Results 31 to 40 of about 43,402 (211)
Galaxy Collisions, Gas Stripping and Star Formation in the Evolution of Galaxies
, 2004 A review of gravitational and hydrodynamical processes during formation of clusters and evolution of galaxies is given. Early, at the advent of N-body computer simulations, the importance of tidal fields in galaxy encounters has been recognized.
Palous, Jan
core +1 more source
The Astrophysical Journal, 2023 The Milky Way (MW) stellar disk has both a thin and a thick component. The thin disk is composed mostly of younger stars (≲8 Gyr) with a lower abundance of α -elements, while the thick disk contains predominantly older stars (≳8–12 Gyr) with a higher α ...
Bethany R. Garver +4 more
doaj +1 more source
Forming Young Bulges within Existing Disks: Statistical Evidence for External Drivers
, 2003 Contrary to traditional models of galaxy formation, recent observations suggest that some bulges form within preexisting disk galaxies. Such late-epoch bulge formation within disks seems to be linked to disk gas inflow and central star formation, caused ...
Abraham R. G. +11 more
core +1 more source
Dynamical stability and galaxy evolution in LSB disk galaxies [PDF]
AIP Conference Proceedings, 1997 We demonstrate that, due to their low surface mass density and large dark matter content, LSB disks are quite stable against the growth of global bar modes. However, they may be only marginally stable against local disk instabilities. We simulate a collision between an LSB and HSB galaxy and find that, while the HSB galaxy forms a strong bar, the ...
Mihos, C., McGaugh, S. S., Blok, E. de
openaire +3 more sources
Supercomputer simulations of disk galaxies
Astronomical & Astrophysical Transactions, 2001 The time evolution of models for an isolated disk of highly flattened galaxies of stars is investigated by direct integration of the Newtonian equations of motion of N=30,000 identical stars over a time span of many galactic rotations. Certain astronomical implications of the simulations to actual disk-shaped (i.e.
Griv, Evgeny +4 more
openaire +2 more sources
The Physical Thickness of Stellar Disks to z ∼ 2
The Astrophysical Journal, 2023 In local disk galaxies such as our Milky Way, older stars generally inhabit a thicker disk than their younger counterparts. Two competing models have attempted to explain this result: one in which stars first form in thin disks that gradually thicken ...
Kathleen A. Hamilton-Campos +4 more
doaj +1 more source
, 2007 We present our new scheme for the classification of radial stellar surface brightness profiles for disk galaxies. We summarize the current theoretical attempts to understand their origin and give an example of an application by comparing local galaxies with their counterparts at high redshift (z~1).
Pohlen, M. +3 more
openaire +4 more sources
Population Synthesis Models for Normal Galaxies with Dusty Disks [PDF]
Journal of Astronomy and Space Sciences, 2003 To investigate the SEDs of galaxies considering the dust extinction processes in the galactic disks, we present the population synthesis models for normal galaxies with dusty disks. We use PEGASE (Fioc & Rocca-Volmerange 1997) to model them with standard
Kyung-Won Suh, Mi-Ryang Kim
doaj +1 more source
WHEN DID ROUND DISK GALAXIES FORM? [PDF]
The Astrophysical Journal, 2015 When and how galaxy morphology such as disk and bulge seen in the present-day universe emerged is still not clear. In the universe at $z\gtrsim 2$, galaxies with various morphology are seen, and star-forming galaxies at $z\sim2$ show an intrinsic shape of bar-like structure. Then, when did round disk structure form?
T. M. Takeuchi +3 more
openaire +2 more sources
Advanced Optical Materials, EarlyView.Structural color generation is an emerging field for digital display and printing applications. This report presents a novel truncated‐cone design and the first use of GaP sandwiched between two layers of TiO2, demonstrating ultra‐bright, tunable colors with a record color gamut.
Md Rumon Miah +2 more
wiley +1 more source