Results 11 to 20 of about 874 (181)

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
Rosado, M., Castañeda, H., H. Salo, Fuentes-Carrera, I., H. O. Castañeda, Amram, P., Laurikainen, E., Bernal, A., M. Rosado, Gómez-López, J., P. Amram, C. Balkowski, Salo, H., I. Fuentes-Carrera, Balkowski, C., J. A. Gómez-López, Gómez-López, J. A., E. Laurikainen, A. Bernal, Castañeda, H. O.   +19 more
core   +7 more sources

Structure and dynamics of galaxies with a low surface-brightness disc - I. The stellar and ionized-gas kinematics [PDF]

Monthly Notices of the Royal Astronomical Society, 2008
Photometry and long-slit spectroscopy are presented for a sample of six galaxies with a low surface-brightness stellar disc and a bulge. The characterizing parameters of the bulge and disc components were derived by means of a two-dimensional photometric
Bertola, F., Corsini, EM, Bertola, F, Morelli, L, Corsini, E. M., L. Morelli, E. M. Corsini, Magorrian, J, Mendez-Abreu, J, Morelli, L., BERTOLA, FRANCESCO, Corsini, E.M., Coccato, L., A. Pizzella, F. Bertola, PIZZELLA, ALESSANDRO, COCCATO L., Corsini, E., M. Sarzi, Sarzi, M, MÉNDEZ ABREU J., Pizzella, A., MAGORRIAN J., Méndez-Abreu, J., J. Magorrian, Coccato, L, J. Méndez-Abreu, SARZI M., Magorrian, J., Pizzella, A, CORSINI, ENRICO MARIA, Sarzi, M., MORELLI, LORENZO, L. Coccato   +33 more
core   +6 more sources

Dark matter or modified dynamics?: hints from galaxy kinematics

Dark Matter in Astrophysics and Particle Physics, 2010
I show two observational projects I am involved in, which are aimed at understanding better the existence and nature of dark matter, and also aimed at testing alternatives to galactic dark matter such as MOND (Modified Newtonian Dynamics).
Gentile, Gianfranco
core   +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

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

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

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 "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

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

Structure and kinematics of edge-on galaxy discs - V. The dynamics of stellar discs [PDF]

Monthly Notices of the Royal Astronomical Society, 2005
Accepted for publication by Mon. Not.
Kregel, M, van der Kruit, P C, Freeman, Kenneth   +2 more
openaire   +5 more sources