Results 91 to 100 of about 4,494 (233)

Why HOC[TSUP]+[/TSUP] Is Detectable in Interstellar Clouds: The Rate of the Reaction between HOC[TSUP]+[/TSUP] and H[TINF]2[/TINF] [PDF]

, 1996
Eric Herbst, David E. Woon
openalex   +1 more source

Interstellar clouds containing optically thick H2

The Astrophysical Journal, 1975
The theory of Black and Delgarno that the relative populations of the excited rotational levels of H2 can be understood in terms of cascading following absorption in the Lyman and Werner bands is employed to infer the gas densities and radiation fields within diffuse interstellar clouds containing H2 that is optically thin in those bands.
openaire   +1 more source

Detection of Helium Recombination Lines in the Cygnus X Diffuse Ionized Gas: Implications for Galactic Interstellar Medium Studies

The Astronomical Journal
We present the first detection of helium radio recombination lines (HeRRLs) at 800 MHz from the diffuse ionized gas (DIG) in the Cygnus X region, with an ionized helium-to-hydrogen ratio ( ${{n}}_{{\rm{H}}{\rm{e}}}^{+}/{{n}}_{{\rm{H}}}^{+}$ ) of 0.06 ± 0.
D. Anish Roshi, J. Poojapriyatharsheni, Mayumi Sato, Kimberly L. Emig, Pedro Salas, L. D. Anderson, R. Nimma Elizabeth   +6 more
doaj   +1 more source

Faraday tomography of LoTSS-DR2 data: III. Revealing the Local Bubble and the complex of local interstellar clouds in the high-latitude inner Galaxy [PDF]

A. Erceg, Vibor Jelić, M. Haverkorn, L. Gajović, M. J. Hardcastle, T. W. Shimwell, Cyril Tasse   +6 more
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The Formation of Large Hydrocarbons and Carbon Clusters in Dense Interstellar Clouds [PDF]

, 1997
Ryan P. A. Bettens, Eric Herbst
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A Pan-galaxy Study of Synthetic Giant Molecular Filaments: A Turbulence-dominated Life Cycle

The Astrophysical Journal Supplement Series
Recent surveys of the Galactic plane have revealed dozens of giant molecular filaments (GMFs), with lengths ranging from tens to hundreds of parsecs, yet their origins and life cycles remain debated. In this work, we analyze over 700 GMFs identified from
Zipeng Hu, Ke Wang, Mark R. Krumholz, Keyun Su   +3 more
doaj   +1 more source

Hierarchical Structure and Self-gravity in the Maddalena Giant Molecular Cloud

The Astrophysical Journal
In this work, we present data from the Milky Way Imaging Scroll Painting project for the Maddalena giant molecular cloud (GMC). We decompose the ^13 CO emission datacube of the observed region into hierarchical substructures using a modified dendrogram ...
Renjie Shen, Yuehui Ma, Hongchi Wang, Suziye He, Miaomiao Zhang   +4 more
doaj   +1 more source

Formation of carbonyl sulfide (OCS) via SH radicals in interstellar CO-rich ice under dense cloud conditions [PDF]

Julia C. Santos, H. Linnartz, K.-J. Chuang   +2 more
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Cloud-cloud collisions in the interstellar medium

The Astrophysical Journal, 1980
Results are presented from time-dependent numerical simulations of cloud-cloud collisions in the interstellar medium. Special emphasis is placed on physically detailed models of cloud collisions. The numerical simulations include heating, cooling, thermal conductivity, self-gravity, and molecule formation; magnetic fields have been neglected.
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Structure and Fragmentation Scale of a Massive Star-forming Filament in NGC 6334: High-resolution Mid-infrared Absorption Imaging with JWST

The Astrophysical Journal Letters
Dense filaments are believed to be representative of the initial conditions of star formation in molecular clouds. We have used the MIRI instrument on JWST to image the massive filament NGC 6334M at d  ∼ 1.3 kpc with unprecedented resolution and dynamic ...
Philippe André, Michael Mattern, Doris Arzoumanian, Yoshito Shimajiri, Annie Zavagno, Daisei Abe, Delphine Russeil   +6 more
doaj   +1 more source