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HyGAL: Characterizing the Galactic Interstellar Medium with Observations of Hydrides and Other Small Molecules. I. Survey Description and a First Look Toward W3(OH), W3 IRS5, and NGC 7538 IRS1

  • Authors: A. M. Jacob, D. A. Neufeld, P. Schilke, H. Wiesemeyer, W.-J. Kim, S. Bialy, M. Busch, D. Elia, E. Falgarone, M. Gerin, B. Godard, R. Higgins, P. Hennebelle, N. Indriolo, D. C. Lis, K. M. Menten, A. Sanchez-Monge, T. Möller, V. Ossenkopf-Okada, M. R. Rugel, D. Seifried, P. Sonnentrucker, S. Walch, M. G. Wolfire, F. Wyrowski, V. Valdivia

A. M. Jacob et al 2022 The Astrophysical Journal 930 .

  • Provider: AAS Journals

Caption: Figure 17.

12C/13C isotopic abundance ratio as a function of Galactocentric distance, R GAL (kpc) adapted from Jacob et al. (2020a). The teal star represents the 12C/13C ratio obtained using C+ (this paper). The black solid line represents the weighted fit to the data except that from this work with the gray shaded region demarcating the 1σ interval of this fit.

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