Results 31 to 40 of about 1,242,731 (210)
Low-mass galaxy rotation curves that fail as dynamical mass tracers [PDF]
, 2023 It is routinely assumed that galaxy rotation curves are equal to their circular velocity curves (modulo some corrections) such that they are good dynamical mass tracers.
Oman, K. A., Downing, E. R.
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Galaxies with Declining Rotation Curves [PDF]
Astronomy Reports, 2020 A sample of 22 spiral galaxies compiled from published data is studied. The galaxy rotation curves pass through a maximum distance of more than $\sim 1$ kpc from the center with a subsequent decrease in the rotation velocity. The galaxy position in the Tully-Fisher (TF) and baryonic Tully-Fisher (BTF) diagrams show that the values of maximum rotation ...
Zobnina, D. I., Zasov, A. V.
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The galaxy rotation curves in the $f(R,T)$ modified gravity formalism [PDF]
, 2022 Astronomical data have shown that the galaxy rotation curves are mostly flat in the far distance of the galactic cores, which reveals the insufficiency of our knowledges about how gravity works in these regimes. In this paper we introduce a resolution of
Moraes, P. H. R. S., Shabani, H.
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Rotation Curves of High-Luminosity Spiral Galaxies and the Rotation Curve of our Galaxy [PDF]
Symposium - International Astronomical Union, 1979 Rotation curves of high luminosity spiral galaxies are flat, to distances as great as r=49 kpc. This implies a significant mass at large r. Rotational velocities increase about 20 km/s across a spiral arm, as predicted by the density wave theory. By analogy, it is suggested that our Galaxy has a flat rotation curve out to r∼60 kpc, with V ∼ constant at
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vcdisk.py: Rotation curves of thick galaxy disks
, 2022 vcdisk: Rotation curves of thick galaxy disks A minimal python module to solve Poisson's equation in a thick galactic disk. This is useful to compute the circular velocity on the disk plane of a galaxy with observed surface density profile and ...
Lorenzo Posti
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The Rotation Curves of Galaxies [PDF]
Symposium - International Astronomical Union, 1975 Currently available data on rotation curves are reviewed. For curves derived from optical measurements the distribution of the ratios: the last measured point on a rotation curve to the optical radius of the galaxy has a median value of if Reference Catalogue radii are used and if Holmberg radii are used.
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Imprints of Chameleon f(R) Gravity on Galaxy Rotation Curves [PDF]
, 2018 Current constraints on gravity are relatively weak on galactic and intergalactic scales. Screened modified gravity models can exhibit complex behaviour there without violating stringent tests of gravity within our Solar System.
Naik, Aneesh P. +3 more
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On the Keplerian Rotation Curves of Galaxies [PDF]
Publications of the Astronomical Society of Japan, 1997 We propose a criterion for examining whether or not the uncertainty of the outer rotation curves is sufficiently small to distinguish a Keplerian rotation curve from flat ones. We have applied this criterion to both Keplerian and non-Keplerian rotation curves so far obtained, and investigated their relative fraction.
Honma, Mareki, Sofue, Yoshiaki
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Galaxy rotation curves in the light of the Spinor Theory of Gravity
, 2021 We analyze the recently obtained static and spherically symmetric solutions of the Spinor Theory of Gravity (STG) which, in the weak field limit, presents an effective Newtonian potential that contains an extra logarithmic behavior.
da Silva Hartmann A. E. +5 more
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Rotation curve of our Galaxy and field galaxies [PDF]
Symposium - International Astronomical Union, 2004 We present a database of galaxies rotation curve (from Hα observations), including our Galaxy.
D. Russeil +3 more
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