Results 1 to 10 of about 187 (137)

Evaluating galaxy dynamical masses from kinematics and jeans equilibrium in simulations [PDF]

Monthly Notices of the Royal Astronomical Society, 2021
ABSTRACT We provide prescriptions to evaluate the dynamical mass (Mdyn) of galaxies from kinematic measurements of stars or gas using analytic considerations and the VELA suite of cosmological zoom-in simulations at z = 1–5. We find that Jeans or hydrostatic equilibrium is approximately valid for galaxies of stellar masses above M⋆ ∼ 109.
Michael Kretschmer, Avishai Dekel, Jonathan Freundlich, Sharon Lapiner, Daniel Ceverino, Joel Primack   +5 more
openaire   +2 more sources

The SAMI Galaxy Survey: Kinematics of Stars and Gas in Brightest Group Galaxies—The Role of Group Dynamics [PDF]

The Astrophysical Journal, 2021
Abstract We study the stellar and gas kinematics of the brightest group galaxies (BGGs) in dynamically relaxed and unrelaxed galaxy groups for a sample of 154 galaxies in the SAMI galaxy survey. We characterize the dynamical state of the groups using the luminosity gap between the two most luminous galaxies and the BGG offset from the ...
Mojtaba Raouf, Rory Smith, Habib G. Khosroshahi, Jesse van de Sande, Julia J. Bryant, Luca Cortese, S. Brough, Scott M. Croom, Ho Seong Hwang, Simon Driver, Ángel R. López-Sánchez, Jongwan Ko, Jae-Woo Kim, Jihye Shin, Nicholas Scott, Joss Bland-Hawthorn, Samuel N. Richards, Matt Owers, J. S. Lawrence, Iraklis S. Konstantopoulos   +19 more
openaire   +2 more sources

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 ...
Mamon, G. A., Lokas, E., Dekel, A., Stoehr, F., Cox, T. J.   +4 more
openaire   +2 more sources

Kinematics and dynamics of the haloes of supergiant galaxies [PDF]

Monthly Notices of the Royal Astronomical Society, 1985
On presente des mesures de la cinematique interne des halos de 3 galaxies supergeantes dans des amas moderement riches. On trouve que les profils de la dispersion des vitesses sont plats ou croissent avec le rayon.
D. Carter, I. Inglis, R. S. Ellis, G. Efstathiou, J. G. Godwin   +4 more
openaire   +1 more source

Kinematics, substructure and luminosity-weighted dynamics of six nearby galaxy groups [PDF]

Monthly Notices of the Royal Astronomical Society, 2006
15 pages, 5 figures. Accepted for publication in MNRAS.
Firth, P., Evstigneeva, E. A., Jones, J. B., Drinkwater, M. J., Phillipps, S., Gregg, M. D.   +5 more
openaire   +3 more sources

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

Photometry, Kinematics and Dynamics of the Barred Galaxy NGC 5383 [PDF]

Symposium - International Astronomical Union, 1983
NGC 5383 has often been used as a prototype of SB(s)b type galaxies, particulary in studies of gas flow. We have therefore set out to complement the existing data with surface photometry, velocity measurements in the bar and a dynamical model.
E. Athanassoula, M. F. Duval
openaire   +1 more source

Kinematics and dynamics of the "superthin" edge-on disk galaxy IC 5249 [PDF]

Astronomy & Astrophysics, 2001
11 pages and 8 figures. Accepted for Astronomy and Astrophysics (September 2001)
van der Kruit, P C, Jiminez-Vicente, J, Kregel, M, Freeman, Kenneth   +3 more
openaire   +2 more sources

Morphology, Stellar Kinematics and Dynamics of Barred Galaxies [PDF]

Symposium - International Astronomical Union, 1983
A brief review is given of the morphology of barred galaxies, following Kormendy (1981, 1982). The features illustrated include bulges, bars, disks, lenses, and inner and outer rings.Most of the paper is devoted to a detailed discussion of the absorption-line velocity field of the prototypical SBO galaxy NGC 936.
openaire   +1 more source

Kinematics and dynamics of the luminous infrared galaxy pair NGC 5257/58 (Arp 240) [PDF]

Astronomy & Astrophysics, 2018
Context. Encounters between galaxies modify their morphology, kinematics, and star formation history. The relation between these changes and external perturbations is not straightforward. The great number of parameters involved requires both the study of large samples and individual encounters where particular features, motions, and perturbations can ...
Fuentes-Carrera, I., Rosado, M., Amram, P., Laurikainen, E., Salo, H., Gómez-López, J., Castañeda, H., Bernal, A., Balkowski, C.   +8 more
openaire   +5 more sources