Results 31 to 40 of about 3,251,679 (315)
Kinematical Fluctuations Vary with Galaxy Surface Mass Density
The Astrophysical Journal Letters, 2023 The Galaxy inner parts are generally considered to be optically symmetric, as well as kinematically symmetric for most massive early-type galaxies. At the lower-mass end, many galaxies contain lots of small patches in their velocity maps, causing their ...
Ze-Hao Zhong +3 more
doaj +1 more source
Dynamics of the radio galaxy 3C 449 [PDF]
, 1998 The definitive version is available at www.blackwell-synergy.com. Copyright Blackwell Publishing DOI : 10.1046/j.1365-8711.1998.01535.xWe present ROSAT PSPC observations of the twin-jet radio galaxy 3C449.
Birkinshaw, M. +2 more
core +2 more sources
Planck view of the M82 galaxy [PDF]
, 2015 Planck data towards the galaxy M82 are analyzed in the 70, 100 and 143 GHz bands. A substantial north-south and East-West temperature asymmetry is found, extending up to 1 degree from the galactic center.
De Paolis, F. +10 more
core +1 more source
The Stability of Some Galaxy Disks is Still Perplexing
The Astrophysical Journal, 2023 The problem of how some disk galaxies avoid forming bars remains unsolved. Many galaxy models having reasonable properties continue to manifest vigorous instabilities that rapidly form strong bars and no widely accepted idea has yet been advanced to ...
J. A. Sellwood, R. G. Carlberg
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Formation of Transitional cE/UCD Galaxies through Massive/Dwarf Disc Galaxy Mergers
Galaxies, 2023 The dynamics of the merger of a dwarf disc galaxy with a massive spiral galaxy of the Milky Way type were studied in detail. The remnant of such interaction after numerous crossings of the satellite through the disc of the main galaxy was a compact ...
Alexander V. Khoperskov +2 more
doaj +1 more source
No need for dark matter: resolved kinematics of the ultra-diffuse galaxy AGC 114905 [PDF]
, 2021 We present new H i interferometric observations of the gas-rich ultra-diffuse galaxy AGC 114905, which previous work, based on low-resolution data, identified as an outlier of the baryonic Tully-Fisher relation.
P. E. M. Piña +5 more
semanticscholar +1 more source
Influence of Magnetic Fields on the Gas Rotation in the Galaxy NGC 6946
The Astrophysical Journal, 2023 Magnetic fields can play an important role in the energy balance and formation of gas structures in galaxies. However, their dynamical effect on the rotation curve of galaxies is immensely unexplored.
M. Khademi, S. Nasiri, F. S. Tabatabaei
doaj +1 more source
Elliptical Galaxy Dynamics [PDF]
, 1998 ,(a b)/a with a and b the major- and minor-axis lengths. Hubble understood that the observed ellipticity was only a lower limit to the true elongation because of the unknown orientation of a galaxy’s “polar axis”; he called this uncertainty “serious, but
D. Merritt
semanticscholar +1 more source
The impact of galaxy harassment on the globular cluster systems of early-type cluster dwarf galaxies
, 2012 The dynamics of globular cluster systems (GCSs) around galaxies are often used to assess the total enclosed mass, and even to constrain the dark matter distribution.
Aguerri, J. A. L. +5 more
core +1 more source
Refracted Gravity Solutions from Small to Large Scales
AstronomyIf visible matter alone is present in the Universe, general relativity (GR) and its Newtonian weak field limit (WFL) cannot explain several pieces of evidence, from the largest to the smallest scales.
Valentina Cesare
doaj +1 more source