3 papers
astro-ph.GA2020
Tracers of the ionization fraction in dense and translucent gas: I. Automated exploitation of massive astrochemical model grids
Emeric Bron, Evelyne Roueff, Maryvonne Gerin +21
The ionization fraction plays a key role in the physics and chemistry of the neutral interstellar medium, from controlling the coupling of the gas to the magnetic field to allowing…
astro-ph.GA2018
H2CO ortho-to-para ratio in the protoplanetary disk HD 163296
V. V. Guzman, K. I. Oberg, J. Carpenter +3
Ortho-to-para (o/p) ratios of species like water, ammonia and formaldehyde (H2CO) are believed to encode information about the formation history of the molecule. Measurements of o/…
astro-ph.EP2018
A gap in the planetesimal disc around HD 107146 and asymmetric warm dust emission revealed by ALMA
S. Marino, J. Carpenter, M. C. Wyatt +9
While detecting low mass exoplanets at tens of au is beyond current instrumentation, debris discs provide a unique opportunity to study the outer regions of planetary systems. Here…