Results 41 to 50 of about 143,457 (288)
Galaxy modelling through stellar population synthesis
EPJ Web of Conferences, 2012 In recent years, models of the Galaxy based on the spirit of population synthesis have considerably helped to improve our knowledge on the Galaxy and its formation scenario.
Robin A.C.
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Tracing the External Origin of the AGN Gas Fueling Reservoir
Frontiers in Astronomy and Space Sciences, 2018 Near-infrared observations of the active galaxy MCG–6-30-15 provide strong evidence that its molecular gas fueling reservoir is of external origin. MCG–6-30-15 has a counter-rotating core of stars within its central 400 pc and a counter-rotating disc of ...
Sandra I. Raimundo
doaj +1 more source
Internal extinction of disc galaxies [PDF]
AIP Conference Proceedings, 1997 Traditionally, it is has been believed that extinction effects due to dust within the interstellar medium of external galaxies are rather small and can be largely ignored. Over the last 10 years however, considerable doubt has been cast over the evidence to support this comfortable idea and it became clear that a more detailed analysis was required ...
openaire +3 more sources
Only marginal alignment of disc galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2011 Testing theories of angular-momentum acquisition of rotationally supported disc galaxies is the key to understand the formation of this type of galaxies. The tidal-torque theory tries to explain this acquisition process in a cosmological framework and predicts positive autocorrelations of angular-momentum orientation and spiral-arm handedness on ...
Rene Andrae, Knud Jahnke
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Radial truncations in stellar discs in galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2004 Accepted for publication by Mon. Not.
M Kregel, P. C. van der Kruit
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An explicit representation for the axisymmetric solutions of the free Maxwell equations
Open Physics, 2020 Garay-Avendaño and Zamboni-Rached defined two classes of axisymmetric solutions of the free Maxwell equations. We prove that the linear combinations of these two classes of solutions cover all totally propagating time-harmonic axisymmetric free Maxwell ...
Arminjon Mayeul
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MHD disc winds can reproduce fast disc dispersal and the correlation between accretion rate and disc mass in Lupus [PDF]
, 2021 The final architecture of planetary systems depends on the extraction of angular momentum and mass-loss processes of the discs in which they form. Theoretical studies proposed that magnetized winds launched from the discs (MHD disc winds) could govern accretion and disc dispersal. In this work, we revisit the observed disc demographics in the framework
arxiv +1 more source
Counter-orbiting tidal debris as the origin of the MW DoS
EPJ Web of Conferences, 2012 The Milky Way satellite galaxies show a phase-space distribution that is not expected from the standard scenario of galaxy formation. This is a strong hint at them being of tidal origin, which would naturally explain their spacial distribution in a disc ...
Pawlowski M.S.
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Sersic properties of disc galaxy mergers [PDF]
Monthly Notices of the Royal Astronomical Society, 2006 Sersic parameters characterising the density profiles of remnants formed in collision-less disc galaxy mergers are obtained; no bulge is included in our simulations. For the luminous component we find that the Sersic index is n ~ (1.5,5.3) with ~ 3 +/- 1 and an effective radius of R_e ~ (1.6,12.9) kpc with ~ 5 +/- 3 kpc.
Hector Aceves +2 more
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The impact of cooling and feedback on disc galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 2002 We present detailed, analytical models for the formation of disc galaxies to investigate the impact that cooling and feedback have on their structural properties. In particular, we investigate which observables extracted directly from the models are best suited as virial mass estimators, and to what extent they allow the recovery of the model input ...
C Frank, van den Bosch
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