Globular cluster halos around dwarf elliptical galaxies

Dante Minniti, Georges Meylan, Markus Kissler-Patig

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)

Abstract

Dwarf galaxies are thought to be one of the building elements of spiral galaxies like the Milky Way, adding their globular clusters (GCs) to the halo when they merge. However, nearby dwarf elliptical galaxies have few or no GCs, complicating the study of their contribution in the context of halo formation. In order to improve on the statistics, we have constructed a master-dE galaxy by combining the data from several well studied dEs in the Local Group, scaling the projected distances in units of core radius. Using this master dE, we address the following basic questions: Are there halos of GCs around dEs? If so, are they flattened in a way similar to the host galaxies or are they more spherical? The answers to the above questions might give some clues about the formation of galaxies. We also examine the metallicity distribution of the GC system of this master dE galaxy. Using this information, we argue that the metal-rich globular cluster Ter 7 is unlikely to be a member of the recently discovered Sgr dwarf galaxy.

Original languageEnglish
Pages (from-to)49-54
Number of pages6
JournalAstronomy and Astrophysics
Volume312
Issue number1
Publication statusPublished - 1 Aug 1996

Keywords

  • Galaxies: individual: the Fornax dSph, NGC 185, NGC 147, NGC 205
  • Galaxies: star clusters
  • Globular clusters: individual: Ter 7

ASJC Scopus subject areas

  • Space and Planetary Science
  • Astronomy and Astrophysics

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