such a disk interferes with future planet finding missions (dust-scattered starlight causes noise in images of exoplanets<ref>
* Determining if such a disk interferes with future planet finding missions (dust-scattered starlight causes noise in images of exoplanets<ref>
{{cite web|title=Future Mission Impacts?|url=http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW_011.html|accessdate=25 February 2012|publisher=[http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW.html EXCEDE Home]}}
{{cite web|title=Future Mission Impacts?|url=http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW_011.html|accessdate=25 February 2012|publisher=[http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW.html EXCEDE Homepage]}}
</ref>)
</ref>)
* Determine composition of material delivered to planets. Icy and organich-rich particles are important for life.<ref>
* Determine composition of material delivered to planets. Icy and organich-rich particles are important for life.<ref>
{{cite web|title=Delivery of Planet Veneers|url=http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW_012.html|accessdate=25 February 2012}}
{{cite web|title=Delivery of Planet Veneers|url=http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW_012.html|accessdate=25 February 2012|publisher=[http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW.html EXCEDE Homepage]}}
</ref>
</ref>
* Determine of fraction of massive planets on large orbits
* Determine of fraction of massive planets on large orbits
* Observe how [[protoplanetary disk]]s make Solar System-like architectures
* Observe how [[protoplanetary disk]]s make Solar System-like architectures
* Constrain [[giant planet]]s' composition by measuring their reflectivity<ref>
* Constrain [[giant planet]]s' composition by measuring their reflectivity<ref>
{{cite web|title=CS Disks: Signposts of Planets|url=http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW_006.html|accessdate=24 February 2012}}
{{cite web|title=CS Disks: Signposts of Planets|url=http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW_006.html|accessdate=24 February 2012|publisher=[http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW.html EXCEDE Homepage]}}
</ref> ''EXCEDE'' will be the first to image (giant) exoplanets distances from their stars similar to ours (0.5-7 [[Astronomical Unit|AU]]).<ref>
</ref> ''EXCEDE'' will be the first to image (giant) exoplanets distances from their stars similar to ours (0.5-7 [[Astronomical Unit|AU]]).<ref>
{{cite web|title=Cool Giant Exoplanets|url=http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW_015.html|accessdate=25 February 2012}}</ref>
{{cite web|title=Cool Giant Exoplanets|url=http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW_015.html|accessdate=25 February 2012|publisher=[http://soweb.as.arizona.edu/~gschneider/EXCEDE_OVERVIEW.html EXCEDE Homepage]}}</ref>


== References ==
== References ==

Revision as of 00:49, 26 February 2012

Template:Infobox Spacecraft

Exoplanetary Circumstellar Environments and Disk Explorer (EXCEDE) is a proposed space telescope for NASA's Explorer program to observe circumstellar protoplanetary and debris discs and study planet formation around nearby (within 100 parsecs) stars of spectral classes M to B. The spacecraft will use a 70 centimeter diameter telescope-mounted coronagraph called PIAA (Phase Induced Amplitude Apodized Coronagraph) to suppress starlight in order to be able to detect fainter radiation of circumstellar dust. Characterizing constitution of such disks would provide clues for planetary formation (mostly in habitable zones), while already existing exoplanets can be detected through their interaction with dust disk. The project's principal investigator is Dr. Glenn Schneider.

Scientific goals

  • Explore the amount of dust in habitable zones
  • Determining if such a disk interferes with future planet finding missions (dust-scattered starlight causes noise in images of exoplanets[1])
  • Determine composition of material delivered to planets. Icy and organich-rich particles are important for life.[2]
  • Determine of fraction of massive planets on large orbits
  • Observe how protoplanetary disks make Solar System-like architectures
  • Constrain giant planets' composition by measuring their reflectivity[3] EXCEDE will be the first to image (giant) exoplanets distances from their stars similar to ours (0.5-7 AU).[4]

References

  1. ^ "Future Mission Impacts?". EXCEDE Homepage. Retrieved 25 February 2012. {{cite web}}: External link in |publisher= (help)
  2. ^ "Delivery of Planet Veneers". EXCEDE Homepage. Retrieved 25 February 2012. {{cite web}}: External link in |publisher= (help)
  3. ^ "CS Disks: Signposts of Planets". EXCEDE Homepage. Retrieved 24 February 2012. {{cite web}}: External link in |publisher= (help)
  4. ^ "Cool Giant Exoplanets". EXCEDE Homepage. Retrieved 25 February 2012. {{cite web}}: External link in |publisher= (help)
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