Results 71 to 80 of about 2,425,195 (209)
The Spectacular Ionized Interstellar Medium of NGC55 [PDF]
, 1996 We present deep Halpha+[NII], [SII] (6716,6731A) and [OII] (3726,3729A) images of the highly inclined, actively star--forming SBm galaxy NGC 55, located in the nearby Sculptor Group. Due to its proximity, NGC 55 provides a unique opportunity to study the
Ferguson, Annette M. N. +2 more
core +2 more sources
Two Types of q$$ q $$‐Gaussian Distributions Used to Study the Diffusion in a Finite Region
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT In this work, we explore both the ordinary q$$ q $$‐Gaussian distribution and a new one defined here, determining both their mean and variance, and we use them to construct solutions of the q$$ q $$‐deformed diffusion differential equation. This approach allows us to realize that the standard deviation of the distribution must be a function of
Won Sang Chung +3 more
wiley +1 more source
The futuristic manifolds of REM sleep
Journal of Sleep Research, Volume 34, Issue 2, April 2025.Summary Since one of its first descriptions 70 years ago, rapid eye movement sleep has continually inspired and excited new generations of sleep researchers. Despite significant advancements in understanding its neurocircuitry, underlying mechanisms and microstates, many questions regarding its function, especially beyond the early neurodevelopment ...
Liborio Parrino, Ivana Rosenzweig
wiley +1 more source
Metallicity Dependence of Molecular Cloud Hierarchical Structure at Early Evolutionary Stages
The Astrophysical Journal, 2023 The formation of molecular clouds out of H i gas is the first step toward star formation. Its metallicity dependence plays a key role in determining star formation throughout cosmic history.
Masato I. N. Kobayashi +5 more
doaj +1 more source
The Interstellar Medium of Dwarf Galaxies
Galaxies, 2022 Dwarf galaxies are by far the most numerous galaxies in the Universe, showing properties that are quite different from those of their larger and more luminous cousins. This review focuses on the physical and chemical properties of the interstellar medium
Christian Henkel +2 more
doaj +1 more source
Physical processes in the interstellar medium
, 1998 Interstellar Matter-- An Overview. Elastic Collisions and Kinetic Equilibrium. Radiative Processes. Excitation. Ionization and Dissociation. Kinetic Temperature. Optical Properties of Grains. Polarization and Grain Alignment.
L. Spitzer
semanticscholar +1 more source
Meteoritics &Planetary Science, EarlyView.Abstract Meteorite collection inventories show that many related meteorite groups have very different numerical abundances (e.g., lunar versus Martian meteorites; Eagle Station pallasites versus main‐group pallasites; eucrites versus diogenites; ungrouped Antarctic irons versus ungrouped non‐Antarctic irons; carbonaceous chondrite‐related (CC) iron ...
Alan E. Rubin
wiley +1 more source
Measurement of Interstellar Magnetization by Synchrotron Polarization Variance
The Astrophysical JournalSince synchrotron polarization fluctuations are related to the fundamental properties of the magnetic field, we propose the polarization intensity variance to measure the Galactic interstellar medium (ISM) magnetization.
Ning-Ning Guo +4 more
doaj +1 more source
LAUNCHING COSMIC-RAY-DRIVEN OUTFLOWS FROM THE MAGNETIZED INTERSTELLAR MEDIUM [PDF]
, 2015 We present a hydrodynamical simulation of the turbulent, magnetized, supernova (SN)-driven interstellar medium (ISM) in a stratified box that dynamically couples the injection and evolution of cosmic rays (CRs) and a self-consistent evolution of the ...
P. Girichidis +12 more
semanticscholar +1 more source
, 2010 We use the growing data sets of very-metal-poor stars to study the impact of stellar winds of fast rotating massive stars on the chemical enrichment of the early Galaxy.
Beers +36 more
core +1 more source