NGC 6402 / C1735-032 / Messier 14 (Updated 2009) RA: 17:37:36.10 DEC: -03:14:45.3 (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 or P (for photographic). 61-65 A5 Type of variable (draft 2006 GCVS classifications) NV denotes not variable 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 17 47 XA 18.729 15.35 1.9 B CW 2 -116 -119 XA 2.7947 16.4 1.2 B CW 3 -3 -90 XA 0.5224 17.35 0.9 B RR0 4 169 73 XA 0.6513 18.05 1.4 B RR0 5 -136 90 XA 0.5488 18.05 1.6 B RR0 6 34 -77 XA ---- 16.7 1.1 B Lb 7 62 -97 XA 13.6038 16.0 1.2 B CW 8 96 35 XA 0.6861 18.15 0.85 B RR0 9 151 -39 XA 0.5388 17.95 1.4 B RR0 10 -51 -205 XA 0.5859 17.95 1.4 B RR0 11 196 -223 XA 0.6044 17.5 1.7 B RR0 12 224 -177 XA 0.5040 18.05 1.6 B RR0 13 -29 -118 XA 0.5352 18.05 1.7 B RR0 14 54 1 XA 0.4719 17.9 1.6 B RR0? 15 -135 147 XA 0.5577 17.95 1.8 B RR0 16 -79 -36 XA 0.6006 17.75 1.5 B RR0 17 -228 122 XA 12.091 15.95 0.9 B CW 18 61 -22 XA 0.4791 17.8 1.3 B RR0 19 -128 2 XA 0.5457 17.95 1.55 B RR0 20 -145 98 XA 0.2637 18.0 0.6 B RR1 21 72 125 XA 0.3189 17.75 0.7 B RR1 22 70 95 XA 0.6559 18.0 1.25 B RR0 23 74 281 XA 0.5523 17.85 1.45 B RR0 24 -2 75 XA 0.5199 18.0 1.8 B RR0 25 -28 -312 XA 0.3607 17.9 0.7 B RR1 26 -85 27 XA ---- -- -- NV? redHB 27 -421 151 XA 308.0 16.8 1.1 B M f? 28 -465 372 XA ---- -- -- B E f? 29 -68 -152 XA ---- 16.45 0.7 B Lb 30 76 -12 XA 0.5342 17.8 1.55 B RR0 31 -41 32 XA 0.6196 17.45 0.95 B RR0 blended 32 36 147 XA 0.6560 17.6 1.15 B RR0 33 -138 12 XA 0.4799 17.75 1.2 B RR0 blended 34 -70 26 XA 0.6066 18.0 1.15 B RR0 35 -112 -49 XA ---- -- -- RR1? Note 36 204 -346 XA 0.6780 17.8 1.15 B RR0 37 5 18 XA 0.4891 17.95 1.55 B RR0 38 11 -17 XA 0.5085 17.75 1.2 B RR0 39 46 -2 XA 0.5760 17.7 1.15 B RR0 40 253 310 XA ---- -- -- NV? redHB 41 -13 -3 XA ---- -- -- blended 42 36 12 XA ---- -- -- blended 43 68 23 XA 0.5217 17.7 1.2 B RR0 44 20 116 XA 0.2894 17.7 0.7 B RR1 45 -90 94 XA 16.6 1.2 B Lb 46 91 -66 XA 0.3326 17.8 0.45 B RR1 47 -89 26 XA 0.8769 17.8 0.5 B RR0? 48 -4 40 XA 0.4678 17.95 1.35 B RR0 49 -98 -19 XA 0.6415 17.5 0.7 B RR0 blended 50 -15 -38 XA ---- -- -- blended 51 104 -305 XA 0.3676 17.85 0.6 B RR1 52 82 39 XA ---- -- -- NV? 53 134 129 XA ---- -- -- NV? 54 121 113 XA ---- -- -- NV? redHB 55 33 106 XA 0.3375 17.95 0.6 B RR1 56 -68 -184 XA 0.3411 17.75 0.55 B RR1 57 134 -116 XA 0.5669 18.15 1.35 B RR0 58 -123 -34 XA 0.4179 17.6 0.45 B RR1? 59 -32 30 XA 0.5556 18.0 1.4 B RR0 60 41 54 XA 0.5798 18.1 1.15 B RR0 61 12 -43 XA 0.5698 17.7 1.25 B RR0 62 -232 -154 XA 0.6384 18.15 0.5 B RR0 63 122 -63 XA ---- -- -- NV? redHB 64 -51 -169 XA ---- -- -- NV? blueHB 65 -125 13 XA ---- -- -- NV? redHB 66 -133 37 XA ---- -- -- NV? blueHB 67 34 14 XA ---- -- -- blended 68 10 -19 XA 0.5072 18.0 1.7 RR0 69 140 26 XA ---- -- -- RR1? Note 70 43 -23 XA 0.6047 17.3 0.8 B RR0 