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Fully Sampled Maps of Ices and Silicates in Front of Cepheus A East with theSpitzer Space Telescope
We report the first fully sampled maps of the distribution of interstellar CO2 ices, H2O ices and total hydrogen nuclei, as inferred from the 9.7 micron silicate feature, toward the star-forming region Cepheus A East with the IRS instrument onboard the Spitzer Space Telescope. We find that the column density distributions for these solid state features all peak at, and are distributed around, the location of HW2, the protostar believed to power one of the outflows observed in this star-formingdoi:10.1086/523790 fatcat:mhhaci7mp5gjlgyrhfjrbhmc4m