Discovery of a star cluster in the Galactic halo

Details Discovery of a star cluster in the Galactic halo Discovery of a star cluster in the Galactic halo

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987mnras.225..499s&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 225, April 1, 1987, p. 499-503. Research supported by t

Astronomy and Astrophysics

Astronomy

33

Horizontal Branch Stars, Milky Way Galaxy, Star Clusters, Stellar Spectrophotometry, Galactic Structure, Mass Distribution, Mass To Light Ratios, Radial Velocity, Stellar Luminosity

Scientific paper

A group of five blue horizontal-branch stars located within a small volume in the galactic halo and with a small velocity dispersion has been discovered. If the system is bound, it has a mass typical of a large globular cluster but a much lower luminosity, implying that the system contains high M/L matter. If the system is unbound, it has been disrupted recently, e.g. by passage through the galactic disc.

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