Results 11 to 20 of about 407,723 (180)

Cosmology using cluster internal velocity dispersions [PDF]

open access: yesNew Astronomy, 1997
28 pages, LaTeX uses Elsevier style file, 7 postscript figures (3 bitmapped to lower res.) included.
BORGANI, STEFANO   +3 more
openaire   +4 more sources

Mode Analysis of Pt/LGS Surface Acoustic Wave Devices

open access: yesSensors, 2020
Platinum (Pt) gratings on langasite (LGS) substrates are a widely used structures in high temperature surface acoustic wave (SAW) devices. Multiple modes can be excited in Pt/LGS SAW devices owing to the heavy weight of the Pt electrode and leaky waves ...
Hongsheng Xu   +8 more
doaj   +1 more source

Seismic Interferometry Method Based on Hierarchical Frequency Fusion and Its Application in Microtremor Survey

open access: yesApplied Sciences, 2023
Site velocity structure determination and stratigraphic division are important purposes of microtremor survey, and the precision of dispersion curves is an important factor affecting the accuracy of microtremor survey.
Xingang Mou   +5 more
doaj   +1 more source

Calculation of velocity dispersion of the nearby galaxies using different stellar template libraries [PDF]

open access: yesSerbian Astronomical Journal, 2010
We present the central velocity dispersion measurements of the nearby galaxies from the Sloan Digital Sky Survey (SDSS). Using the sample from the paper by Ho et al. 2009, we have selected 23 galaxies for which we calculate the velocity dispersion.
Lalović Ana
doaj   +3 more sources

Macro-flow and Velocity Dispersion [PDF]

open access: yes8th International Congress of the Brazilian Geophysical Society, 2003
Deformation resulting from a compressional wave can cause pore fluid motion on the order of the wavelength. If the fluid mobility is high, pressure can be equilibrated between regions of gas versus brine saturation. This can result in a relaxed, drained velocity even lower than dry or gas saturated velocities. This diffusion of fluid pressure can cause
M. Batzle, R. Hofmann
openaire   +2 more sources

Imprints of zero-age velocity dispersions and dynamical heating on the age–velocity dispersion relation [PDF]

open access: yesPublications of the Astronomical Society of Japan, 2017
Abstract Observations of stars in the the solar vicinity show a clear tendency of old stars to have larger velocity dispersions. This relation is called the age–velocity dispersion relation (AVR) and it is believed to provide insight into the heating history of the Milky Way galaxy. Here, in order to investigate the origin of the AVR, we
Kumamoto, Jun   +2 more
openaire   +2 more sources

What drives the velocity dispersion of ionized gas in star-forming galaxies? [PDF]

open access: yes, 2019
We analyze the intrinsic velocity dispersion properties of 648 star-forming galaxies observed by the Mapping Nearby Galaxies at Apache Point Observatory (MaNGA) survey, to explore the relation of intrinsic gas velocity dispersions with star formation ...
Bing, Longji   +13 more
core   +2 more sources

Velocity dispersions in galaxy clusters

open access: yesThe Astrophysical Journal, 1993
We analyze the velocity dispersions of 79 galaxy clusters having at least 30 galaxies with available redshifts. We show that different estimates of velocity dispersion give similar results on cluster samples of at least 20 galaxies each. However, only robust estimates of velocity dispersion seem to be efficient on cluster samples with 10 galaxies each.
GIRARDI, MARISA   +4 more
openaire   +3 more sources

The Dynamics of Dense Cores in the Perseus Molecular Cloud II: The Relationship Between Dense Cores and the Cloud [PDF]

open access: yes, 2010
We utilize the extensive datasets available for the Perseus molecular cloud to analyze the relationship between the kinematics of small-scale dense cores and the larger structures in which they are embedded.
Alyssa Goodman   +31 more
core   +2 more sources

Direct surface wave tomography for three dimensional structure based on surface wave traveltimes: Methodology review and applications

open access: yes地球与行星物理论评, 2023
Surface wave tomography using dispersion data to obtain isotropic and anisotropic shear wave velocity structures is a very efficient approach to study regional and global tectonics and deformation and to probe high-resolution crustal, upper mantle and ...
Huajian Yao   +4 more
doaj   +1 more source

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