Galactic orbits of RR Lyrae variable stars (Borkova+, 2002)

Details Galactic orbits of RR Lyrae variable stars (Borkova+, 2002) Galactic orbits of RR Lyrae variable stars (Borkova+, 2002)

Sep 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002ycat..80790510b&link_type=abstract

VizieR On-line Data Catalog: J/AZh/79/510. Originally published in: 2002AZh....79..510B; 2002ARep...46..460B

Computer Science

Stars: Variable, Stars: Distances, Abundances: [Fe/H], Space Velocities

Scientific paper

We have used published, high-accuracy, ground-based and satellite proper-motion measurements, a compilation of radial velocities, and photometric distances to compute the spatial velocities and Galactic orbital elements for 174 RR Lyrae (ab) variable stars in the solar neighborhood. The computed orbital elements and published heavy-element abundances are used to study relationships between the chemical, spatial, and kinematic characteristics of nearby RR Lyrae variables. We observe abrupt changes of the spatial and kinematic characteristics at the metallicity [Fe/H]~-0.95 and also when the residual spatial velocities relative to the LSR cross the critical value Vres~290km/s.
(1 data file).

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