Results 111 to 120 of about 58,632 (214)

Stellar populations of seven early-type dwarf galaxies and their nuclei

open access: yes, 2009
Dwarf galaxies are the numerically dominating population in the dense regions of the universe. Although they seem to be simple systems at first view, the stellar populations of dwarf elliptical galaxies (dEs) might be fairly complex. Nucleated dEs are of
Babul   +13 more
core   +1 more source

How non-linear scaling relations unify dwarf and giant elliptical galaxies

open access: yes, 2010
Dwarf elliptical galaxies are frequently excluded from bright galaxy samples because they do not follow the same linear relations in diagrams involving effective half light radii R_e or mean effective surface brightnesses _e.
A.W. Graham   +48 more
core   +1 more source

Euclid preparation

open access: yesAstronomy & Astrophysics
Local Universe dwarf galaxies can serve as both cosmological and mass assembly probes. Deep surveys have enabled the study of these objects down to the low surface brightness (LSB) regime.
Urbano M.   +314 more
doaj   +1 more source

Dark-matter-free Dwarf Galaxy Formation at the Tips of the Tentacles of Jellyfish Galaxies

open access: yesThe Astrophysical Journal
When falling into a galaxy cluster, galaxies experience a loss of gas due to ram pressure stripping. In particular, disk galaxies lose gas from their disks, and very large tentacles of gas can be formed.
V. Lora   +4 more
doaj   +1 more source

Mass growth of massive quiescent galaxies in the Illustris TNG simulation

open access: yesActa Polytechnica
Interactions between galaxies could potentially lead to increased rates of star formation within these galaxies, potentially leading to the occurrence of multiple core-collapse supernovae and the ejection of hot gas.
Bendegúz Koncz, András Péter Joó
doaj   +1 more source

Angular Momentum in Dwarf Galaxies

open access: yesOpen Astronomy, 2014
AbstractWe study the “angular momentum catastrophe” in the framework of interaction among baryons and dark matter through dynamical friction. By means of Del Popolo (2009) model we simulate 14 galaxies similar to those investigated by van den Bosch, Burkert and Swaters (2001), and calculate the distribution of their spin parameters and the angular ...
openaire   +3 more sources

CROCODILE-DWARF: Assembly and Kinematics of Field Dwarf Galaxies with GADGET4-OSAKA

open access: yesThe Astrophysical Journal
We present results from CROCODILE-DWARF, a new suite of cosmological zoom-in hydrodynamic simulations of isolated field dwarf galaxies with halo masses of ∼10 ^10 M _⊙ at z = 0, performed with the gadget 4 -osaka code.
Kazuki Tomaru   +3 more
doaj   +1 more source

The Star Formation History in Local Group Galaxies. I. Ten Dwarf Galaxies

open access: yesThe Astrophysical Journal
The star formation histories (SFHs) of galaxies provide valuable insights into galaxy evolution and stellar physics. Understanding the SFHs enables the study of chemical enrichment of galaxies, star formation triggered by interactions, and the behavior ...
Yi Ren   +4 more
doaj   +1 more source

A Search for Faint Resolved Galaxies Beyond the Milky Way in DES Year 6: A New Faint, Diffuse Dwarf Satellite of NGC 55

open access: yesThe Astrophysical Journal
We report results from a systematic wide-area search for faint dwarf galaxies at heliocentric distances from 0.3 to 2 Mpc using the full 6 yr of data from the Dark Energy Survey (DES).
M. McNanna   +66 more
doaj   +1 more source

Extended Stellar Populations in Ultrafaint Dwarf Galaxies

open access: yesThe Astronomical Journal
The possible existence of stellar halos in low-mass galaxies is being intensely discussed nowadays after some recent discoveries of stars located in the outskirts of dwarf galaxies of the Local Group.
Elisa A. Tau   +2 more
doaj   +1 more source

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