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 1, 2013

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

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

Pub Type

Journals

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Keywords

interstellar molecule, ion, molecular clouds, radio astronomy, spectral analysis, surveys

Citation

Lovas, F. , McGuire, B. , Carroll, P. , Loomis, R. , Blake, G. , Hollis, J. , Jewell, P. and Remijan, A. (2013), 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, Astrophysical Journal Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=913359 (Accessed October 10, 2025)