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Scientific paper
Dec 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...209.1008b&link_type=abstract
2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #10.08; Bulletin of the American Astronomical Society, V
Other
Scientific paper
In November 2006 we have 85 hours of observing time in order to conduct a survey for mid-infrared rotational H2 emission in disk sources using TEXES, the Texas Echelon-cross-Echelle Spectrograph (Lacy et al. 2002) on Gemini-North. TEXES is a high spectral resolution, mid-infrared spectrograph available to the astronomical community on both the NASA IRTF and Gemini-North telescopes. We will observe each target at both the J=3-1 (17.035 microns) and J=4-2 (12.279 microns) settings. Sources with a detection at either setting will be followed up with observations at the J=6-4 (8.026 microns) setting to constrain the gas temperature. Flux ratios of the three lines are sensitive to gas temperatures between 200 and 800 K. Even non-detections will provide limits on the amount of warm gas in regions where the dust is optically thin. The high spectral resolution available with TEXES coupled with knowledge of the disk inclination by other means allows us to determine the radial location of the emitting gas.
Observations with TEXES are supported by NSF grant AST-0607312.
Bitner Martin
Blake Geoffrey A.
Carr John S.
Currie Thayne
Gorti Uma
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