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Ubiquitous velocity fluctuations throughout the molecular interstellar medium

Henning, Thomas; Henshaw, Jonathan D.; Kruijssen, J. M. Diederik +23 more

The density structure of the interstellar medium determines where stars form and release energy, momentum and heavy elements, driving galaxy evolution^1-4. Density variations are seeded and amplified by gas motion, but the exact nature of this motion is unknown across spatial scales and galactic environments⁵. Although dense s…

Infalling gas in a Lyman-α blob

Kohno, Kotaro; Lehnert, Matthew D.; Menten, Karl M. +11 more

Lyman-α blobs (LABs) are spatially extended nebulae of emission in the Lyman-α (Lyα) line of hydrogen, seen at high redshifts^1,2, and most commonly found in the dense environment of star-forming galaxies^3,4. A recent study showed that nearly 100% of the sky is covered by Lyα emission around high-redshift galaxies^5-7