Dynamical masses of ultra-compact dwarf galaxies in Fornax

2006/11/20 by M. Hilker, H. Baumgardt, L. Infante +3
Physics and Astronomy · #Astronomy and Astrophysical Research #Dark matter #Dwarf galaxy #Dwarf galaxy problem #Dwarf spheroidal galaxy #Elliptical galaxy #Fornax Cluster #Galaxies: Formation, Evolution, Phenomena #Galaxy #Globular cluster #Scientific Research and Discoveries #astro-ph

paper · pdf · doi:10.1051/0004-6361:20066429

14 pages, 11 figures, accepted for publication in Astronomy & Astrophysics

openalex publication_date 2006/11/20 · arxiv created 2006/12/18 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05

Abstract

Aims.We determine masses and mass-to-light ratios of five ultra-compact dwarf galaxies (UCDs) and one dwarf elliptical nucleus in the Fornax cluster from high resolution spectroscopy. We examine whether they are consistent with pure stellar populations or whether dark matter is needed to explain their masses.

Citations

• Spectroscopic Metallicities for Fornax Ultracompact Dwarf Galaxies, Globular Clusters, and Nucleated Dwarf Elliptical Galaxies
• Dynamical Friction in dE Globular Cluster Systems
• Stellar population models of Lick indices with variable element abundance ratios
• Ultracompact Dwarf Galaxies in the Fornax Cluster
• Fornax compact object survey FCOS: On the nature of Ultra Compact Dwarf galaxies
• Compact Stellar Systems in the Fornax Cluster: Super-massive Star Clusters or Extremely Compact Dwarf Galaxies?
• The Colors of Dwarf Elliptical Galaxy Globular Cluster Systems, Nuclei, and Stellar Halos
• Mayall II = G1 in M31: Giant Globular Cluster or Core of a Dwarf Elliptical Galaxy?
• The dynamical distance and intrinsic structure of the globular clusterωCentauri
• Final Results from theHubble Space TelescopeKey Project to Measure the Hubble Constant
• A Population of Massive Globular Clusters in NGC 5128
• A class of compact dwarf galaxies from disruptive processes in galaxy clusters