Results 51 to 60 of about 43,226 (214)

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

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

Composite Bulges. III. A Study of Nuclear Star Clusters in Nearby Spiral Galaxies

open access: yesThe Astrophysical Journal, 2023
We present photometric and morphological analyses of nuclear star clusters (NSCs)—very dense, massive star clusters present in the central regions of most galaxies—in a sample of 33 massive disk galaxies within 20 Mpc, part of the “Composite Bulges ...
Aishwarya Ashok   +19 more
doaj   +1 more source

On The Extended Knotted Disks of Galaxies

open access: yes, 2007
The stellar disks of many spiral galaxies are twice as large as generally thought. We use archival data from the Galaxy Evolution Explorer mission (GALEX) to quantify the statistical properties of young stellar clusters in the outer, extended disks of a ...
Christlein, Daniel, Zaritsky, Dennis
core   +2 more sources

Signatures of Galaxy-Cluster Interactions: Spiral Galaxy Rotation Curve Asymmetry, Shape, and Extent [PDF]

open access: yes, 2000
The environmental dependencies of the characteristics of spiral galaxy rotation curves are studied in this work. We use our large, homogeneously collected sample of 510 cluster spiral galaxy rotation curves to test the claim that the shape of a galaxy's ...
Adabi M. G.   +16 more
core   +4 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

Improving Cycle Life and Capacity Retention in PVMPO‖Li Dual‐Ion Lithium‐Organic Batteries Using an EC‐Free and FEC Additive Containing Electrolyte

open access: yesSmall Methods, EarlyView.
The major bottleneck of PVMPO‐based positive electrodes is electrode degradation during extended cycling with EC‐containing electrolytes. This issue is mitigated by using EC‐free electrolytes with FEC additives, which exhibit reduced interfacial resistance, fewer surface cracks, improved capacity retention, and suppressed electrode degradation, thereby
Sathiya Priya Panjalingam   +7 more
wiley   +1 more source

Quenching of Massive Disk Galaxies in the IllustrisTNG Simulation

open access: yesThe Astrophysical Journal, 2022
A rare population of massive disk galaxies have been found to invade the red sequence dominated by early-type galaxies. The formation and origins of these red/quenched massive disk galaxies have recently gained great interest.
Yingzhong Xu   +6 more
doaj   +1 more source

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