Independent Evidence for Earlier Formation Epochs of Fossil Groups of Galaxies through the Intracluster Light: The Case for RX J100742.53+380046.6

@article{Dupke2022IndependentEF,
  title={Independent Evidence for Earlier Formation Epochs of Fossil Groups of Galaxies through the Intracluster Light: The Case for RX J100742.53+380046.6},
  author={Renato de Alencar Dupke and Yolanda Jim{\'e}nez-Teja and Yuanyuan Su and Eleazar R. Carrasco and Anton M. Koekemoer and Rebeca M. Batalha and Lucas E. Johnson and Jimmy A. Irwin and Eric Miller and Paola Dimauro and N{\'i}colas O. L. de Oliveira and Jos{\'e} M. V{\'i}lchez},
  journal={The Astrophysical Journal},
  year={2022},
  volume={936}
}
Fossil groups (FG) of galaxies still present a puzzle to theories of structure formation. Despite the low number of bright galaxies, they have relatively high velocity dispersions and ICM temperatures often corresponding to cluster-like potential wells. Their measured concentrations are typically high, indicating early formation epochs as expected from the originally proposed scenario for their origin as being older undisturbed systems. This is, however, in contradiction with the typical lack… 

References

SHOWING 1-10 OF 81 REFERENCES

Intracluster light properties in a fossil cluster at z = 0.47

Galaxy clusters contain a diffuse stellar component outside the cluster’s galaxies, which is observed as faint intracluster light (ICL). Using Gemini/GMOS-N deep imaging and multiobject

The LX—T relation and intracluster gas fractions of X-ray clusters

We re-examine the X-ray luminosity–temperature relation using a nearly homogeneous data set of 24 clusters selected for statistically accurate temperature measurements and absence of strong cooling

Star-formation efficiency and metal enrichment of the intracluster medium in local massive clusters of galaxies

We have investigated the baryon-mass content in a subsample of 19 clusters of galaxies extracted from the X-ray flux-limited sample HIFLUGCS according to their positions i n the sky. For these

Fossil groups origins - I. RX J105453.3+552102 a very massive and relaxed system at z ~ 0.5

Context. The most accepted scenario for the origin of fossil groups is that they are galaxy associations in which the merging rate was fast and efficient. These systems have assembled half of their

The Isolated Elliptical NGC 1132: Evidence for a Merged Group of Galaxies?

Numerical simulations predict that some poor groups of galaxies have merged by the present epoch into giant ellipticals. To identify the possible remnants of such mergers, we have compiled a sample

A fossil galaxy cluster: an X-ray and optical study of RX J1416.4+2315

We present a detailed X-ray and optical study of a distant fossil system RX J1416.4+2315 (z � 0.137), combining Chandra and XMM-Newton observations, optical photometry and spectroscopy. X-ray

An old galaxy group: Chandra X-ray observations of the nearby fossil group NGC 6482

We present the first detailed X-ray observations, using Chandra, of NGC 6482 - the nearest known fossil group. The group is dominated by an optically luminous giant elliptical galaxy and all other

Chandra and HST Snapshots of Fossil System Progenitors

The search for the progenitors to today’s fossil galaxy systems has been restricted to N-body simulations until recently, when 12 fossil progenitors were identified in the CASSOWARY catalog of

The Hierarchical Build-Up of Massive Galaxies and the Intracluster Light since z = 1

We use a set of simulation-based models for the dissipationless evolution of galaxies since z = 1 to constrain the fate of accreted satellites embedded in dark matter subhalos. These models assign

Different Methods of Forming Cold Fronts in Nonmerging Clusters

Sharp edges in X-ray surface brightness with continuous gas pressure called cold fronts have often been found in relaxed galaxy clusters such as Abell 496. Models that explain cold fronts as
...