Results 131 to 140 of about 51,405 (265)

Cold gas disks in main-sequence galaxies at cosmic noon: Low turbulence, flat rotation curves, and disk-halo degeneracy [PDF]

open access: diamond, 2023
Federico Lelli   +8 more
openalex   +3 more sources

Raising galaxy rotation curves via dressing

open access: yesPhysical Review D
We present a manifestly diffeomorphism-invariant simple model of galaxy dynamics obtained by applying the Dressing Field Method (DFM) to a general-relativistic system comprising the metric and four scalar fields, phenomenologically representing the four-velocity of a cosmological fluid or dust field.
J. François, L. Ravera
openaire   +2 more sources

Rotation Curve with MOND and Dark Matter Halo profile for ESO138-G014 [PDF]

open access: yes, 2014
This paper is devoted to solve the galactic rotation problem for ESO138-G014 galaxy based on two theories: dark matter and Modified Newtonian Dynamics. Here we did the rotation curve analysis with two possible choices for the dark matter density profile,
Abidin, Zamri Zainal   +3 more
core  

Physical Parameters of Late Type Spiral Galaxies I-Mass and Luminosity of NGC 6946 [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1985
Using Brandt model the mass distribution of the late type spiral galaxy NGC 6946 was derived, and the total mass was reestimated to understand the M/L ratio of this galaxy. Two kinds of the rotation curve with shape parameter n = 1 and 3.3 were examined.
Sug-Whan Kim, Mun-Suk Chun
doaj  

Dark Matter and Rotation Curves of Stars in Galaxies [PDF]

open access: green, 2001
Ernst Schmützer
openalex   +1 more source

Spectroscopic Studies of Starburst Galaxies; the Dynamical Structure of Blue Compact Dwarf Galaxy Haro 6 [PDF]

open access: yesJournal of Astronomy and Space Sciences, 1995
We carried out photometric and spectroscopic observations of the blue compact dwarf galaxy Haro 6 in the Virgo Cluster of Galaxies. The long-slit spectroscopy was employed at three position angles, ϕ = 0°, ϕ = 30°, and ϕ = 120° CCD camera mounted on the ...
Mun-Suk Chun   +2 more
doaj  

An Equilibrium Model of the Galaxy Determined by Element Abundance Gradients

open access: yesThe Astrophysical Journal
We present a method to determine the gravitational potential of the Milky Way from measurements of the locations, velocities, and element abundances of stars in the Galactic disk.
Lawrence M. Widrow   +4 more
doaj   +1 more source

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