correlation is found between the outer gradient of the rotation curve and the galaxy's distance from the centre of the cluster, in the sense that the inner galaxies tend to have falling rotation curves while the outer galaxies, and field galaxies, tend to have flat or rising rotation curves....
Through the Spectroscopy (nearby galaxies – spatially resolved the galaxy), we produce the rotation curve. As mentioned above, we see that the rotation curve is flat at the outer regions, i.e. the things are moving fast in the outer regions, which is generally not expected to be in this...
Through the use of such a model, I reproduce the correlation between galaxy inclination and the slope of its inner rotation curve without having to resort to excessively high optical depth.Misiriotis, A.ASTRONOMY AND ASTROPHYSICS -BERLIN-
the gravitational force calculated from the observed distribution of luminous material and gas by use of the simple MOND formula can account for the overall shape and amplitude of these 22 rotation curves, and in some cases, the predicted curve agrees with the observed rotation curve in detail. ...
Further, the HI column density drops precipitously near the center of the galaxy. Closed contours in the velocity field suggest either that the system is warped, or that the rotation curve declines. The velocity dispersion is approximately constant throughout the system, with a median value of ...
This is the first time a "rotation curve" has been observed in such a distant galaxy by means of infrared observations, allowing a very detailed dynamical study. Other observations by the team concern a pair of distant, interacting galaxies that were also found to possess comparably high masses...
The mass of the Galaxy can be determined from the knowledge of the distance of the sun from the galactic center (determined from mass distributions and from the brightness of variable stars in globular clusters) and from the shape of the rotation curve as a function of distance from the ...
Since the rotation curve and thus radial epicyclic frequency are rather similar in all our considered models, the MOND phantom disc could have important implications for the overall stability. Its importance would be much greater still for a galaxy with lower Σb (Milgrom 1989)....
We investigate whether the velocity resolution of the HI rotation curves obtained previously is high enough to detect the declining part of the rotation curve when they are declining. We find that more than half of the HI rotation curves obtained with sufficiently high velocity resolution are ...
flatgalaxy. •Severalrotationcurveofedge-ongalaxiesappearsignsoflargeextinc- tionintheplaneofthegalaxyspiralarms,whichisintersected by the line of sight at small angles. • Nevertheless, the galaxies under study show a close correlation between the rotation amplitudes, as inferred from the H α...