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Publication Citation: Detection of l-C3H+ in Sgr B2(N) and Sgr B2(OH) and Refinement of its Spectroscopic Constants via the Publicly Available PRIMOS Survey and the Barry E. Turner Legacy Survey

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Author(s): Francis J. Lovas; Brett A. McGuire; P. B. Carroll; Ryan A. Loomis; Geoffery A. Blake; Jan M. Hollis; Phillip R. Jewell; Anthony J. Remijan;
Title: Detection of l-C3H+ in Sgr B2(N) and Sgr B2(OH) and Refinement of its Spectroscopic Constants via the Publicly Available PRIMOS Survey and the Barry E. Turner Legacy Survey
Published: September 01, 2013
Abstract: Pety et al. (2012) recently reported the detection and assignment of l-C3H+ in the Horsehead nebula. Here, we expand that analysis to include the J = 1 - 0 and J = 2 - 1 transitions of l-C3H+ observed in absorption towards Sgr B2(N) in data from the publicly available PRIMOS survey. Also presented here are observations of the J = 6 - 5 and J = 7 - 6 transitions in emission towards Sgr B2(N) and Sgr B2(OH)using the Barry E. Turner Legacy Survey. We calculate an excitation temperature and column density of l-C3H+ of 10.1 K and 1.7 x 10**13 cm**-2 in Sgr B2(N) and 79.3 K and 1.5 x 10**13 cm**-2 in Sgr B2(OH). We discuss the implications of these results and highlight the utility of publicly available line surveys in community-driven analyses.
Citation: Astrophysical Journal Letters
Keywords: interstellar molecule; ion; molecular clouds; radio astronomy; spectral analysis; surveys
Research Areas: Physics, Molecular Physics
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