Results 31 to 40 of about 1,922 (181)

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

Kinematics of simulated galaxies – I. Connecting dynamical and morphological properties of early-type galaxies at different redshifts [PDF]

Monthly Notices of the Royal Astronomical Society, 2018
State-of-the-art integral field surveys like $\mathrm{ATLAS^{3D}}$, SLUGGS, CALIFA, SAMI, and MaNGA provide large data sets of kinematical observations of early-type galaxies (ETGs), yielding constraints on the formation of ETGs. Using the cosmological hydrodynamical \textit{Magneticum Pathfinder} simulations, we investigate the paradigm of fast and ...
Schulze, Felix, Remus, Rhea-Silvia, Dolag, Klaus, Burkert, Andreas, Emsellem, Eric, van de Ven, Glenn   +5 more
openaire   +6 more sources

Phenomenology of renormalization group improved gravity from the kinematics of SPARC galaxies [PDF]

Physical Review D
Renormalization 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, Sayan Chakrabarti, Sovan Chakraborty   +2 more
semanticscholar   +1 more source

Unveiling the Kinematics and Dynamics of Ionized Gas in the Nearby Irregular Galaxy NGC 4449 [PDF]

The Astronomical Journal, 2002
AJ accepted, December issue, 33 pages, 13 ...
Margarita Valdez-Gutiérrez, Margarita Rosado, Ivânio Puerari, Leonid Georgiev, Jordanka Borissova, Patricia Ambrocio-Cruz   +5 more
openalex   +3 more sources

Gravitational Lensing and Dynamics (GLaD): combined analysis to unveil properties of high-redshift galaxies

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, A. Yıldırım, S. Suyu, A. Halkola   +3 more
semanticscholar   +1 more source

High-redshift quasars and their host galaxies – I. Kinematical and dynamical properties and their tracers [PDF]

Monthly Notices of the Royal Astronomical Society, 2019
ABSTRACT Observations of high-redshift quasars provide information on the massive black holes (MBHs) powering them and the galaxies hosting them. Current observations of z ≳ 6 hosts, at sub-millimetre wavelengths, trace the properties of cold gas, and these are used to compare with the correlations between MBHs and galaxies ...
Lupi, Alessandro, Volonteri, Marta, Decarli, Roberto, Bovino, Stefano, Silk, Joseph, Bergeron, Jacqueline   +5 more
openaire   +3 more sources

Accelerating galaxy dynamical modeling using a neural network for joint lensing and kinematic analyses

Astronomy & Astrophysics, 2023
Strong gravitational lensing is a powerful tool to provide constraints on galaxy mass distributions and cosmological parameters, such as the Hubble constant, H0. Nevertheless, inference of such parameters from images of lensing systems is not trivial as parameter degeneracies can limit the precision in the measured lens mass and cosmological results ...
Gomer, Matthew, Ertl, S., Biggio, L., Wang, H., Galan, A., Van de Vyvere, Lyne, Sluse, Dominique, Vernardos, G., Suyu, S. H.   +8 more
openaire   +5 more sources

The kiloparsec-scale gas kinematics in two star-forming galaxies at z ∼ 1.47 seen with ALMA and VLT-SINFONI [PDF]

Monthly notices of the Royal Astronomical Society, 2019
We present Atacama Large Millimeter/submillimeter Array (ALMA) CO(J = 2 − 1) observations of two main-sequence star-forming galaxies at z ∼ 1.47 taken from the High-Z Emission Line Survey (HiZELS).
J. Molina, E. Ibar, I. Smail, A. Swinbank, E. Villard, A. Escala, D. Sobral, T. Hughes   +7 more
semanticscholar   +1 more source

SHIELD: NEUTRAL GAS KINEMATICS AND DYNAMICS [PDF]

, 2016
We present kinematic analyses of the 12 galaxies in the “Survey of H i in Extremely Low-mass Dwarfs” (SHIELD). We use multi-configuration interferometric observations of the H i 21 cm emission line from the Karl G.
A. McNichols, A. McNichols, Y. Teich, Y. Teich, Elise Nims, J. Cannon, E. Adams, Elijah Z. Bernstein-Cooper, R. Giovanelli, M. Haynes, G. J'ozsa, K. McQuinn, K. McQuinn, J. Salzer, E. Skillman, S. Warren, A. Dolphin, E. Elson, Nathalie C. Haurberg, J. Ott, A. Saintonge, Ian Cave, Cedric J. Hagen, Shan Huang, S. Janowiecki, S. Janowiecki, Melissa V. Marshall, C. Thomann, A. V. Sistine   +28 more
semanticscholar   +1 more source

MaNGA DynPop – IV. Stacked total density profile of galaxy groups and clusters from combining dynamical models of integral-field stellar kinematics and galaxy–galaxy lensing

Monthly Notices of the Royal Astronomical Society, 2023
ABSTRACT We present the measurement of total and stellar/dark matter decomposed mass density profile around a sample of galaxy groups and clusters with dynamical masses derived from integral-field stellar kinematics from the MaNGA survey in Paper I and weak lensing derived from the DECaLS imaging survey.
Chunxiang Wang, Ran Li, Kai Zhu, Huanyuan Shan, Weiwei Xu, Michele Cappellari, Liang Gao, Nan Li, Shengdong Lu, Shude Mao, Ji Yao, Yushan Xie   +11 more
openaire   +2 more sources