van Loon, Jacco Th; Smith, Keith T; McDonald, I; Sarre, Peter J; Fossey, Stephen J; Sharp, Robert
The multiphase interstellar medium (ISM) is highly structured, on scales from the size of the Solar System to that of a galaxy. In particular, small-scale structures are difficult to study and hence are poorly understood. We used the multiplex capabilities of the AAOmega spectrograph at the Anglo-Australian Telescope to create a half-square-degree map of the neutral and low-ionized ISM in front of the nearby (∼5 kpc), most massive Galactic globular cluster, ω Centauri. Its redshifted,...[Show more]
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