Atomistic Modeling of Methyl Formate and Glycolaldehyde Formation on Interstellar Dirty Ice Mantles via a "Radical + Ice" Mechanism. [PDF]
ChempluschemThe presence of interstellar complex organic molecules (COMs) has been baffling astrochemists for a long time. Methyl formate and glycolaldehyde are widely detected but their abundances mismatch kinetic astrochemical model predictions. Here, the formation of these two COMs is characterized onto a mixed ice surface, highlighting the importance of ...
Perrero J +3 more
europepmc +2 more sources
High‐Pressure Carbonaceous Phases as Minerals
Geophysical Monograph Series, Page 11-23., 2020 This book is Open Access. A digital copy can be downloaded for free from Wiley Online Library.
Explores the behavior of carbon in minerals, melts, and fluids under extreme conditions
Carbon trapped in diamonds and carbonate-bearing rocks in subduction zones are examples of the continuing exchange of substantial carbon ...
Oliver Tschauner
wiley +1 more source
Ubiquitous argonium (ArH+) in the diffuse interstellar medium: A molecular tracer of almost purely atomic gas [PDF]
Astronomy & Astrophysics, 2014 We describe the assignment of a previously unidentified interstellar absorption line to ArH$^+$ and discuss its relevance in the context of hydride absorption in diffuse gas with a low H$_2$ fraction. The column densities along several lines of sight are determined and discussd in the framework of chemical models.
Schilke, P. +16 more
openaire +4 more sources
The Astrophysical Journal Letters, 2023 JWST observations of polycyclic aromatic hydrocarbon (PAH) emission provide some of the deepest and highest resolution views of the cold interstellar medium (ISM) in nearby galaxies.
Karin M. Sandstrom +45 more
doaj +1 more source
The structure of the thermally bistable and turbulent atomic gas in the local interstellar medium [PDF]
Astronomy & Astrophysics, 2014 21 pages, 24 ...
Saury, E. +4 more
openaire +4 more sources
Star Formation in Atomic Gas [PDF]
, 2012 Observations of nearby galaxies have firmly established, over a broad range of galactic environments and metallicities, that star formation occurs exclusively in the molecular phase of the interstellar medium (ISM).
Abdo +37 more
core +2 more sources
VERTICO and IllustrisTNG: The Spatially Resolved Effects of Environment on Galactic Gas
The Astrophysical Journal Letters, 2023 It has been shown in previous publications that the TNG100 simulation quantitatively reproduces the observed reduction in each of the total atomic and total molecular hydrogen gas for galaxies within massive halos, i.e., dense environments.
Adam R. H. Stevens +17 more
doaj +1 more source
Atomic and molecular gas in interstellar cirrus clouds
The Astrophysical Journal, 1994 The dust, atomic gas, and molecular gas content of a sample of 26 of isolated, degree-sized infrared clouds are compared. Half of the clouds have an infrared excess indicating the presence of H2, and 14 contain compact CO-emitting regions. Complete, high angular resolution H I and CO maps of one cloud, G236+39, resolve the transition between atomic and
William T. Reach +2 more
openaire +1 more source
How to search for mirror stars with Gaia
Journal of High Energy Physics, 2022 We show for the first time how to conduct a direct search for dark matter using Gaia observations. Its public astrometric data may contain the signals of mirror stars, exotic compact objects made of atomic dark matter with a tiny kinetic mixing between ...
Aaron Howe +3 more
doaj +1 more source
On the structure of the turbulent interstellar atomic hydrogen [PDF]
Astronomy & Astrophysics, 2007 Aims. It is necessary to understand the dynamics of atomic gas to use complex modeling and to carry out detailed comparisons between theoretical models and observations. Methods. In a companion paper, we present high resolution bidimensional numerical simulations of the interstellar atomic hydrogen.
Hennebelle, Patrick +2 more
openaire +2 more sources