Computer Science – Performance
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21345104g&link_type=abstract
American Astronomical Society, AAS Meeting #213, #451.04; Bulletin of the American Astronomical Society, Vol. 41, p.344
Computer Science
Performance
Scientific paper
The Pupil-mapping Exoplanet Coronagraphic Observer (PECO) mission concept has a 1.4-m coronagraphic telescope with a high performance Phase-Induced Amplitude Apodization (PIAA) coronagraph. PECO can detect small (1 - 2 Earth radius) and giant planets as well as circumstellar disks with high spatial resolution ( 100 mas) and high contrast ( 1E-10) as close as 2 lambda / D (less than 200 mas) from host stars. PECO will produce images in approximately 15 filter bands over the 400 - 800 nm wavelength range which will be combined to produce low resolution spectra and spectral energy distributions of its targets.
PECO will be able to detect small planets with Earth albedos in the habitable zones of several dozen nearby FGK stars using integration times of under 1 day each. Giant planets will be observable around several hundred stars in similar integration times, including several known radial velocity planets. PECO filters are optimized for detecting spectral features in these planets, and we present simulations of PECO low resolution spectra. Circumstellar disks with less mass than our own zodiacal dust cloud will be detectable around hundreds of stars. PECO will be able to see such dusty disks to within 1 AU of stars out to 6 pc and will have spatial resolution of better than 1 AU for stars out to 10 pc. The PECO baseline mission will survey several dozen nearby stars for terrestrial planets with high completeness, and PECO will also make individual observations of a few hundred stars for giant planets over its 3 year lifetime. A subset of detected planets will be observed multiple times and at high signal to noise to characterize their spectra, constraining their temperatures and orbits. These same observations will be used for detecting and characterizing tenuous circumstellar material.
Cahoy Kerri
Greene Thomas P.
Guyon Olivier
Kasting James
Marley Mark
No associations
LandOfFree
Science Performance of the Pupil-mapping Exoplanet Coronagraphic Observer (PECO) does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Science Performance of the Pupil-mapping Exoplanet Coronagraphic Observer (PECO), we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Science Performance of the Pupil-mapping Exoplanet Coronagraphic Observer (PECO) will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1705056