Terzan 12 / C1809-227 / ESO522-SC1 (Updated May 2014) RA: 18:12:15.8 DEC: -22:44:31 (J2000) ============================================================ Bytes Format Explanation 1-8 A8 Star ID 10-32 A11,1x,A11 Position 34-35 A2 Units for position R0 denotes RA, DEC in the J2000 coordinates R5 denotes RA, DEC in the 1950 coordinates XA denotes X, Y in arcseconds XP denotes X, Y in pixels 37-44 F8.4 Period (days) 46-51 F6.3 Mean magnitude (or maximum magnitude if "max" is indicated in the remarks column) 53-57 F5.3 Light amplitude (range of variability) 59 A1 Colour for mean magnitude and amplitude e.g. B, V, R, I, J, K or P (for photographic). 61-65 A5 Type of variable (draft 2006 GCVS classifications) CST denotes non variable stars previously designated as variables 67-80 A19 Notes and Remarks (f denotes field star) "--" or "----" indicates no data available ========================================================================= ID Position Period ampl C Type Notes/ RA/X Dec/Y Units Remarks ========================================================================= 1 18:12:14.18 -22:43:58.9 R0 458.0 6.23 1.02 K M ======================================================================== Supplementary Notes Ortolani et al. (1998) published a VI CMD which had a red HB, a characteristic of a metal-rich cluster and estimated a tentative value [Fe/H] = -0.5 based on the slope of the RG branch. The data for V1 are from Sloan et al. (2010) who conclude that the star is a cluster member. ====================================================================== Discovery of the Variable Stars in Terzan 12 V1 Sloan et al. (2010) with RA and dec ======================================================================= References Ortolani, S., Bica, E., Barbuy, B. 1998, A&AS, 127, 471 Sloan, G. C., Matsunaga, N., Matsuura, M., Zijlstra, A. A., Kraemer, K. E., Wood, P. R., Nieusma, J., Bernard-Salas, J., Devost, D., Houck, J. R. 2010, ApJ, 719, 1274 =======================================================================