References

 
• Baumgardt, H., Dettbarn, C., & Wielen, R. 2000, A&AS, 146, 251 NASA ADS  
• Böhm-Vitense, E. 1958, A&A, 46, 108  
• Böhm-Vitense, E., & Canterna, R. 1974, ApJ, 194, 629 NASA ADS  
• Burki, G. 1975, A&A, 43, 37 NASA ADS  
• Canterna, R., Perry, C. L., & Crawford, D. L. 1979, PASP, 91, 263 NASA ADS  
• Cardelli, J. A., Clayton, G. C., & Mathis, J. S. 1989, ApJ, 345, 245 NASA ADS  
• Clariá, J. J. 1977, A&AS, 27, 145 NASA ADS  
• Clariá, J. J., & Lapasset, E. 1986, AJ, 91, 326 NASA ADS  
• Clariá, J. J., Lapasset, E., & Bosio, M. A. 1991, MNRAS, 249, 193 NASA ADS  
• Clariá, J. J., Piatti, A. E., & Lapasset, E. 1998, A&AS, 128, 131 NASA ADS  
• Clariá, J. J., Piatti, A. E., Lapasset, E., & Mermilliod, J.-C. 2003, A&A, 399, 543 NASA ADS  
• Cousins, A. W. J. 1973, Mem. R. Astron. Soc., 77, 22  
• Cousins, A. W. J. 1974, MNRAS, 33, 149  
• Dias, W. S., Lépine, J. R. D., & Alessi, B. S. 2001, A&A, 376, 441 NASA ADS  
• Garrison, R. F., Hiltner, W. A., & Schild, R. E. 1977, ApJS, 35, 111 NASA ADS  
• Glushkova, E. V., Zabolotskikh, M. V., Rastorguev, A. S., Uglova, I. M., & Fedorova, A. A. 1997, AstL, 23, 71 NASA ADS  
• Graham, J. A. 1982, PASP, 94, 244 NASA ADS  
• Gulyaev, A. P., & Nesterov, V. V. 1992, The Four-Million Star Catalog (Moscow: Izd. Mos. Gos. Univ.)  
• Houck, N. 1978, Michigan Catalogue of Two Dimensional Spectral Types for the HD Stars, 2  
• Humphreys, R. M. 1978, ApJS, 38, 309 NASA ADS  
• Jørgensen, U. G., & Westerlund, B. E. 1988, A&AS, 72, 193 NASA ADS  
• Kilambi, G. C. 1975, PASP, 87, 975 NASA ADS  
• Kilambi, G. C. 1978, PASP, 90, 721 NASA ADS  
• Landolt, A. U. 1973, AJ, 78, 959 NASA ADS  
• Lapasset, E., & Clariá, J. J. 1985, IBVS, 2749  
• Lejeune, T., & Schaerer, D. 2001, A&A, 366, 538 NASA ADS  
• Loktin, A., Gerasimenko, T., & Malisheva, L. 2001, A&A, 20, 605  
• Loktin, A., Maktin, N. V. 1994, A&A, 4, 153  
• LyngåG. 1959, Ark. Astron., 2, 379 NASA ADS  
• LyngåG. 1962, Ark. Astron., 3, 65 NASA ADS  
• Mel'nik, A. M., & Efremov, Yu. N. 1995, AstL, 21, 10 NASA ADS  
• Mermilliod, J.-C. 1976, A&A, 53, 289 NASA ADS  
• Mermilliod, J.-C. 2000, WEBDA Open Cluster Database, http://obswww.unige.ch/wedba/  
• Perryman, M. A. C., Brown, A. G. A., Lebreton, Y., et al. 1998, A&A, 331, 81 NASA ADS  
• Piatti, A. E., & Clariá, J. J. 2002, A&A, 388, 108  
• Piatti, A. E., Clariá, J. J., & Ahumada, A. V. 2003, MNRAS, 340, 1249 NASA ADS  
• Piatti, A. E., Clariá, J. J., & Bica, E. 1999, MNRAS, 303, 65 NASA ADS  
• Ruprecht, J. 1966, Bull. Inst. Czech., 17, 34  
• Sanders, W. L. 1971, A&A, 14, 226 NASA ADS  
• Schmidt-Kaler, Th. 1982, in Landolt-Bornstein, Numerical Data and Functional Relationships in Science and Technology, New Series, group VI, ed. K. Schaifers, & H. H. Voigt (Berlin: Springer Verlag), 2b  
• Trumpler, R. J. 1930, Lick Obs. Bull., 14, 154 NASA ADS  
• van den Bergh, S., & Hagen, G. L. 1975, AJ, 80, 11 NASA ADS