Other
Scientific paper
Jan 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21331004h&link_type=abstract
American Astronomical Society, AAS Meeting #213, #310.04; Bulletin of the American Astronomical Society, Vol. 41, p.285
Other
Scientific paper
Characterization of the debris disks around nearby stars is an important complement to planet finding. For the ultimate goal of detecting and characterizing an extrasolar Earth-like planet, debris disks can decrease the significance of the detection and potentially obscure the planet signal altogether. The detection of debris material, especially in, or close to, the habitable zone is also a direct indication of planet building material in this zone. In a gas-poor disk, debris material is cleared away on relatively short timescales compared to those of planet formation or the planetary system itself. Therefore, the presence of dust indicates that larger parent bodies must also be located in the system. In fact, information gleaned from disk structure can even be used to detect planets that would otherwise be too faint or have a mass that is too low to be detected using other techniques. Based on discussion in the May 2008 Exoplanet Forum, a set of four consensus recommendations were developed related to the characterization exozodiacal dust: 1) NASA should continue support of efforts that will measure zodiacal dust density and morphology, critical for planning future direct imaging missions. 2) Studies of Exoplanet Probe class space missions should be pursued that can address the density and morphology of dust in the habitable zone of nearby stars with a much higher sensitivity limit and a much larger sample of nearby systems than can be done with ground-based technologies. 3) The development of collisional debris disk models are critical to complement observations, and aid in interpretation and extrapolation of such results.
Exoplanet Forum 2008 Exozodiacal Disk Characterization Group
Hinz Philip
Millan-Gabet Rafael
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