Accurate radial velocities for three Fornax globular clusters

Details Accurate radial velocities for three Fornax globular clusters Accurate radial velocities for three Fornax globular clusters

Sep 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986aj.....92..580a&link_type=abstract

Astronomical Journal (ISSN 0004-6256), vol. 92, Sept. 1986, p. 580-584.

Astronomy and Astrophysics

Astronomy

15

Dwarf Galaxies, Globular Clusters, Radial Velocity, Astrometry, Carbon Stars, Spectrographs, Star Distribution, Velocity Distribution

Scientific paper

Observations of globular clusters 3, 4, and 5 of the Fornax dwarf spheroidal, obtained at 516-521 nm using an echelle reticon spectrograph on the MMT during December 1985, are reported, and the data are used to calculate the cluster radial velocities to within 1-2 km/s. The spectra are presented graphically, and the velocity dispersions are shown to be in good agreement with those determined previously using C-stars, indicating the validity of that approach. The systemic heliocentric velocity of Fornax is given as 55 + or 5 km/s, or -34 km/s corrected to the Galactic rest frame.

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