Results 41 to 50 of about 105,573 (267)
ChemPhysChem, Volume 26, Issue 6, March 15, 2025.The ionization of anthracene, acridine, and phenazine has been explored, along with the removal of one and two hydrogen atoms, to provide valuable information for astrochemists and to understand the behavior of the resulting structures and their electronic reorganization. Abstract In this study, we systematically explored the stability and isomerism of
Khaldia Zghida +3 more
wiley +1 more source
OO Leo: An Active Contact Binary with Possible Solar-like Differential Rotation
The Astrophysical JournalWith Transiting Exoplanet Survey Satellite (TESS) high-precision photometry and Large Sky Area Multi-object Fiber Spectroscopic Telescope medium-resolution spectra, we present the first light and radial velocity curve analyses for the eclipsing binary OO
Zi-Bin Meng +4 more
doaj +1 more source
Theory of interstellar medium diagnostics [PDF]
, 1983 The theoretical interpretation of observed interplanetary resonance luminescence patterns is used as one of the must promising methods to determine the state of the local interstellar medium (LISM).
Fahr, H. J.
core +1 more source
Astrophysical Fractals: Interstellar Medium and Galaxies
, 1999 The interstellar medium is structured as a hierachy of gas clouds, that looks self-similar over 6 orders of magnitude in scales and 9 in masses. This is one of the more extended fractal in the Universe.
Combes, F.
core +2 more sources
Energy Landscapes in Chemical Reactions and Transport
ChemPhysChem, Volume 26, Issue 6, March 15, 2025.Kinetics/dynamics of chemical reactivity and transport of chemical species in a solid are both determined by the energy landscape in which they take place. Discussing common grounds but also distinct differences may help in advancing the understanding in both fields.
Karl‐Michael Weitzel
wiley +1 more source
Models of the Interstellar Medium [PDF]
Highlights of Astronomy, 1980 AbstractUp-to-date models of the interstellar medium should account for the existence of at least three phases of the interstellar gas, a hot phase at ˜ 106 K (HICM), a warm phase at ˜ 104 K (WICM) and a cold phase at ≤ 102 K (clouds). Recent observations of interstellar absorption lines are used to derive information about the physical properties and ...
openaire +1 more source
Deuterium enrichment of the interstellar medium [PDF]
New Astronomy, 2015 Despite low elemental abundance of atomic deuterium in interstellar medium (ISM), observational evidences suggest that several species in gas-phase and in ices could be heavily fractionated. We explore various aspects of deuterium enrichment by constructing a chemical evolution model in gas and grain phases.
Sandip K. Chakrabarti +4 more
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Quenching and Recovery of Persistent X-Ray Emission during a Superburst in 4U 1820–30
The Astrophysical JournalWe report the superburst from 4U 1820–30 in 2021 observed by the Monitor of All-sky X-ray Image and Neutron star Interior Composition Explorer (NICER).
Zhijiao Peng +8 more
doaj +1 more source
Revisiting CN− Formation Mechanisms in Electron Collisions with Benzonitrile
ChemPhysChem, EarlyView.This study explores negative ion formation via electron attachment, revealing CN− formation at 3.0 and 7–10 eV. Dissociation pathways are analyzed using G4(MP2) and CASPT2 calculations, highlighting the coupling between the π4* and σ* resonances critical for interstellar chemistry. Radiation‐induced processes in the aromatic cyano compound benzonitrile
Rodrigo Rodrigues +8 more
wiley +1 more source
Turbulence in the molecular interstellar medium [PDF]
Proceedings of the International Astronomical Union, 2006 AbstractThe observational record of turbulence within the molecular gas phase of the interstellar medium is summarized. We briefly review the analysis methods used to recover the velocity structure function from spectroscopic imaging and the application of these tools on sets of cloud data.
Christopher M. Brunt, Mark H. Heyer
openaire +3 more sources