Results 51 to 60 of about 4,624,977 (307)

Magnetic Fields in the Eos Cloud: Dynamically Important Fields in the Interface between Atomic and Molecular Gas

open access: yesThe Astrophysical Journal
The recently discovered Eos molecular cloud is a CO-dark, low-density cloud located at a distance of approximately 94 pc from the Sun which does not appear to have formed stars at any point in its history.
Janik Karoly   +5 more
doaj   +1 more source

Molecular cloud dispersal traced by the ionized carbon 158 μm line

open access: yesAstronomy & Astrophysics
Feedback from massive stars in the form of radiation and winds impacts the associated host molecular cloud. Not only can feedback compress gas and trigger the formation of dense cores that eventually collapse into new stars, it can also disperse cloud ...
Bonne L.   +16 more
doaj   +1 more source

Filaments in the Lupus molecular clouds [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
We have studied the filaments extracted from the column density maps of the nearby Lupus 1, 3, and 4 molecular clouds, derived from photometric maps observed with the Herschel satellite. Filaments in the Lupus clouds have quite low column densities, with a median value of $\sim$1.5$\times$10$^{21}$ cm$^{-2}$ and most have masses per unit length lower ...
Benedettini, M.   +21 more
openaire   +8 more sources

Saint Cloud Reporter [Spring 1969] [PDF]

open access: yes, 1969
Saint Cloud Reporter, Spring 1969https://repository.stcloudstate.edu/magazines/1121/thumbnail ...
St. Cloud State University
core  

Correlated Charge Transport in an Organic Coulomb Glass

open access: yesAdvanced Materials, EarlyView.
ABSTRACT Advances in the development of organic field‐effect transistors (OFETs), electrically gated organic semiconductors (EGOFETs), and organic electrochemical transistors (OECTs) allow for the operation of these devices at very high charge‐carrier densities, where Coulomb interactions between carriers can be expected to become significant.
Magdalena Sophie Dörfler   +3 more
wiley   +1 more source

The Astrophysical Birth Environment of the Solar System Inferred from Cometary Noble Gases

open access: yesThe Astrophysical Journal
The stellar sources that contributed to the chemical and isotopic composition of the solar system, their mixing in the Galactic environment, and the evolution and longevity of the molecular cloud from which our solar system formed can be probed with ...
William S. Cassata   +5 more
doaj   +1 more source

A Complete HCN Survey of the Perseus Molecular Cloud

open access: yesThe Astrophysical Journal, 2023
We present a survey of the Perseus molecular cloud in the J = 1 → 0 transition of HCN, a widely used tracer of dense molecular gas. The survey was conducted with the CfA 1.2 m telescope, which at 89 GHz has a beamwidth of 11′ and a spectral resolution of
T. M. Dame, Charles J. Lada
doaj   +1 more source

Saint Cloud Reporter [Winter 1967] [PDF]

open access: yes, 1967
Saint Cloud Reporter, Winter 1967https://repository.stcloudstate.edu/magazines/1117/thumbnail ...
St. Cloud State University
core  

Organic Materials of Tomorrow: Horizons of Artificial Intelligence

open access: yesAdvanced Materials, EarlyView.
This review examines machine learning techniques accelerating the discovery of organic semiconductors by linking molecular structure to properties. Key methods include graph neural networks, generative models, and active learning. Applications to organic photovoltaics demonstrate practical impact.
Harold Mena   +3 more
wiley   +1 more source

The approach to collapse of molecular clouds [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2009
The dense molecular cloud cores that form stars, like other self-gravitating objects, undergo bulk oscillations. Just at the point of gravitational instability, their fundamental oscillation mode has zero frequency. We study, using perturbation theory, the evolution of a spherical cloud that possesses such a frozen mode.
Stahler, Steven W., Yen, Jeffrey J.
openaire   +2 more sources

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