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arXiv · 1804.06908

The Connection Between Different Tracers Of The Diffuse Interstellar Medium: Kinematics

Johnathan S. Rice·S. R. Federman·Nicolas Flagey·Paul F. Goldsmith·William D. Langer·Jorge L. Pineda·D. L. Lambert
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Abstract

Using visible, radio, microwave, and sub-mm data, we study several lines of sight toward stars generally closer than 1 kpc on a component-by-component basis. We derive the component structure seen in absorption at visible wavelengths from Ca II, Ca I, K I, CH, CH$^{+}\!,$ and CN and compare it to emission from H I, CO and its isotopologues, and C$^{+}$ from the GOT C+ survey. The correspondence between components in emission and absorption help create a more unified picture of diffuse atomic and molecular gas in the interstellar medium. We also discuss how these tracers are related to the CO-dark H$_{2}$ gas probed by C$^{+}$ emission and discuss the kinematic connections among the species observed.

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Johnathan S. Rice, S. R. Federman, Nicolas Flagey, Paul F. Goldsmith, William D. Langer, Jorge L. Pineda, D. L. Lambert. 2018-04-18. The Connection Between Different Tracers Of The Diffuse Interstellar Medium: Kinematics. https://doi.org/10.3847/1538-4357%2Faabae7

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