نتایج جستجو برای: galaxy evolution

تعداد نتایج: 389980  

Journal: :Monthly Notices of the Royal Astronomical Society 2018

Journal: :Symposium - International Astronomical Union 1985

Journal: :Annual Review of Astronomy and Astrophysics 2014

Journal: :Astronomy and Astrophysics 2010

Journal: :Proceedings of the International Astronomical Union 2012

Journal: :The Astrophysical Journal 2021

Lyman-$\alpha$ (Ly$\alpha$) emitting galaxies are powerful tools to probe the late stages of cosmic reionization. The observed sudden drop in Ly$\alpha$ fraction at $z>6$ is often interpreted as a sign reionization, since intergalactic medium (IGM) more neutral and opaque photons. Crucially, this interpretation observations only valid under assumption that themselves experience minimal evolutio...

2001
H. Mathis G. Lemson V. Springel G. Kauffmann S. D. M. White A. Eldar

We simulate the formation and evolution of the local galaxy population starting from initial conditions with a smoothed linear density field which matches that derived from the IRAS 1.2 Jy galaxy survey. Our simulations track the formation and evolution of all dark matter haloes more massive than 1011M⊙ out to a distance of 8000 km s −1 from the Milky Way. We implement prescriptions similar to ...

1999
Eva K. Grebel

Star clusters are found in ∼40% of the Local Group galaxies. Their properties are reviewed. The impact of galaxy environment on the evolution and survival of star clusters is discussed. Possible evidence for cluster formation triggered by galaxy interactions, gradients in cluster size, metallicity and stellar content with galactocentric radius and variations as a function of galaxy type are bri...

1996
Mark Dickinson

High redshift galaxy clusters have traditionally been a fruitful place to study galaxy evolution. I review various search strategies for finding clusters at z > 1. Most efforts to date have concentrated on the environments of distant AGN. I illustrate these with data on the cluster around 3C 324 (z = 1.2) and other, more distant systems, and discuss possibilities for future surveys with large t...

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