The Dynamics of Dense Cores in the Perseus Molecular Cloud II: The Relationship Between Dense Cores and the Cloud [PDF]
, 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
Estimation of the Soil Layers Thickness Using Multi-Chanel Analysis of Surface Waves and Surface Wave Dispersion Curve [PDF]
Journal of Structural and Construction Engineering, 2021 One of the most interesting topics in the geotechnical and geophysical engineering is the use of surface waves to characterize the earth subsurface layers.
Mehdi Hashemi Jokar +2 more
doaj +1 more source
A Dependence of the Tidal Disruption Event Rate on Global Stellar Surface Mass Density and Stellar Velocity Dispersion [PDF]
, 2017 The rate of tidal disruption events (TDEs), , is predicted to depend on stellar conditions near the super-massive black hole (SMBH), which are on difficult-to-measure sub-parsec scales. We test whether depends on kpc-scale global galaxy properties, which
O. Graur +6 more
semanticscholar +1 more source
Large-scale velocity dispersion and the cosmic web [PDF]
Monthly notices of the Royal Astronomical Society, 2018 Gravitational collapse in cosmological context produces an intricate cosmic web of voids, walls, filaments and nodes. The anisotropic nature of collisionless collapse leads to the emergence of an anisotropic velocity dispersion, or stress, that absorbs ...
M. Buehlmann, O. Hahn
semanticscholar +1 more source
The central velocity dispersion of the Milky Way bulge [PDF]
Astronomy & Astrophysics, 2018 Context. Current spectroscopic and photometric surveys are providing a comprehensive view of the Milky Way bulge stellar population properties with unprecedented accuracy.
E. Valenti +11 more
semanticscholar +1 more source
The Mean and Scatter of the Velocity Dispersion-Optical Richness Relation for maxBCG Galaxy Clusters [PDF]
, 2007 The distribution of galaxies in position and velocity around the centers of galaxy clusters encodes important information about cluster mass and structure. Using the maxBCG galaxy cluster catalog identified from imaging data obtained in the Sloan Digital
Annis, J. +11 more
core +4 more sources
Velocity dispersion in layered media [PDF]
SEG Technical Program Expanded Abstracts 2005, 2005 Summary Velocity dispersion in stratified media depends upon the impedance contrast between contiguous layers and the ratio (R) of the wavelength to the layer thickness. The goal of the present work is to understand the scale dependence of propagation velocities in periodically layered media. We based our analysis in 1-D wave equation forward modeling.
Carlos Cobos, De‐hua Han
openaire +1 more source
Evolution of dark matter velocity dispersion [PDF]
Journal of Cosmology and Astroparticle Physics, 2018 Cosmological perturbation theory for the late Universe dominated by dark matter is extended beyond the perfect pressureless fluid approximation by taking the dark matter velocity dispersion tensor as an additional field into account.
Alaric Erschfeld, S. Floerchinger
semanticscholar +1 more source
The age–velocity dispersion relation of the Galactic discs from LAMOST–Gaia data [PDF]
, 2017 We present the age-velocity dispersion relation (AVR) in three dimensions in the solar neighbourhood using 3,564 commonly observed sub-giant/red-giant branch stars selected from LAMOST, which gives the age and radial velocity, and \emph{Gaia}, which ...
Jincheng Yu, Chao Liu
semanticscholar +1 more source
Colors, magnitudes and velocity dispersions in early-type galaxies: Implications for galaxy ages and metallicities [PDF]
, 2004 We present an analysis of the color-magnitude-velocity dispersion relation for a sample of 39320 early-type galaxies within the Sloan Digital Sky Survey. We demonstrate that the color-magnitude relation is entirely a consequence of the fact that both the
Bower R. G. +9 more
core +2 more sources