The dynamics and metallicity of the M31 globular cluster system

Details The dynamics and metallicity of the M31 globular cluster system The dynamics and metallicity of the M31 globular cluster system

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982apj...259l..57h&link_type=abstract

Astrophysical Journal, Part 2 - Letters to the Editor, vol. 259, Aug. 15, 1982, p. L57-L61.

Other

67

Galactic Rotation, Galactic Structure, Globular Clusters, Metals, Andromeda Galaxy, Astronomical Spectroscopy, Radial Velocity, Stellar Motions

Scientific paper

Digital, low-dispersion spectra of 61 globular clusters in M31 have been obtained with the Multiple Mirror Telescope. Preliminary analyses of these spectra show that: (1) the M31 globular cluster system rotates with a velocity amplitude of approximately 160 + or - 40 km/s peak to peak, and (2) there is a measurable but small metallicity gradient exhibited by those clusters. The globular clusters detected as X-ray sources by the Einstein Observatory survey of M31 do not show any significant spectroscopic differences from the other clusters observed.

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