Results 81 to 90 of about 137,092 (301)

The formation of molecular clouds [PDF]

Monthly Notices of the Royal Astronomical Society, 2001
In a recent paper, Elmegreen (2000) has made a cogent case, from an observational point of view, that the lifetimes of molecular clouds are comparable to their dynamical timescales. If so, this has important implications for the mechanisms by which molecular clouds form.
Pringle, J. E., Allen, Ronald J., Lubow, S. H.   +2 more
openaire   +2 more sources

Frontier Advances of Emerging High‐Entropy Anodes in Alkali Metal‐Ion Batteries

Advanced Functional Materials, EarlyView.
Recent advances in microscopic morphology control of high‐entropy anode materials for alkali metal‐ion batteries. Abstract With the growing demand for sustainable energy, portable energy storage systems have become increasingly critical. Among them, the development of rechargeable batteries is primarily driven by breakthroughs in electrode materials ...
Liang Du, Kaidi Zhang, Liang Wang, Di Zhao, Mengqing Hu, Mingli Li, Ming Zhou, Zhenzhen Wu, Mengyang Dong, Bo Fu, Porun Liu, Yun Wang, Hongxia Wang, Yuantong Gu, Lei Zhang   +14 more
wiley   +1 more source

Two-Fluid MHD Simulations of Converging HI Flows in the Interstellar Medium. I: Methodology and Basic Results

, 2008
We develop an unconditionally stable numerical method for solving the coupling between two fluids (frictional forces/heatings, ionization, and recombination), and investigate the dynamical condensation process of thermally unstable gas that is provided ...
Draine B. T., Hennebelle P., Hennebelle P., Shu‐ichiro Inutsuka, Tsuyoshi Inoue, van Leer B.   +5 more
core   +1 more source

Star formation in the giant HII regions of M101 [PDF]

, 1999
The molecular components of three giant HII regions (NGC 5461, NGC 5462, NGC 5471) in the galaxy M101 are investigated with new observations from the James Clerk Maxwell Telescope, the NRAO 12-meter, and the Owens Valley millimeter array.
Braun R., Christine D. Wilson, Israel F. P., Jean Giannakopoulou‐Creighton, Johansson L. E. B., Michel Fich, Rosa M. R.   +6 more
core   +2 more sources

PHANGS-JWST: The largest extragalactic molecular cloud catalog traced by polycyclic aromatic hydrocarbon emission

Astronomy & Astrophysics
High-resolution JWST images of nearby spiral galaxies reveal polycyclic aromatic hydrocarbon (PAH) structures that potentially trace molecular clouds, even CO-dark regions.
Bazzi Z., Colombo D., Bigiel F., Leroy A. K., Rosolowsky E., Sandstrom K., Duarte-Cabral A., Faustino Vieira H., Kobayashi M. I. N., He H., Meidt S. E., Barnes A. T., Klessen R. S., Glover S. C. O., Thorp M. D., Pan H.-A., Chown R., Smith R. J., Dale D. A., Williams T. G., Amiri A., Dlamini S., Chastenet J., Sarbadhicary S. K., Hughes A., Lee J. C., Hands L.   +26 more
doaj   +1 more source

Neutral Atomic and Molecular Clouds and Star Formation in the Outer Carina Arm

The Astrophysical Journal, 2023
We present a comprehensive investigation of H i (super)clouds, molecular clouds (MCs), and star formation in the Carina spiral arm of the outer Galaxy.
Geumsook Park, Bon-Chul Koo, Kee-Tae Kim, Bruce Elmegreen   +3 more
doaj   +1 more source

Fast Molecular Cloud Destruction Requires Fast Cloud Formation [PDF]

The Astrophysical Journal Letters, 2017
Abstract A large fraction of the gas in the Galaxy is cold, dense, and molecular. If all this gas collapsed under the influence of gravity and formed stars in a local free-fall time, the star formation rate in the Galaxy would exceed that observed by more than an order of magnitude. Other star-forming galaxies behave similarly.
Mordecai-Mark Mac Low, Andreas Burkert, Juan C. Ibáñez-Mejía   +2 more
openaire   +3 more sources

Intrinsic Nanopore‐Assisted SnP2S6 Memristors With Ti Ion Dynamics for Compact Logic‐In‐Memory Hardware

Advanced Functional Materials, EarlyView.
Tin hexathiophosphate memristors leverage intrinsic nanopores together with a guided filament formation strategy to regulate titanium ion motion and switching behavior. The devices support reliable nonvolatile memory and reconfigurable logic‐in‐memory, demonstrating 14 Boolean logic functions in a single cell.
Thaw Tint Te Tun, Sanchali Mitra, Hongxi Su, Jiali Huo, Haofei Zheng, Michel Bosman, Yee Sin Ang, Kah‐Wee Ang   +7 more
wiley   +1 more source

From the warm magnetized atomic medium to molecular clouds

, 2008
{It has recently been proposed that giant molecular complexes form at the sites where streams of diffuse warm atomic gas collide at transonic velocities.} {We study the global statistics of molecular clouds formed by large scale colliding flows of warm ...
Audit, Ballesteros-Paredes, Crutcher, E. Audit, E. Vázquez-Semadeni, Fromang, Fryxell, Glover, Heitsch, Heitsch, Hennebelle, Hennebelle, Hennebelle, Koyama, Koyama, P. Hennebelle, R. Banerjee, R. S. Klessen, Teyssier, Troland, Vázquez-Semadeni, Vázquez-Semadeni, Williams   +22 more
core   +3 more sources

Molecular Clouds and Star Formation Rate in Disk Galaxies

Open Astronomy, 2016
We use N-body/hydrodynamic simulations of a Milky Way-like galaxy to study the physical properties of giant molecular clouds and star formation rate on different spatial scales.
Vasiliev E. O., Khoperskov S. A., Khoperskov A. V.   +2 more
doaj   +1 more source