運動星団
↑ Johnston, Kathryn V. (1995). “Fossil Signatures of Ancient Accretion Events in the Halo”. Bulletin of the American Astronomical Society 27: 1370. http://arxiv.org/abs/astro-ph?papernum=9602060 2008年8月10日閲覧。.
↑ Eggen, O.J. Moving Groups of Stars. Galactic structure, ed. Adriaan Blaauw and Maarten Schmidt. University of Chicago Press, Chicago, p.111 (1965). (ADS entry )
↑ López-Santiago, J; Montes, D; Crespo-Chacón, I; Fernández-Figueroa, MJ (2006). The Astrophysical Journal 643 (2): 1160-1165. (ADS entry)