Results 1 to 10 of about 113,110 (213)
Uncertainties in galaxy rotation curves [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 Assessing the likelihood that the rotation curve of a galaxy matches predictions from galaxy formation simulations requires that the uncertainties in the circular speed as a function of radius derived from the observational data be statistically robust ...
J. Sellwood, K. Spekkens, Carter Eckel
semanticscholar +4 more sources
On the Dwarf Galaxy Rotation Curve Diversity Problem [PDF]
Galaxies, 2018 In this paper, we show how baryonic physics can solve the problem of the striking diversity in dwarf galaxy rotation curves shapes. To this aim, we compare the distribution of galaxies of the SPARC sample, in the plane V2kpc-VRlast (V2kpc being the ...
Antonino Del Popolo +2 more
doaj +2 more sources
Signatures of Galaxy-Cluster Interactions: Spiral Galaxy Rotation Curve Asymmetry, Shape, and Extent [PDF]
, 2000 The environmental dependencies of the characteristics of spiral galaxy rotation curves are studied in this work. We use our large, homogeneously collected sample of 510 cluster spiral galaxy rotation curves to test the claim that the shape of a galaxy's ...
D. Dale +4 more
semanticscholar +6 more sources
Galaxy rotation curve from classical Cepheids [PDF]
Astronomische Nachrichten, 2018 The 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 ...
P. Gnaci'nski
semanticscholar +4 more sources
galkin: A new compilation of Milky Way rotation curve data [PDF]
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
doaj +2 more sources
On the Possibility of Applying the Quasi-Isothermal Stäckel’s Model to Our Galaxy
Open Astronomy, 2015 An earlier derived quasi-isothermal Stäckel’s model of mass distribution in stellar systems and the corresponding formula for space density are applied to our Galaxy. The model rotation curve is fitted to HI kinematical data.
Gromov A. O. +2 more
doaj +3 more sources
The Universal Galaxy Rotation Curve
The Astrophysical Journal, 1991 From the analysis of an extended set of selected galaxy rotation curves, it is found that for a given luminosity the rotation curves of spiral galaxies within the optical radius are a universal function. This result implies strong systematic variations of both the amplitude and the profil of the circular velocity with luminosity faint (bright) galaxies
M. Persic, P. Salucci
semanticscholar +3 more sources
Rotation Curve of the Galaxy [PDF]
Publications of the Astronomical Society of Japan, 1997 Reanalyzing the galactic HI survey data with two methods which make use of the geometry of the galactic disk, we explore the outer rotation curve. In addition to the derivation of the outer rotation curve, we investigate their uncertainties, which have not been established previously.
M. Honma, Y. Sofue
semanticscholar +2 more sources
The incorrect rotation curve of the Milky Way [PDF]
, 2015 In the fundamental quest of the rotation curve of the Milky Way, the tangent-point (TP) method has long been the simplest way to infer velocities for the inner, low latitude regions of the Galactic disk from observations of the gas component. We test the
L. Chemin, F. Renaud, C. Soubiran
semanticscholar +5 more sources
The Discrepancy in Galaxy Rotation Curves
, 2019 In this work we try a new approach for dealing with the discrepancy between observed galaxy rotation curves and theoretical predictions. This new approach does not involve any changes in the current fundamental laws of nature or the addition of dark ...
R. Gomel, Tomer Zimmerman
semanticscholar +3 more sources