The Oosterhoff effect

Details The Oosterhoff effect The Oosterhoff effect

Jun 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993mnras.262..588v&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 262, no. 3, p. 588-590.

Astronomy and Astrophysics

Astronomy

17

Galactic Evolution, Globular Clusters, Stellar Orbits, Variable Stars, Metallicity, Milky Way Galaxy

Scientific paper

It is found (greater than 99 percent confidence) that globular clusters of Oosterhoff class I lie on retrograde orbits more frequently than do clusters of Oosterhoff class II. A possible explanation for the observed correlation between the orbital parameters of globular clusters and the properties of their RR Lyrae stars is that the main body of the proto-Galaxy captured at least one massive ancestral galaxy in a retrograde orbit.

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