Results 1 to 10 of about 272,847 (89)
Rotation Curves of Spiral Galaxies [PDF]
Ann.Rev.Astron.Astrophys. 39 (2001) 137-174, 2000 Rotation curves of spiral galaxies are the major tool for determining the distribution of mass in spiral galaxies. They provide fundamental information for understanding the dynamics, evolution and formation of spiral galaxies. We describe various methods to derive rotation curves, and review the results obtained.
Yoshiaki Sofue, Vera C. Rubin
arxiv +6 more sources
Rotation curves of luminous spiral galaxies [PDF]
arXiv, 2011 We have investigated the stellar light distribution and the rotation curves of high-luminosity spiral galaxies in the local Universe. The sample contains 30 high-quality extended H alpha and HI rotation curves. The stellar disk scale-length of these objects was measured or taken from the literature.
Ana Babić +5 more
arxiv +6 more sources
Central Rotation Curves of Spiral Galaxies [PDF]
The Astrophysical Journal, 1999 We present high-resolution central-to-outer rotation curves for Sb, SBb, Sc, and SBc galaxies. We discuss their general characteristics, particularly their central behavior, as well as dependencies on morphological types, activity, and peculiarity. The rotation curves generally show a steep nuclear rise, and high-velocity central rotation, followed by ...
Y. Tutui +6 more
arxiv +6 more sources
Central Rotation Curves of Galaxies [PDF]
arXiv, 2000 We emphasize the use of high-resolution CO line observations to derive central rotation curves of galaxies. We present an example for high-resolution interferometer observations of NGC 3079, and discuss the PV diagram and derived rotation curve. The CO central rotation curves are combined with the outer curves from \ha and HI-line observations to ...
arxiv +3 more sources
Towards the explanation of flatness of galaxies rotation curves [PDF]
Universe 2022, 8(12), 632, 2023 We suggest a new explanation of flatness of galaxies rotation curves without invoking dark matter. For this purpose a new gravitational tensor field is introduced in addition to the metric tensor.
arxiv +4 more sources
Uncertainties in galaxy rotation curves [PDF]
Monthly Notices of the Royal Astronomical Society, 2021 ABSTRACT 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. Few uncertainties presented in the literature meet this requirement. In this
Carter S. Eckel +2 more
openaire +3 more sources
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 ...
D. I. Zobnina, A. V. Zasov, A. V. Zasov
openaire +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.
Mareki Honma, Yoshiaki Sofue
openaire +2 more sources
HI Rotation Curves of Galaxies [PDF]
Symposium - International Astronomical Union, 1987 The observational evidence on the discrepancy between the mass distribution in galaxies derived from HI rotation curves and that derived from the distribution of light is reviewed. In the outer parts the discrepancy is such that in some galaxies there is at least three times as much dark matter as luminous matter.
SANCISI, R, VANALBADA, TS
openaire +2 more sources
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.
Mareki Honma, Yoshiaki Sofue
openaire +3 more sources