NASA NTRS · 20210001045
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Cohen, E. A., Chen, P., Drouin, B. J., Pickett, H. M., Pearson, J. C.. 2002-05-01. Microwave, millimeter, submillimeter and far infrared spectral databases. https://ntrs.nasa.gov/citations/20210001045
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The contamination control activity performed for the Multi-Angle Imaging Spectro-Radiometer (MISR) consisted of an overall system analysis for susceptibility to molecular and particulate contamination from both internal and external sources at the most sensitive sensor wavelength.
We present a series of molecular hydrogen images of the Herbig-Haro 1-2 system in the 1-0 S(1) transition at 2.121 microns, with a spatial resolution of ~2 inches. The distribution of H 2 is then compared with that of the excitation, given by the [S II] 6717+6731 to H-alpha line ratio. We find that most optical condensations in the HH 1-2 system, including the VLA 1 jet, have H 2 counterparts. H 2 emission is detected in most low excitation knots, as expected for low velocity shocks (50 km s sup-1 <), but also in high excitation regions, like in HH 1F and HH 2A'.