Results 71 to 80 of about 1,664 (106)

The empirical laws of galaxy dynamics: from gas kinematics to weak lensing

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 ...
Lelli, Federico, Mistele, Tobias, McGaugh, Stacy S., Schombert, James M., Li, Pengfei   +4 more
openaire   +2 more sources

Kinematical small-scale fluctuations do not affect the measurement of the dynamical mass of galaxies

Monthly Notices of the Royal Astronomical Society
ABSTRACT The stellar kinematics of low-mass galaxies are usually observed to be very unsmooth with significant kinematical fluctuations in small scales, which cannot be consistent with the projected centrosymmetric stellar kinematics obtained from commonly used dynamical models.
Zehao Zhong, Gang Zhao
openaire   +2 more sources

Galaxies: kinematics to dynamics [PDF]

, 2001
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Velocity fields in late-type galaxies from H-alpha Fabry-Perot interferometry. II - Kinematics and dynamics of the SD spiral NGC 7793

, 1980
E. Davoust, G. Vaucouleurs
semanticscholar   +1 more source

The Structure and Dynamics of Ringed Galaxies. III. Surface Photometry and Kinematics of the Ringed Nonbarred Spiral NGC 7531

, 1987
R. Buta
semanticscholar   +1 more source

Photometry, Kinematics and Dynamics of the Magellanic-Type Barred Spiral Galaxy NGC 4027 [PDF]

Monthly Notices of the Royal Astronomical Society, 1968
Kenneth C. Freeman, Antoinette de Vaucouleurs, Gerard de Vaucouleurs   +2 more
openaire   +2 more sources

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Kinematics and Dynamics of Galaxies in Compact Groups for a Sample of 31 Groups

2002
A long-term program based on Fabry-Perot Ha velocity field data of compact groups has been undertaken in order to analyse the kinematics of the compact group galaxies and the extent of their dark halos. The data are taken at the ESO and the CFH 3.6 m telescopes.
Amram, Philippe, Mendes de Oliveira, Claudia, Plana, Henri, Balkowski, Chantal, Boulesteix, J., Carignan, Claude   +5 more
openaire   +4 more sources

Internal Kinematics and Dynamics of Galaxies

1983
E. Athanassoula
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Stellar dynamics and dark matter in Local Group dwarf galaxies

Nature Astronomy, 2022
When interpreted within the standard framework of Newtonian gravity and dynamics, the kinematics of stars and gas in dwarf galaxies reveals that most of these systems are completely dominated by their dark matter halos.
G. Battaglia, C. Nipoti
semanticscholar   +1 more source

Gas dynamics in dwarf galaxies as testbeds for dark matter and galaxy evolution

Nature Astronomy, 2022
Dwarf galaxies are ideal laboratories to test dark matter models and alternative theories because their dynamical mass (from observed kinematics) largely outweighs their baryonic mass (from gas and stars).
F. Lelli
semanticscholar   +1 more source