Using MUSE-AO observations to constrain the formation of the large nuclear star cluster in FCC47

Abstract

Nuclear star clusters (NSCs) are found in at least 70% of all galaxies, but their formation path is still unclear. In the most common scenarios, NSCs form in-situ from the galaxy's central gas reservoir, through merging of globular clusters (GCs), or through a combination of the two. As the scenarios pose different expectations for angular momentum and stellar population properties of the NSC in comparison to the host galaxy and the GC system, it is necessary to characterise the stellar light, NSC, and GCs simultaneously. Wide-field observations with modern integral field units such as the Multi Unit Spectroscopic Explorer (MUSE) allow to perform such studies. However, at large distances, NSCs usually are not resolved in MUSE observations. The particularly large NSC (R_eff $\sim$ 66 pc) of the early-type galaxy FCC47 at distance of $\sim$ 20 Mpc is an exception and is therefore an ideal laboratory to constrain NSC formation of external galaxies.

arXiv commentProceedings of the IAU symposium 351, 4 pages, 1 figure

References in corpus (19)

• Parametric Recovery of Line-of-Sight Velocity Distributions from Absorption-Line Spectra of Galaxies via Penalized Likelihood
• Improving the full spectrum fitting method: accurate convolution with Gauss-Hermite functions
• Evolutionary Stellar Population Synthesis with MILES. Part I: The Base Models and a New Line Index System
• The ACS Fornax Cluster Survey. V. Measurement and Recalibration of Surface Brightness Fluctuations and a Precise Value of the Fornax--Virgo Relative Distance
• An HST Census of Nuclear Star Clusters in Late-Type Spiral Galaxies: I. Observations and Image Analysis
• Masses and Scaling Relations for Nuclear Star Clusters, and their Coexistence with Central Black Holes
• Co-evolution of nuclear star clusters, massive black holes and their host galaxies
• Constraining the role of star cluster mergers in nuclear cluster formation: Simulations confront integral-field data
• On the distribution of stellar remnants around massive black holes: slow mass segregation, star cluster inspirals and correlated orbits
• New insights on the formation of nuclear star clusters
• On the rotation of nuclear star clusters formed by cluster-inspirals
• Combining Stellar Populations with Orbit-Superposition Dynamical Modelling - the Formation History of the Lenticular Galaxy NGC 3115
• The Next Generation Fornax Survey (NGFS): IV. Mass and Age Bimodality of Nuclear Clusters in the Fornax Core Region
• Dynamical friction in cuspy galaxies
• Two-dimensional H_alpha kinematics of bulgeless disk galaxies
• Dissipative transformation of non-nucleated dwarf galaxies into nucleated systems
• The simultaneous formation of cored, tangentially biased, and kinematically decoupled centers in massive early-type galaxies
• The ACS Fornax Cluster Survey. III. Globular Cluster Specific Frequencies of Early-Type Galaxies
• A New Channel for the Formation of Kinematically Decoupled Cores in Early-type galaxies