Results 21 to 30 of about 1,184 (154)

On the structure of the interstellar atomic gas

open access: yes, 2007
to be published in the proceedings of the meeting on "Small Ionized and Neutral Structures in the Diffuse Interstellar Medium" (ASP Conference Series)
Hennebelle, P., Audit, E.
openaire   +2 more sources

H i Self-absorption toward the Cygnus X North: From Atomic Filament to Molecular Filament

open access: yesThe Astrophysical Journal Letters, 2023
Using the H i self-absorption data from the Five-hundred-meter Aperture Spherical radio Telescope, we perform a study of the cold atomic gas in the Cygnus X North region.
Chong Li   +7 more
doaj   +1 more source

Evidence for the Heating of Atomic Interstellar Gas by PAHs

open access: yes, 2000
We report a strong correlation between the [CII] 158 micron cooling line and the mid-infrared flux in the 5-10 micron range in a wide variety of star-forming galaxies. The mid-infrared flux is dominated by Aromatic Feature Emission (AFE), which is thought to arise from large polycyclic aromatic hydrocarbon molecules or `PAHs' and generally associated ...
Helou, George   +4 more
openaire   +2 more sources

ASTROCHEMISTRY OF STAR FORMATION

open access: yesOdessa Astronomical Publications, 2013
Star formation is one of the key pro­cesses governing the evolution of the Universe. It is ac­companied by significant transformations in the chem­ical composition and the physical state of the inter­stellar medium. Combining observations in infrared and
D. S. Wiebe, O. V. Kochina
doaj   +1 more source

[C ii] Spectral Mapping of the Galactic Wind and Starbursting Disk of M82 with SOFIA

open access: yesThe Astrophysical Journal, 2023
M82 is an archetypal starburst galaxy in the local Universe. The central burst of star formation, thought to be triggered by M82's interaction with other members in the M81 group, is driving a multiphase galaxy-scale wind away from the plane of the disk ...
Rebecca C. Levy   +12 more
doaj   +1 more source

The PhotoDissociation Region Toolbox: Software and Models for Astrophysical Analysis

open access: yesThe Astronomical Journal, 2022
The PhotoDissociation Region Toolbox provides comprehensive, easy-to-use, public software tools and models that enable an understanding of the interaction of the light of young, luminous, massive stars with the gas and dust in the Milky Way and in other ...
Marc W. Pound, Mark G. Wolfire
doaj   +1 more source

Enantioselective Synthesis of a New Class of Stable and Functionalized Cyclopentadienes via CuH‐Catalysis

open access: yesAngewandte Chemie, Volume 138, Issue 32, 3 August 2026.
Cyclopentadienes (CpHs) are fundamental building blocks with widespread applications in chemistry. However, their inherent acidity and isomeric instability have long limited access to chiral variants in an asymmetric fashion. Here, we introduce a CuH‐catalyzed asymmetric transformation that provides an unprecedented entry into a new class of ...
Piero Soppelsa   +4 more
wiley   +2 more sources

Interstellar X-Ray Absorption and Scattering

open access: yesThe Astrophysical Journal
Accurate estimates of the absorption of X-rays by interstellar gas and dust are of crucial importance for the analysis and interpretation of almost all astronomical soft X-ray observations.
Linli Yan, Aigen Li, Fangjun Lu
doaj   +1 more source

Relative In-flight Response of IBEX-Lo to Interstellar Neutral Helium Atoms

open access: yesThe Astrophysical Journal Supplement Series, 2023
The IBEX-Lo instrument on the Interstellar Boundary Explorer (IBEX) mission measures interstellar neutral (ISN) helium atoms. The detection of helium atoms is made through negative hydrogen (H ^− ) ions sputtered by helium atoms from the IBEX-Lo’s ...
P. Swaczyna   +9 more
doaj   +1 more source

Clathrate hydrate crystallization

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Clathrate hydrate crystallization has been an area of interest to chemical engineers from the point of view of crystal structure, thermophysical properties, phase equilibria, kinetics, industrial applications, and environmental (climate change) implications.
Peter Englezos
wiley   +1 more source

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