Results 51 to 60 of about 219,513 (216)

Simulating molecular cloud regulated star formation in Galaxies [PDF]

open access: yes, 2007
This thesis is primarily concerned with understanding the process of galaxy formation via the simulation of the interstellar medium, star formation and supernova feedback.
Booth, Craig Martin
core  

Masses of interstellar gas clouds

open access: yes, 1983
The equilibrium masses of the interstellar gas clouds have been calculated when the clouds are imbedded with magnetic fields. It is found that the masses of these clouds may be of the order of several thousand solar masses.
V. B. Bhatia
core   +1 more source

The fate of interstellar objects during the collapse of molecular clouds - animations

open access: yes, 2020
Animations of collapsing molecular clouds containing a population of interstellar ...
Pfalzner, Suzanne   +3 more
core   +1 more source

Kinematics of H I Envelopes Associated with Molecular Clouds

open access: yesThe Astronomical Journal
We investigate the evolution of molecular clouds through the kinematics of their atomic hydrogen (H I ) envelopes, using ^12 CO and 21 cm emission to trace the molecular and atomic gas, respectively.
Thummim Mekuria, Nia Imara
doaj   +1 more source

High-resolution Observations of H i in the IC 63 Reflection Nebula

open access: yesThe Astronomical Journal, 2023
Photodissociation regions (PDRs), where the (far-)ultraviolet light from hot young stars interact with the gas in surrounding molecular clouds, provide laboratories for understanding the nature and role of feedback by star formation on the interstellar ...
Lars Bonne   +9 more
doaj   +1 more source

An Instrument for Isomer‐Specific Action Spectroscopy of Charged Clusters: Electronic Spectra of C 14 + and Ca@C 60 +

open access: yesChemistry–Methods, Volume 6, Issue 8, August 2026.
Disentangling spectral congestion of a mixture of isomers in gas‐phase spectroscopy is critical. We present an instrument combining ion mobility, mass spectrometry, and spectroscopy in a cryogenic 3D Paul trap to investigate the isomer‐specific charged clusters and illustrate its performance with the electronic spectra of C14+ and Ca@C60+. Interpreting
Corentin Rossi   +13 more
wiley   +1 more source

Detection of Deuterated Formaldehyde in Interstellar Clouds [PDF]

open access: yesThe Astrophysical Journal, 1979
AbstractDeuterated formaldehyde has been detected for the first time in interstellar clouds; the observed ratio HDCO/H2CO implies formation by gas phase chemistry.
William D. Langer   +3 more
openaire   +1 more source

Investigation into Triggered Star Formation by Radiative Driven Implosion [PDF]

open access: yes, 2016
When massive stars form, they emit strong, hydrogen ionising radiation fields into their molecular cloud environment, forming HII regions. This is believed to be capable of inducing effects which can trigger further star formation through a process known
Kinnear, Timothy Michael
core  

Hierarchical Dynamics within Molecular Clouds: Type 4 Scaling Relations of Molecular Clouds in the Second Galactic Quadrant

open access: yesThe Astrophysical Journal
We present a statistical study of the hierarchical structure of molecular clouds in the second quadrant of the Galactic midplane ( $139\mathop{.}\limits^{^\circ }75\,\leqslant \,l\,\leqslant \,159\mathop{.}\limits^{^\circ }75$ , $-5\mathop{.}\limits ...
Suziye He   +6 more
doaj   +1 more source

Jovian Auroral Proton Precipitation

open access: yesJournal of Geophysical Research: Space Physics, Volume 131, Issue 8, August 2026.
Abstract The total power of the Jovian aurora is about 1013–1014 W with ultraviolet emission observed in the Lyman and Werner bands of molecular hydrogen. X‐ray, radio, and infrared emissions have also been observed. The Jovian Auroral Distributions Experiment and the Jovian Energetic Particle Detector Instrument onboard the Juno spacecraft, orbiting ...
S. J. Houston   +4 more
wiley   +1 more source

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