NGC 5986 / C1542-376 (Updated June 2016) RA: 15:46:03.00 DEC: -37:47:11.1 (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 15:46:08.23 -37:47:20.7 R0 0.7247 16.60 0.95 V RR0 2 15:46:02.5 -37:47:16 R0 0.6360 16.37 1.05 V RR0 3 15:46:04.78 -37:45:22.3 R0 0.5930 16.6 1.6 B RR0 4 15:45:56.04 -37:46:58.5 R0 ---- 15.01 0.2 V SR P>20 5 15:46:07.78 -37:47:15.6 R0 ---- -- -- CST Note 6 15:46:05.7 -37:47:36 R0 0.6272 16.46 1.15 V RR0 7 15:46:10.84 -37:45:29.2 R0 0.3278 16.9 0.6 B RR1 8 15:45:54.54 -37:45:10.1 R0 0.8230 16.9 0.6 B RR0 9 15:46:05.9 -37:47:33 R0 0.5546 16.72 1.40 V RR0 10 15:46:00.07 -37:47:26.1 R0 ---- 15.29 -- V RR? blend 11 15:46:04.2 -37:47:05 R0 0.6082 16.47 1.20 V RR0 12 15:46:13.0 -37:46:04 R0 0.3488 14.66 0.50 V RR1 f 13 15:46:00.3 -37:48:23 R0 40.62 10.07 0.20 K CW PSR MSP 2.6ms ========================================================================= Supplementary Notes The CM diagram of NGC 5986 has a predominantly blue HB (Alves et al. 2001). In the above table, the RA and dec for V1-12 are from Samus et al. (2009). The remaining data for stars with V mags listed are from Alves et al. (2001). For stars outside their field of view, the B data from Liller & Lichten (1978) are listed. All the data for V13 are from the discovery paper by Matsunaga et al. (2006). ======================================== Notes on individual stars V5: Liller & Lichten were unable to detect the variability of this star. Rosino reexamined his plates and confirmed this. Furthermore, Alves et al. (2001) did not recover this star as variable when they performed a "difference imaging" analysis. Therefore the star is now classified as non-variable. ===================================================================== Discovery of the variable stars in NGC 5986: V1-5 Rosino (1962) with an ID chart and x,y coordinates V6-12 Liller & Lichten with an ID chart and x,y coordinates V13 Matsunaga et al. (2006) with RA and dec PSR = PSR J1546-3747A = NGC 5986A Lynch & Ransom (2011) who derived orbital P = 1.3 days ---------------------------- Moni Bidin et al. (2009) detected a close binary candidate: their star #4175, an EHB star. ===================================================================== References Alves, D. R., Bond, H. E., Onken, C. 2001, AJ, 121, 318 Liller & Lichten 1978, AJ, 83, 1070 Lynch, R. S. & Ransom, S. M. 2011, ApJ, 730, L11 Matsunaga, N., Fukushi, H., Nakada, Y., Tanabe, T., Feast, M. W., Menzies, J. W., Ita, Y. and 7 coauthors, 2006, MNRAS, 370, 1979 Moni Bidin, C., Moehler, S., Piotto, G., Momany, Y., Recio-Blanco, A. 2009, A&A, 498, 737 Rosino, L. 1962, Mem. S. A. I. 33, 351 = Asiago Cont. 132 =============================================================