Electron velocity distribution function in a plasma with temperature gradient and in the presence of suprathermal electrons: application to incoherent-scatter plasma lines [PDF]
Annales Geophysicae, 1998 The plasma dispersion function and the reduced velocity distribution function are calculated numerically for any arbitrary velocity distribution function with cylindrical symmetry along the magnetic field.
P. Guio +3 more
doaj +1 more source
Velocity Dispersion, Size, Sérsic Index, and Dn4000: The Scaling of Stellar Mass with Dynamical Mass for Quiescent Galaxies [PDF]
, 2017 We examine the relation between stellar mass, velocity dispersion, size, Sérsic index, and for a volume-limited sample of ∼40,000 quiescent galaxies in the SDSS.
H. Zahid, M. Geller
semanticscholar +1 more source
THE SCALING OF STELLAR MASS AND CENTRAL STELLAR VELOCITY DISPERSION FOR QUIESCENT GALAXIES AT z < 0.7 [PDF]
, 2016 We examine the relation between stellar mass and central stellar velocity dispersion—the M*σ relation—for massive quiescent galaxies at z < 0.7. We measure the local relation from the Sloan Digital Sky Survey and the intermediate redshift relation from ...
J. Zahid +3 more
semanticscholar +1 more source
MOND PREDICTION FOR THE VELOCITY DISPERSION OF THE “FEEBLE GIANT” CRATER II [PDF]
, 2016 Crater II is an unusual object among the dwarf satellite galaxies of the Local Group in that it has a very large size for its small luminosity. This provides a strong test of MOND, as Crater II should be in the deep MOND regime (gin ≈ 34 km2 s−2 kpc−1 ...
S. McGaugh
semanticscholar +1 more source
The Velocity Dispersion Function of Very Massive Galaxy Clusters: Abell 2029 and Coma [PDF]
, 2016 Based on an extensive redshift survey for galaxy clusters Abell 2029 and Coma, we measure the luminosity functions (LFs) and stellar mass functions (SMFs) for the entire cluster member galaxies.
J. Sohn +5 more
semanticscholar +1 more source
Meikuang Anquan, 2020 Dispersion curves of Rayleigh channel waves may have “cross” between the fundamental and first higher order modes either in the phase velocities or in group velocities in the low frequency band.
HE Daxi, ZHU Peimin, SHEN Suishui, CAI Wei, WANG Wengang
doaj +1 more source
Biases in the estimation of velocity dispersions and dynamical masses for galaxy clusters [PDF]
EPJ Web of Conferences, 2020 Using a set of 73 numerically simulated galaxy clusters, we have characterised the statistical and physical biases for three velocity dispersion and mass estimators, namely biweight, gapper and standard deviation, in the small number of galaxies regime ...
Ferragamo A. +5 more
doaj +1 more source
A unified model for age-velocity dispersion relations in Local Group galaxies: Disentangling ISM turbulence and latent dynamical heating [PDF]
, 2017 We analyse age–velocity dispersion relations (AVRs) from kinematics of individual stars in eight Local Group galaxies ranging in mass from Carina (M* ∼ 106 M⊙) to M31 (M* ∼ 1011 M⊙).
R. Leaman +13 more
semanticscholar +1 more source
Frontiers in Astronomy and Space Sciences, 2017 We present the galactic stellar age—velocity dispersion relation obtained from a semi-analytic model of galaxy formation. We divide galaxies into two populations: galaxies which have over-massive/under-massive black holes (BHs) against the best-fitting ...
Hikari Shirakata +3 more
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The Velocity Dispersion Function for Quiescent Galaxies in the Local Universe [PDF]
, 2017 We investigate the distribution of central velocity dispersions for quiescent galaxies in the SDSS at 0.03 ≤ z ≤ 0.10. To construct the field velocity dispersion function (VDF), we construct a velocity dispersion complete sample of quiescent galaxies ...
J. Sohn, H. Zahid, M. Geller
semanticscholar +1 more source