The Sagittarius dwarf mass-to-light ratio

S. Zaggia, P. Bonifacio, M. Bellazzini, E. Caffau, F. Ferraro, G. Marconi, L. Monaco, S. Monai, L. Sbordone

Research output: Contribution to journalArticlepeer-review

Abstract

We report on the use of high-resolution spectra to obtain a detailed description of the Sagittarius dwarf spheroidal internal dynamics, its Mass and Mass to Light ratio (M/L). Our direct measure of the central velocity dispersion of SGR give σSGR = 8.1 ± 0.4 km/s which translates in a total mass estimate of MSGR = 1.6 × 108 M and corresponding (M/L)SGR = 9.1(M/L). We also report on a possible detection of rotation in the core of SGR.

Original languageEnglish
Pages (from-to)101-104
Number of pages4
JournalProceedings of the International Astronomical Union
Volume1
Issue numberC198
DOIs
Publication statusPublished - 2005

Keywords

  • Dwarf galaxies
  • Kinematics
  • Mass

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Astronomy and Astrophysics
  • Nutrition and Dietetics
  • Public Health, Environmental and Occupational Health
  • Space and Planetary Science

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