NGC 6139 / C1624-387 (updated February 2013) RA: 16:27:40.37 DEC: -38:50:55.5 (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) 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 16:28:11.77 -38:40:04.6 R0 ---- -- -- L 2 16:27:12.54 -38:49:29.0 R0 ---- -- -- L 3 16:28:27.94 -38:54:39.2 R0 ---- -- -- L 4 16:28:08.40 -38:48:46.9 R0 ---- -- -- UG? 5 16:27:34.31 -38:51:19.3 R0 0.595 18.5 1.4 B RR0? altP=0.37 6 16:27:43.79 -38:48:21.7 R0 0.70 18.9 1.0 B RR0 7 16:27:44.54 -38:47:59.5 R0 0.417 18.75 0.7 B RR1 8 16:28:16.40 -38:49:58.8 R0 ---- -- -- ? short P? 9 16:27:35.40 -38:41:26.8 R0 0.526 18.85 1.5 B RR0 10 16:27:26.31 -38:49:07.3 R0 0.76 19.1 1.0 B RR0 ========================================================================== Supplementary Notes The RA and dec are from Samus et al. (2009). The remaining data are from Hazen (1991). The long period variabes V1-3 are brighter than the RR Lyrae variables and are considered to be cluster members. The candidate cataclysmic variable had one outburst and was below the plate limit (Bmag > 19.6) the rest of the time. =========================================================================== Discovery of the variable stars in NGC 6139: V1-10 Hazen (1991) with x,y coordinates and ID charts Hazen also provided data for 6 field variables, F1-6, which she discovered outside the cluster's tidal radius. Fourcade et al. (1966) had previousy observed the cluster but did not discover any variables. ======================================================================== References Fourcade, C. R., Laborde, J. R., Albarracin, J. 1966, Atlas y Catalogue de Estrellas Variables en Cumulos Globulares al sur de -29 degrees, Cordoba Hazen, M. L. 1991, AJ, 101, 170 Samus, N. N., Kazarovets, E. V., Pastukhova, E. N., Tsvetkova, T. M., Durlevich, O. V. 2009, PASP, 121, 1378 =======================================================================