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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 7.

Top to bottom: channel-wise column density profile (dN/dυ) of C+, O, p-H2O+, OH+, CH, OH, and SH for the foreground absorbing clouds along the line of sight toward W3(OH). The blue shaded region represents the uncertainties (2σ confidence interval), while the gray dashed line and shaded region mark the systemic velocity of the source and highlight the velocity dispersion of the source, respectively.

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