Results 71 to 80 of about 146,314 (245)

The formation and evolution of low-surface-brightness galaxies [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2019
Our statistical understanding of galaxy evolution is fundamentally driven by objects that lie above the surface-brightness limits of current wide-area surveys (mu ~ 23 mag arcsec^-2). While both theory and small, deep surveys have hinted at a rich population of low-surface-brightness galaxies (LSBGs) fainter than these limits, their formation remains ...
Clotilde Laigle   +10 more
openaire   +4 more sources

Overmerging and M/L ratios in phenomenological galaxy formation models

open access: yes, 1999
We show that the discrepancy between the Tully-Fisher relation and the luminosity function predicted by most phenomenological galaxy formation models is mainly due to overmerging of galaxy haloes.
Jimenez, Raul   +2 more
core   +1 more source

An Hα Cloud in the H I Tail: Recent Star Formation in the Outskirts of NGC 4258 Revealed by Nanshan 1 m Telescope

open access: yesThe Astronomical Journal
We present first-light deep H α imaging taken with the Nanshan 1 m wide-field telescope on the local galaxy NGC 4258, alongside archival data from Hubble Space telescope (HST), Westerbork Synthesis Radio Telescope, and The Dark Energy Camera Legacy ...
Cheng Cheng   +14 more
doaj   +1 more source

Formation and Dynamical Evolution of Galaxies and of their Components

open access: yesAIP Conference Proceedings, 2005
8 pages, 8 figures. Invited review to the Conference on Planetary Nebulae as Astronomical Tools (Gdansk, Poland, 28 June-2 July 2005)
openaire   +3 more sources

Star Formation and Magnetic Field Amplification due to Galactic Spirals

open access: yesThe Astrophysical Journal
We use global MHD galaxy simulations to investigate the effects of spiral arms on the evolution of magnetic fields and star formation within a self-regulated interstellar medium.
Hector Robinson   +3 more
doaj   +1 more source

Deep MOS Spectroscopy of NGC 1316 Globular Clusters

open access: yesGalaxies, 2017
The giant elliptical galaxy NGC 1316 is the brightest galaxy in the Fornax cluster, and displays a number of morphological features that might be interpreted as an intermediate age merger remanent (∼3 Gyr).
Leandro A. Sesto   +3 more
doaj   +1 more source

The evolution of the colour-magnitude relation and of the star formation activity in galaxy clusters since z~0.8

open access: yes, 2008
We present recent results on the evolution of the colour-magnitude relation and of the star formation activity in galaxy clusters since z~0.8. Results are based on the ESO Distant Cluster Survey (EDisCS) - an ESO large programme aimed at the study of ...
De Lucia, Gabriella   +1 more
core  

Quantifying Bursty Star Formation in Dwarf Galaxies

open access: yesThe Open Journal of Astrophysics
Dwarf galaxy star formation histories are theoretically expected to be bursty, potentially leaving distinct imprints on their chemical evolution. We propose that episodic starbursts with quiescent periods longer than ~100 Myr should lead to discontinuous
Yuan-Sen Ting, Alexander Ji
doaj   +1 more source

Quantifying the Velocity Anisotropy Profile of Galaxy Clusters Using the Uchuu Cosmological Simulation

open access: yesThe Astrophysical Journal
Galaxy clusters are powerful laboratories for studying both cosmic structure formation and galaxy evolution. We present a comprehensive analysis of the velocity anisotropy profile, β ( r ), in galaxy clusters using the Uchuu-UniverseMachine mock galaxy ...
Mohamed H. Abdullah   +6 more
doaj   +1 more source

PANCAKE: A Python-based Numerical Color–Magnitude Diagram Analysis Package

open access: yesThe Astrophysical Journal Supplement Series
Stellar populations serve as a fossil record of galaxy formation and evolution, providing crucial information about the history of star formation and galaxy evolution.
Yun Zheng   +13 more
doaj   +1 more source

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