Results 81 to 90 of about 3,622,393 (232)
Can Dwarf Spheroidal Galaxies Host a Central Black Hole?
The Astrophysical JournalWe construct mass models of Milky Way dwarf spheroidal galaxies to place constraints on the central black hole masses they can host. We model the galaxies as a three-component system consisting of the stars, dark matter halo, and a central black hole ...
K. Aditya, A. Mangalam
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Mapping the Active Galactic Nucleus Effects on the Stellar and Gas Properties of NGC 5806
The Astrophysical JournalIt is commonly accepted that active galactic nuclei (AGNs) have a strong impact upon the evolution of their host galaxies, but the processes by which they do so are not fully understood.
Sophie L. Robbins +2 more
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Deep imaging of the shell elliptical galaxy NGC3923 with MegaCam
, 2016 Context. The elliptical galaxy NGC 3923 is known to be surrounded by a number of stellar shells, probable remnants of an accreted galaxy. Despite its uniqueness, the deepest images of its outskirts come from the 1980s.
Bartošková, Kateřina +6 more
core +3 more sources
Action-angle Variables for Axisymmetric Potentials via Birkhoff Normalization
The Astrophysical JournalWe describe a method for calculating action-angle (AA) variables in axisymmetric galactic potentials using Birkhoff normalization, a technique from Hamiltonian perturbation theory.
Sam Hadden
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Gravitational theory of cosmology, galaxies and galaxy clusters
European Physical Journal C: Particles and Fields, 2020 A modified gravitational theory explains early universe and late time cosmology, galaxy and galaxy cluster dynamics. The modified gravity (MOG) theory extends general relativity (GR) by three extra degrees of freedom: a scalar field G, enhancing the ...
J. W. Moffat
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Possible Systematic Rotation in the Mature Stellar Population of a z = 9.1 Galaxy
The Astrophysical Journal Letters, 2022 We present new observations with the Atacama Large Millimeter/submillimeter Array for a gravitationally lensed galaxy at z = 9.1, MACS1149-JD1. [O iii ] 88 μ m emission is detected at 10 σ with a spatial resolution of ∼0.3 kpc in the source plane ...
Tsuyoshi Tokuoka +15 more
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Dynamical Modeling of SAURON Galaxies
, 2003 5 pages, 4 figures, LaTeX. Published in 2003, Carnegie Observatories Astrophysics Series, Vol. 1: Coevolution of Black Holes and Galaxies, ed. L. C. Ho (Pasadena: Carnegie Observatories, http://www.ociw.edu/ociw/symposia/series/symposium1/proceedings.html)
Cappellari, M +13 more
openaire +3 more sources
Dynamics of the Boxy Elliptical Galaxy NGC 1600
, 1998 We use three--integral models to infer the distribution function (DF) of the boxy E3-E4 galaxy NGC 1600 from surface brightness and line profile data on the minor and major axes.
Gerhard, Ortwin, Matthias, Michael
core +3 more sources
Internal dynamics of the galaxy cluster Abell 959
, 2008 The connection of cluster mergers with the presence of extended, diffuse radio sources in galaxy clusters is still being debated. In this paper we aim to obtain new insights into the internal dynamics of Abell 959, showing evidence of a diffuse radio ...
Barrena, R., Boschin, W., Girardi, M.
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On the Origin of the Variety of Velocity Dispersion Profiles of Galaxies
The Astrophysical JournalObserved and simulated galaxies exhibit a significant variation in their velocity dispersion profiles. We examine the inner and outer slopes of stellar velocity dispersion profiles using integral field spectroscopy data from two surveys, SAMI (for z < 0 ...
San Han +10 more
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