Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997aas...191.0905r&link_type=abstract
American Astronomical Society, 191st AAS Meeting, #09.05; Bulletin of the American Astronomical Society, Vol. 29, p.1223
Astronomy and Astrophysics
Astronomy
Scientific paper
SOFIA will provide a unique opportunity for spectroscopy in the mid-infrared. In particular, SOFIA will allow high spectral & high spatial resolution investigations of molecules that are blocked by the Earth's atmosphere. To take advantage of this opportunity, we are building the Echelon X Echelle Spectrograph (EXES), a PI class spectrograph operating from 5.5 to 28.5 microns. The two most important molecules are water vapor and molecular hydrogen which will be probes of star forming regions, protoplanetary disks, interstellar shocks, circumstellar shells and planetary atmospheres. High spectral resolution (R - 100,000) will give optimum sensitivity to cold interstellar gas and provide access to information in spectral line profiles. No current or planned spaceborne instrument will have this capability. In addition to the cross-dispersed high resolution mode, EXES can operate as a long-slit spectrograph at R - 10,000 and R - 1500. These resolving powers can address a broad range of Galactic, Extragalactic, and planetary problems.
Hemenway Mary Kay M.
Jaffe Daniel T.
Lacy John H.
Richter Matthew Joseph
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