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Paper: Mapping Observations of the Horsehead Nebula and the NGC 2023 Region in the NH3 (1,1),(2,2) and (3,3) Lines with the Nobeyama 45 m Telescope
Volume: 476, New Trends in Radio Astronomy in the ALMA Era
Page: 345
Authors: Ohashi, S.; Kitamura, Y.; Akashi, T.
Abstract: We performed mapping observations of the Horsehead Nebula and the NGC 2023 region in the NH3 (1,1), (2,2) and (3,3) lines. We identified five dense cores (Cores A to E), and estimated the masses and kinetic temperatures of the cores by analyzing the NH3 lines. For all the cores, the temperature tends to increase in the outer parts, suggesting heating due to the ionized gas from IC 434. Core B is discovered by this work and indicates a sign of infalling motion.
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