Results 31 to 40 of about 146,314 (245)
Internal Secular Evolution in Disk Galaxies: The Growth of Pseudobulges
, 2007 Observational and theoretical evidence that internal, slow ("secular") evolution reshapes galaxy disks is reviewed in Kormendy & Kennicutt (2004, ARAA, 42, 603). This update has three aims.
Athanassoula +14 more
core +1 more source
The Formation and Evolution of Field Massive Galaxies [PDF]
Astrophysics and Space Science, 2003 The problem of the formation and evolution of field massive galaxies is briefly reviewed from an observational perspective. The motivations and the characteristics of the K20 survey are outlined. The redshift distribution of Ks<20 galaxies, the evolution of the rest-frame Ks-band luminosity function and luminosity density to z=1.5, the nature and ...
openaire +4 more sources
New chemical evolution analytical solutions including environment effects
, 2015 In the last years, more and more interest has been devoted to analytical solutions, including inflow and outflow, to study the metallicity enrichment in galaxies.
Spitoni, E.
core +1 more source
The Thick Disk in the Galaxy NGC 4244 from S^4G Imaging [PDF]
, 2010 If thick disks are ubiquitous and a natural product of disk galaxy formation and/or evolution processes, all undisturbed galaxies that have evolved during a significant fraction of a Hubble time should have a thick disk. The late-type spiral galaxy NGC
Athanassoula, E. +18 more
core +5 more sources
Formation and Evolution of Disk Galaxies [PDF]
Symposium - International Astronomical Union, 1999 We have developed a semianalitical approach to study galaxy formation and evolution in the cosmological context. Disk galaxies (dark matter halo+luminous disk) are considered to be formed through an extended process of gravitational collapse, whose character is determined by the statistical properties of the density fluctuation field assumed here to be
C. Firmani, Vladimir Avila-Reese
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Star Formation Quenching in Quasar Host Galaxies
Frontiers in Astronomy and Space Sciences, 2017 Galaxy evolution is likely to be shaped by negative feedback from active galactic nuclei (AGN). In the whole range of redshifts and luminosities studied so far, galaxies hosting an AGN frequently show fast and extended outflows consisting in both ionized
Stefano Carniani, Stefano Carniani
doaj +1 more source
Galaxy Formation and Chemical Evolution
International Journal of Astronomy and Astrophysics, 2014 14 pages, 5 ...
openaire +4 more sources
Galaxy formation and evolution: low-surface-brightness galaxies [PDF]
Monthly Notices of the Royal Astronomical Society, 1998 We investigate in detail the hypothesis that low surface brightness galaxies (LSB) differ from ordinary galaxies simply because they form in halos with large spin parameters. We compute star formation rates using the Schmidt law, assuming the same gas infall dependence on surface density as used in models of the Milky Way.
Raul Jimenez +3 more
openaire +3 more sources
, 2011 Some of the extremely metal-poor Blue Compact Dwarf galaxies (XBCDs) in the nearby universe form galaxy pairs with remarkably similar properties. This fact points to an intriguing degree of synchronicity in the formation history of these binary dwarf ...
H-H Loose +12 more
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Stochastic 2-D Models of Galaxy Disk Evolution. The Galaxy M33
Open Astronomy, 2014 We have developed a fast numerical 2-D model of galaxy disk evolution (resolved along the galaxy radius and azimuth) by adopting a scheme of parameterized stochastic self-propagating star formation.
Mineikis T., Vansevičius V.
doaj +1 more source