On the assembly of dwarf galaxies in clusters and their efficient formation of globular clusters

  title={On the assembly of dwarf galaxies in clusters and their efficient formation of globular clusters},
  author={Pouria Mistani and Laura V. Sales and Annalisa Pillepich and R{\'u}ben S{\'a}nchez-Janssen and Mark Vogelsberger and Dylan Nelson and Vicente Rodriguez-Gomez and Paul Torrey and Lars Hernquist},
  journal={Monthly Notices of the Royal Astronomical Society},
Galaxy clusters contain a large population of low mass dwarf elliptical galaxies whose exact origin is unclear: their colors, structural properties and kinematics differ substantially from those of dwarf irregulars in the field. We use the Illustris cosmological simulation to study differences in the assembly paths of dwarf galaxies (3e8 < M_*/M_sun < 1e10) according to their environment. We find that cluster dwarfs achieve their maximum total and stellar mass on average ~ 8 and ~ 4.5 Gyr ago… 
Evolution of star-forming dwarf galaxies in different environments
  • M. Grossi
  • Physics
    Proceedings of the International Astronomical Union
  • 2018
Abstract The ubiquity of star-forming dwarf galaxies (SFDG) in the local Universe allows us to trace their evolution in all type of environments, from voids to rich clusters. SFDGs in low-density
On the early evolution of Local Group dwarf galaxy types: star formation and supernova feedback
According to star formation histories (SFHs), Local Group dwarf galaxies can be broadly classified in two types: those forming most of their stars before z = 2 (fast) and those with more extended
ELVES II: Globular Clusters and Nuclear Star Clusters of Dwarf Galaxies: the Importance of Environment
We present the properties of the globular clusters (GCs) and nuclear star clusters (NSCs) of low-mass (105.5 < M ⋆ < 108.5 M ⊙) early-type satellites of Milky Way–like and small group hosts in the
Structure and morphology of the MATLAS dwarf galaxies and their central nuclei
We present a photometric study of the dwarf galaxy population in the low to moderate density environments of the MATLAS (Mass Assembly of early-Type gaLAxies with their fine Structures) deep
The stellar mass assembly of galaxies in the Illustris simulation: growth by mergers and the spatial distribution of accreted stars
We use the Illustris simulation to study the relative contributions of in situ star formation and stellar accretion to the build-up of galaxies over an unprecedentedly wide range of masses (M_* =
Globular cluster formation and evolution in the context of cosmological galaxy assembly: open questions
Some of the key open questions regarding the formation and evolution of globular clusters (GCs) during galaxy formation and assembly within a cosmological framework are discussed, with success in reproducing many of the observed GC-galaxy scaling relations.
An excess of globular clusters in Ultra-Diffuse Galaxies formed through tidal heating
To investigate the origin of elevated globular cluster abundances observed around Ultra- Diffuse Galaxies (UDGs), we simulate globular cluster populations hosted by UDGs formed through tidal heating.
Simulating the spatial distribution and kinematics of globular clusters within galaxy clusters in illustris
We study the assembly of globular clusters (GCs) in 9 galaxy clusters using the cosmological simulation Illustris. GCs are tagged to individual galaxies at their infall time. The tidal removal of
How nucleation and luminosity shape faint dwarf galaxies
We study the intrinsic shapes of a sample of over 400 quiescent galaxies in the cores of the Virgo and Fornax clusters with luminosities $10^{6} \leq L_{g}/L_{\odot} \leq 10^{8}$. Similar to
The Globular Cluster Systems of Ultra-diffuse Galaxies in the Coma Cluster
Ultra-diffuse galaxies (UDGs) are unusual galaxies with low luminosities, similar to classical dwarf galaxies, but sizes up to $\sim\!5$ larger than expected for their mass. Some UDGs have large


The Origin of Dwarf Ellipticals in the Virgo Cluster
We study the evolution of dwarf (LH < 109.6 LH☉) star-forming and quiescent galaxies in the Virgo Cluster by comparing their UV to radio centimetric properties to the predictions of multizone
Tidal stripping of globular clusters in a simulated galaxy cluster
Using a cosmological N-body numerical simulation of the formation of a galaxy cluster- sized halo, we analyze the temporal evolution of its globular cluster population. We follow the dynamical
The ACS Virgo Cluster Survey. XV. The Formation Efficiencies of Globular Clusters in Early-Type Galaxies: The Effects of Mass and Environment*
The fraction of stellar mass contained in globular clusters (GCs), also measured by number as the specific frequency, is a fundamental quantity that reflects both a galaxy's early star formation and
Tidal Effects in Clusters of Galaxies
High-redshift clusters of galaxies show an overabundance of spirals by a factor of 2-3 and the corresponding underabundance of S0 galaxies, relative to the nearby clusters. This morphological
Resonant stripping as the origin of dwarf spheroidal galaxies
Dwarf spheroidal galaxies are the most dark-matter-dominated systems in the nearby Universe and their origin is one of the outstanding puzzles of how galaxies form. Dwarf spheroidals are poor in gas
The colours of satellite galaxies in groups and clusters
Current models of galaxy formation predict satellite galaxies in groups and clusters that are redder than observed. We investigate the effect on the colours of satellite galaxies produced by the
The Globular Cluster Luminosity Function and Specific Frequency in Dwarf Elliptical Galaxies
The globular cluster luminosity function, specific globular cluster frequency, SN, specific globular cluster mass, TMP, and globular cluster mass fraction in dwarf elliptical galaxies are explored
The initial mass spectrum of old globular clusters in dwarf galaxies
We test whether the masses of old globular clusters (GCs) in dwarf galaxies are consistent with the same initial mass spectrum as young massive clusters (YMCs) in nearby star-forming galaxies. The
HST/ACS Direct Ages of the Dwarf Elliptical Galaxies NGC 147 and NGC 185
We present the deepest optical photometry for any dwarf elliptical (dE) galaxy based on Hubble Space Telescope ACS observations of the Local Group dE galaxies NGC 147 and NGC 185. The resulting F606W
Galaxy Populations and Evolution in Clusters. III. The Origin of Low-Mass Galaxies in Clusters: Constraints from Stellar Populations
Low-mass galaxies in nearby clusters are the most numerous galaxy type in the universe, yet their origin and properties remain largely unknown. To study basic questions concerning these galaxies we