3 papers
astro-ph.GA2026
Constraints on the properties of warm ionized gas from low-frequency hydrogen radio recombination lines
Pedro Salas, Kimberly L. Emig, Matteo Luisi +2
The ionized gas in the Milky Way is a major component of the interstellar medium. Observations of extinction free tracers, such as hydrogen radio recombination lines (HRRLs), have…
astro-ph.GA2025
Cool dark gas in Cygnus X: The first large-scale mapping of low-frequency carbon recombination lines
Kimberly L. Emig, Pedro Salas, Loren D. Anderson +14
Understanding the transition from atomic gas to molecular gas is critical to explain the formation and evolution of molecular clouds. However, the gas phases involved, cold HI and…
astro-ph.GA2025
Expansion Signatures in 35 HII Regions traced by SOFIA [CII] Emission
Timothy Faerber, Loren D. Anderson, Matteo Luisi +6
We analyze the expansion signatures of 35 HII regions mapped in [CII] 158 micron emission by the Stratospheric Observatory for Infrared Astronomy (SOFIA). The [CII] emission primar…