Volume 420, Number 1, June II 2004
|Page(s)||213 - 215|
|Section||Galactic structure, stellar clusters, and populations|
|Published online||14 May 2004|
RR Lyrae stars in the outer region of the globular cluster M 3: A shortage of long periods at r ~ 3.5 to 6 arcmin?
Max-Planck Institut für Astronomie, Königstuhl 17, 69117 Heidelberg, Germany
Corresponding author: email@example.com
Accepted: 31 March 2004
An analysis of the radial distribution of ab-type RR Lyrae star periods in the outer region of the globular cluster M 3 at has been performed. That analysis points towards a real shortage of stars with long periods in the radial distance range 3.5′ to 6′ (or about 7 to 12 core radii). A brief discussion is presented. The origin of the phenomenon remains an open question.
Key words: stars: variables: RR Lyr / stars: horizontal-branch / stars: evolution / globular clusters: general / globular clusters: individual: M 3
© ESO, 2004
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