Intra-cluster patches of baryons in the core of the Fornax cluster

Abstract

In the core of the Fornax cluster, on the West side of NGC1399, we have detected a previously unknown region of intra-cluster light (ICL). It is made up by several faint (${\mu }_r\simeq 28-29$~mag/arcsec${}^2$) {\it patches} of diffuse light. The bulk of the ICL is located in between the three bright galaxies in the core, NGC1387, NGC1379 and NGC1381, at $10\le R\le 40$~arcmin ($\sim 58-230$~kpc) from the central galaxy NGC~1399. We show that the ICL is the counterpart in the diffuse light of the known over-density in the population of blue globular clusters (GCs). The total g-band luminosity of the ICL is $L_g\simeq 8.3\times 10^9$ $L_{\odot }$, which is $\sim 5\%$ of the total luminosity of NGC1399. This is consistent with the fraction of the blue GCs in the same region of the cluster. The ICL has $g-r\sim 0.7$~mag, which is similar to the colors in the halo of the bright galaxies in the cluster core. The new findings were compared with theoretical predictions for the ICL formation and they support a scenario in which the intra-cluster population detected in the core of the Fornax cluster is build up by the tidal stripping of material (stars and GCs) from galaxy outskirts in a close passage with the cD. Moreover, the diffuse form of the ICL and its location close to the core of the cluster is expected in a dynamically evolved cluster as Fornax.

Accepted for publication in ApJ

References in corpus (11)

• The ACS Virgo Cluster Survey XV. The Formation Efficiencies of Globular Clusters in Early-Type Galaxies: The Effects of Mass and Environment
• The Importance of Mergers for the Origin of Intracluster Stars in Cosmological Simulations of Galaxy Clusters
• The Burrell Schmidt Deep Virgo Survey: Tidal Debris, Galaxy Halos, and Diffuse Intracluster Light in the Virgo Cluster
• The Formation and Evolution of Intracluster Light
• Diffuse Optical Light in Galaxy Clusters II: Correlations with Cluster Properties
• Intracluster light and the extended stellar envelopes of cD galaxies: An analytical description
• Large-scale study of the NGC 1399 globular cluster system in Fornax
• Intra-Cluster Light at the Frontier: Abell 2744
• Intra Cluster Light properties in the CLASH-VLT cluster MACS J1206.2-0847
• The difference in metallicity distribution functions of halo stars and globular clusters as a function of galaxy type: A tracer of globular cluster formation and evolution
• Distribution of star formation rates during the rapid assembly of NGC 1399 as deduced from its globular cluster system

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