Results 21 to 30 of about 67,629 (216)
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 ...
Adabi M. G. +16 more
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The introduction of baryon string in the model of spiral galaxies structure [PDF]
Компьютерные исследования и моделирование, 2012 It proposes a new alternative approach to explain the flat spectrum of the velocity for stars orbital motion on the periphery of spiral galaxies. In particular, that velocity significant excess of speed calculated according to the virial theorem.
A. V. Koganov, Vladimir G. Krechet
doaj +1 more source
ON THE FRACTION OF BARRED SPIRAL GALAXIES [PDF]
The Astrophysical Journal, 2010 We investigate the stellar masses of strongly barred spiral galaxies. Our analysis is based on a sample of ~14000 visually-classified nearby galaxies given in Nair & Abraham 2010(a). The fraction of barred spiral galaxies is found to be a strong function of stellar mass and star formation history, with a minimum near the characteristic mass at ...
Nair, Preethi B., Abraham, Roberto G.
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Isolated Galaxies versus Interacting Pairs with MaNGA
Galaxies, 2015 We present preliminary results of the spectral analysis on the radial distributions of the star formation history in both a galaxy merger and a spiral isolated galaxy observed with MaNGA.
María del Carmen Argudo Fernández +5 more
doaj +1 more source
A constant dark matter halo surface density in galaxies [PDF]
, 2009 We confirm and extend the recent finding that the central surface density r_0*rho_0 galaxy dark matter halos, where r_0 and rho_0 are the halo core radius and central density, is nearly constant and independent of galaxy luminosity. Based on the co-added
Donato, F. +8 more
core +3 more sources
The disc mass of spiral galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2008 5 pages, 4 Figures accepted to ...
Salucci, Paolo +2 more
openaire +3 more sources
ULTRALIGHT SCALARS AND SPIRAL GALAXIES [PDF]
Modern Physics Letters A, 2001 We study some possible astrophysical implications of a very weakly coupled ultralight dilaton-type scalar field. Such a field may develop an (approximately stable) network of domain walls. The domain wall thickness is assumed to be comparable with the thickness of the luminous part of the spiral galaxies. The walls provide trapping for galactic matter.
Dvali, Gia +2 more
openaire +2 more sources
Breaking the Disk/Halo Degeneracy with Gravitational Lensing [PDF]
, 1999 The degeneracy between the disk and the dark matter contribution to galaxy rotation curves remains an important uncertainty in our understanding of disk galaxies.
Andreas O. Jaunsen +18 more
core +4 more sources
Spiral Galaxies as Chiral Objects? [PDF]
Astrophysics and Space Science, 2006 Spiral galaxies show axial symmetry and an intrinsic 2D-chirality. Environmental effects can influence the chirality of originally isolated stellar systems and a progressive loss of chirality can be recognised in the Hubble sequence. We point out a preferential modality for genetic galaxies as in microscopic systems like aminoacids, sugars or neutrinos.
CAPOZZIELLO, SALVATORE, LATTANZI A.
openaire +5 more sources
Nuclear Spirals in Galaxies [PDF]
, 2008 6 pages, 4 figures, to appear in ""Mapping the Galaxy and Nearby Galaxies", Eds. K. Wada and F.
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