Results 51 to 60 of about 43,402 (211)

Interpreting the Evolution of the Size - Luminosity Relation for Disk Galaxies from Redshift 1 to the Present

open access: yes, 2010
A sample of very high resolution cosmological disk galaxy simulations is used to investigate the evolution of galaxy disk sizes back to redshift 1 within the Lambda CDM cosmology.
A. M. Brooks   +113 more
core   +1 more source

Secular evolution in disk galaxies [PDF]

open access: yes, 2013
159 pages, 84 postscript figures, 3 tables, LaTeX, requires tweaked cupbook.cls; published in Secular Evolution of Galaxies, XXIII Canary Islands Winter School of Astrophysics, ed. J Falcon-Barroso & J. H.
openaire   +2 more sources

Understanding Degradation Mechanisms in Water‐In‐Salt Electrolyte. Part 2: Impact of the Electrochemical Parameters on the Cycling Behavior of LiFePO4 versus TiS2

open access: yesBatteries &Supercaps, EarlyView.
Cycling water‐in‐salt batteries involves complex degradation processes that require multiprobe analysis. Using online electrochemical mass spectrometry (OEMS), postmortem X‐ray photoemission spectroscopy (XPS) (including hard‐XPS), and scanning electron microscopy (SEM), the degradation mechanisms are examined in composite electrodes (TiS2 and LiFePO4)
Célia Doublet   +7 more
wiley   +1 more source

Star Formation Efficiency in Nearby Galaxies Revealed with a New CO-to-H2 Conversion Factor Prescription

open access: yesThe Astrophysical Journal
Determining how the galactic environment, especially the high gas densities and complex dynamics in bar-fed galaxy centers, alters the star formation efficiency (SFE) of molecular gas is critical to understanding galaxy evolution.
Yu-Hsuan Teng   +26 more
doaj   +1 more source

The Stability of Some Galaxy Disks is Still Perplexing

open access: yesThe Astrophysical Journal, 2023
The problem of how some disk galaxies avoid forming bars remains unsolved. Many galaxy models having reasonable properties continue to manifest vigorous instabilities that rapidly form strong bars and no widely accepted idea has yet been advanced to ...
J. A. Sellwood, R. G. Carlberg
doaj   +1 more source

Starbursts in multiple galaxy mergers [PDF]

open access: yes, 2000
We numerically investigate stellar and gaseous dynamical evolution of mergers between five identical late-type disk galaxies with the special emphasis on star formation history and chemical evolution of multiple galaxy mergers.
Athanassoula E.   +9 more
core   +2 more sources

Lopsidedness in Early-Type Disk Galaxies [PDF]

open access: yesThe Astronomical Journal, 1998
We quantify the mean asymmetry of 54 face-on, early type disk galaxies (S0 to Sab) using the amplitude of the m=1 azimuthal Fourier component of the R-band surface brightness. We find that the median lopsidedness, (A_1/A_0)_{mean}, of our sample is 0.11 and that the most lopsided 20% of our galaxies have (A_1/A_0)_{mean} >= 0.19.
Rudnick, Gregory, Rix, Hans-Walter
openaire   +2 more sources

Subterranean environments contribute to three‐quarters of classified ecosystem services

open access: yesBiological Reviews, EarlyView.
ABSTRACT Beneath the Earth's surface lies a network of interconnected caves, voids, and systems of fissures forming in rocks of sedimentary, igneous, or metamorphic origin. Although largely inaccessible to humans, this hidden realm supports and regulates services critical to ecological health and human well‐being.
Stefano Mammola   +30 more
wiley   +1 more source

Stellar and Gaseous Nuclear Disks Observed in Nearby (U)LIRGs [PDF]

open access: yes, 2014
We present near-infrared integral field spectroscopy of the central kiloparsec of 17 nearby luminous and ultra-luminous infrared galaxies undergoing major mergers.
Armus, Lee   +8 more
core   +5 more sources

Superbubbles in disk galaxies

open access: yesThe Astrophysical Journal, 1988
Correlated supernovae from an OB association create a superbubble: a large, thin, shell of cold gas surrounding a hot pressurized interior. Because supernova blast waves usually become subsonic before reaching the walls of the shell or cooling radiatively, the energy input from supernovae may be reasonably approximated as a continuous luminosity. Using
Mordecai-Mark Mac Low, Richard McCray
openaire   +1 more source

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