Loading...
Please wait, while we are loading the content...
Similar Documents
Observables and goals for coronagraphic characterization of earth analogs
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Stapelfelt, Karl R. |
| Copyright Year | 2012 |
| Description | On a suitably large and stable telescope, direct coronagraphic imaging can make numerous important measurements of terrestrial exoplanets. Astrometric time-series observations will be of primary importance: Only when the planet orbital elements are known can 1) the effects of the planet's illumination phase and asterocentric distance be accounted for in the observed planetary fluxes, and 2) the planet's location relative to the habitable zone be established. Planetary colors and spectra will allow characterization of the planet's atmosphere and possibly even its surface, while time-variable fluxes may indicate surface contrast features or seasonal changes. Imaging will also reveal the context of other planets and dust belts in the system, both of which can affect habitability. Requirements on astrometric precision, number of visits, and telescope aperture will be discussed. |
| File Size | 158407 |
| Page Count | 1 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20120015425 |
| Archival Resource Key | ark:/13960/t8kd6wk1j |
| Language | English |
| Publisher Date | 2012-10-23 |
| Access Restriction | Open |
| Subject Keyword | Astronomy Planetary Atmospheres Characterization Earth Analogs Extrasolar Planets Annual Variations Telescopes Imaging Techniques Coronagraphs Astrometry Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
