Results 31 to 40 of about 1,890 (176)
The dynamics of three nearby E0 galaxies in refracted gravity [PDF]
Astronomy & Astrophysics, 2021 We tested whether refracted gravity, a theory of modified gravity that describes the dynamics of galaxies without the aid of dark matter, can model the dynamics of the three massive elliptical galaxies, NGC 1407, NGC 4486, and NGC 5846, out to $\sim ...
V. Cesare, A. Diaferio, T. Matsakos
semanticscholar +1 more source
Kinematical and Dynamical Modeling of Elliptical Galaxies [PDF]
EAS Publications Series, 2006 Elements of kinematical and dynamical modeling of elliptical galaxies (Es) are presented. In projection, NFW models resemble Sersic models, but with a very narrow range of shapes (m=3+/-1). The total density profile of Es cannot be NFW-like because the predicted local M/L and aperture velocity dispersion within an effective radius (Re) are much lower ...
Ewa L. Lokas +4 more
openaire +3 more sources
Gas and stellar dynamics in Stephan's Quintet. Mapping the kinematics in a closely interacting compact galaxy group [PDF]
Astronomy & Astrophysics, 2021 In nearby compact galaxy groups we can study the complex processes of galaxy interactions at high resolution and obtain a window into a time in the history of the Universe when the galaxies were closely spaced and the intergalactic medium was awash with ...
M. Yttergren +6 more
semanticscholar +1 more source
The empirical laws of galaxy dynamics: from gas kinematics to weak lensing [PDF]
Galaxies obey a set of strict dynamical laws, which imply a close coupling between the visible matter (stars and gas) and the observed dynamics (set by dark matter in the standard cosmological context). Here we review recent results from weak gravitational lensing, which allows studying the empirical laws of galaxy dynamics out to exceedingly large ...
Federico Lelli +4 more
openalex +3 more sources
Deep Kinematics and Dynamics of Edge-on S0 Galaxies. I. NGC 3115
, 1993 As a first step of a program aimed to the detection of dark matter (or radial variations of M/L) in early-type galaxies, we report deep spectroscopic observations of the bulge-dominated edge-on S0 galaxy NGC 3115, made at ESO, La Silla, using EFOSC at the 3.6m telescope and EMMI at NTT.
M. Capaccioli +3 more
openalex +4 more sources
The dynamics of the dE galaxy FS76 : bridging the kinematic dichotomy between Es and dEs
, 2001 We present major and minor axis kinematics out to 2 half-light radii for the bright (M_B=-16.7) dwarf elliptical FS76, a member of the NGC5044 group. Its velocity dispersion is 46 \pm 2 km/s in the center and rises to 70 \pm 10 km/s at half-light radius. Beyond 1R_e the dispersion starts to fall again.
S. De Rijcke +3 more
openalex +4 more sources
Phenomenology of renormalization group improved gravity from the kinematics of SPARC galaxies [PDF]
Physical Review DRenormalization Group correction to General Relativity (RGGR) proposes a logarithmic running of the gravitational coupling $\left(G\right)$, resulting in a modified description of gravity.
Esha Bhatia +2 more
semanticscholar +1 more source
Kinematic scaling relations of CALIFA galaxies: A dynamical mass proxy for galaxies across the Hubble sequence [PDF]
Monthly Notices of the Royal Astronomical Society, 2018 We used ionized gas and stellar kinematics for 667 spatially resolved galaxies publicly available from the Calar Alto Legacy Integral Field Area survey (CALIFA) 3rd Data Release with the aim of studying kinematic scaling relations as the Tully $\&$ Fisher (TF) relation using rotation velocity, $V_{rot}$, the Faber $\&$ Jackson (FJ) relation ...
B. Mancillas +11 more
openaire +6 more sources
Astronomy & Astrophysics, 2020 The dynamical modelling of integral field unit (IFU) stellar kinematics is a powerful tool to unveil the dynamical structure and mass build-up of galaxies in the local Universe, while gravitational lensing is nature’s cosmic telescope to explore the ...
G. Chirivì +3 more
semanticscholar +1 more source