blended 71 -116 -50 XA 0.5259 17.85 1.35 B RR0 72 112 -119 XA ---- -- -- NV? blueHB 73 5 7 XA ---- 17.0 1.6 B Lb blended 74 7 91 XA ---- 16.75 0.9 B Lb 75 35 -12 XA 0.5453 18.0 1.3 B RR0 blended 76 -105 3 XA 1.8903 16.6 1.0 B CW 77 -110 55 XA 0.3274 17.8 0.35 B RR1 78 -137 -5 XA 0.3100 17.75 0.35 B RR1 79 -12 -18 XA 0.5599 17.6 1.05 B RR0 crowded 80 -35 -145 XA 0.3158 17.45 0.5 B RR1 blended 81 -38 -138 XA ---- -- -- NV? 82 -79 -122 XA ---- -- -- NV? 83 -65 -34 XA ---- -- -- NV? blended 84 -44 -38 XA ---- -- -- blended 85 -21 48 XA ---- -- -- blended 86 72 24 XA 0.2991 17.8 0.9 B RR1 Note 87 -74 11 XA ---- -- -- blended 88 -78 10 XA 0.3134 17.85 0.4 B RR1 89 -19 -17 XA ---- -- -- blended 90 -39 -31 XA 0.3513 17.75 0.3 B RR1 91 -96 -39 XA ---- -- -- blended 92 -47 40 XA ---- -- -- blended 93 -17 29 XA ---- -- -- blended Nova 30 4 XA ---- 16.0 -- B NOVA Bmax;Note ========================================================================= Supplementary Notes and References A good summary of the variables in M14 was given by Wehlau & Froelich (1994, AJ 108, 134). They listed mean B magnitudes, (B-V) colours and B amplitudes for all of the stars they classified as pulsating. Their paper also included an appendix with notes on many of the individual stars, including all of the unclassified variables. In addition, they published ID charts for all variables numbered from V1 to V93 (except V28 which is almost 10 arcmin from the cluater centre.) All of the periods, magnitudes, variability types and remarks for V1-93 in the above table were taken from Wehlau & Froelich's paper. ====================== Notes on individual stars V35 and V69: Wehlau & Froelich (see midde of 2nd column on page 145 of their paper) commented that both of these stars are possible RR Lyrae c types for which no consistent periods could be obtained. V86: We have revised the x,y coodinates for V86 because of a comment by Wehlau & Froelich (see top of 2nd column on page 145 of their paper). They pointed out that the coordinates for this star were previously incorrectly listed. V86 is north and east of V43 as their ID chart (Fig 1b) illustrates. Nova: The maximum B magnitude for the Nova is from Sawyer Hogg & Wehlau (1964, JRASC 58, 163). ============================================= Discovery of the Variable Stars in M14: V1-72 Sawyer (1938, Pub. DAO, V7, No. 5) with x,y positions and an ID chart (but V27&28 were outside the field of the chart). V73-76 Sawyer Hogg & Wehlau, (1966, DDO Publ 2, No. 17) with x,y positions and an ID chart V77-88 Wehlau & Potts (1972, IBVS 752) with x,y positions V89-93 Wehlau et al. (1974, IBVS 859) with x,y positions Nova Sawyer Hogg & Wehlau (1964, JRASC 58, 163) with x,y position and ID chart ===================================================================