Results 51 to 60 of about 51,405 (265)
Galaxy rotation curve from classical Cepheids [PDF]
Astronomische Nachrichten, 2019 AbstractThe galaxy rotation curve is usually assumed to be flat. However, some galaxies have rotation curves that are lower than the flat rotation curve. In our galaxy, the Keplerian rotation of interstellar clouds in the galactic longitude l = 135° was observed. We use a kinematic approach to derive the rotational velocity of classical Cepheids.
+5 more sources
The AGN and Gas Disk in the Low Surface Brightness Galaxy PGC045080 [PDF]
, 2007 We present radio observations and optical spectroscopy of the giant low surface brightness (LSB) galaxy PGC 045080 (or 1300+0144). PGC 045080 is a moderately distant galaxy having a highly inclined optical disk and massive HI gas content. Radio continuum
Das, M. +5 more
core +2 more sources
galkin: A new compilation of Milky Way rotation curve data
SoftwareX, 2017 We present galkin, a novel compilation of kinematic measurements tracing the rotation curve of our Galaxy together with a tool to treat the data. The compilation is optimised to Galactocentric radii between 3 and 20 kpc and includes the kinematics of gas,
Miguel Pato, Fabio Iocco
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Dark Matter Dogma: A Study of 214 Galaxies
Galaxies, 2020 The aim of this paper is to test the need for non-baryonic dark matter in the context of galactic rotation and the apparent difference between distributions of galactic mass and luminosity.
Alan Sipols, Alex Pavlovich
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Light deflection angle through velocity profile of galaxies in f(R) model
European Physical Journal C: Particles and Fields, 2021 We explore a new realisation of the galactic scale dynamics via gravitational lensing phenomenon in power-law f(R) gravity theory of the type $$f(R)\propto R^{1+\delta }$$ f ( R ) ∝ R 1 + δ with ...
Vipin Kumar Sharma +2 more
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Modeling of Spiral Structure in a Multi-Component Milky Way-Like Galaxy
Galaxies, 2021 Using recent observational data, we construct a set of multi-component equilibrium models of the disk of a Milky Way-like galaxy. The disk dynamics are studied using collisionless-gaseous numerical simulations, based on the joined integration of the ...
Sergey Khrapov +2 more
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Mass Distribution in Rotating Thin-Disk Galaxies According to Newtonian Dynamics
Galaxies, 2014 An accurate computational method is presented for determining the mass distribution in a mature spiral galaxy from a given rotation curve by applying Newtonian dynamics for an axisymmetrically rotating thin disk of finite size with or without a central ...
James Q. Feng, C. F. Gallo
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Imprint of Pressure on Characteristic Dark Matter Profiles: The Case of ESO0140040
Galaxies, 2020 We investigate the dark matter distribution in the spiral galaxy ESO0140040, employing the most widely used density profiles: the pseudo-isothermal, exponential sphere, Burkert, Navarro-Frenk-White, Moore and Einasto profiles.
Kuantay Boshkayev +4 more
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On the density within the dark-matter core in our galaxy [PDF]
Serbian Astronomical Journal, 2007 Assuming that the disc of our Galaxy, the Milky Way, obeys the classical exponential law, that it is maximal and the Sun is rather far from the maximum of its circular velocity, one finds that, most likely, the galactic corona (subsystem containing the ...
Ninković S.
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An Updated View of the Milky Way from Maser Astrometry
Universe, 2022 Astrometric observations of maser sources in the Milky Way, using the Very Long Baseline Interferometry (VLBI) technique, have been exploited to determine the spiral structure of our Galaxy. Several major spiral arms have now been pinpointed in the first
Katharina Immer, Kazi L. J. Rygl
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