NGC 5634 / C1427-057 (Updated January 2013) RA: 14:29:37.23 DEC: -05:58:35.1 (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 14:29:33.52 -05:58:56.6 R0 0.6587 17.5 1.200 B RR0 2 14:29:35.71 -05:57:14.6 R0 0.6051 17.45 1.300 B RR0 3 14:29:34.32 -05:57:55.7 R0 0.6005 17.5 1.400 B RR0 4 14:29:40.92 -05:59:44.1 R0 0.3857 17.6 0.600 B RR1 5 14:29:36.40 -06:01:20.6 R0 0.4065 17.95 0.900 B RR1 6 14:29:40.20 -05:59:31.2 R0 0.3442 17.65 0.700 B RR1 7 14:29:37.30 -05:58:42.0 R0 ---- -- -- CST Note 8 14:29:41.12 -05 59 16.6 R0 0.3300 -- -- RR1 9 14:29:37.19 -05:58:38.1 R0 0.5830 -- -- RR0 Note 10 14:29:38.02 -05:58:37.3 R0 0.6460 -- -- RR0 Note 11 14:29:37.90 -05:58:29.3 R0 0.6600 -- -- RR0 12 14:29:36.95 -05:58:28.3 R0 0.6240 -- -- RR0 13 14:29:36.15 -05:58:26.2 R0 0.6450 -- -- RR0 14 14:29:38.51 -05:58:17.4 R0 0.7200 -- -- RR0 15 14:29:37.59 -05:58:18.6 R0 0.8520 -- -- RR0 16 14:29:37.66 -05:58:05.8 R0 0.6700 -- -- RR0 17 14:29:36.93 -05:57:55.2 R0 0.2890 -- -- RR1 18 14:29:36.02 -05:59:18.2 R0 0.3250 -- -- RR1 19 14:29:37.42 -05:59:04.1 R0 0.2960 -- -- RR1 20 14:29:36.64 -05:58:38.1 R0 0.6480 -- -- RR0 Note 21 14:29:35.29 -05:59:08.6 R0 0.0666 -- -- SXPHE =================================================================== Supplementary Notes For V1-7, the RA and dec are from Samus et al. (2009) and the periods, magnitudes and classification are from Liller & Sawyer Hogg (1976) unless indicated otherwise in the notes on individual stars. The periods and classifications for V8-21 are from the discovery paper by Salinas et al. (2005). The RA and dec were derived from the study by Salinas et al. (2012) and were provided by Salinas (2013, private communication), unless indicated otherwise in the note on individual stars. Salinas et al. (2012) studied the spatial distribution of the blue stragglers in NGC 5634, as well as in three other Sagitarrius dwarf galaxy GCs: Arp 2, Pal 12 and Terzan 8. ==================================================================== Notes on individual stars V7: The non-variable status for this star is based on the fact that Salinas et al. (2005) did not detect any variation when they applied the image subtraction technique, even though they recovered the other six known variables and discovered a number of new ones. Furthermore, both Baade (1945) and Liller & Sawyer Hogg (1976) noted that they could not estimate reliable magnitudes for V7 because of its crowded field. V9, V10, V20: These 3 stars were not detected by DAOphot in the photometry of Salinas et al (2012). Their RA and dec have been calculated by C. Clement (2013) based on the x, y, RA, dec values derived in the studies by Salinas et al. (2005, 2012). For these calculations, the origin for the x,y system was assumed to be RA=14:29:37.16 and dec=-05:58:38.1. =================================================================== Discovery of the variable stars in NGC 5634: V1-7 Baade (1945) with x,y coordinates and an ID chart V8-21 Salinas et al. (2005) with x,y coordinates and an ID chart ==================================================================== References Baade, W. 1945, ApJ, 102, 17 Liller, M. & Sawyer Hogg, H. 1976, AJ, 81, 628 Salinas, R., Catelan, M., Smith, H. A., Pritzl, B. J., Borissova, J. 2005, IBVS, 5640 Salinas, R., Jilkova, L., Carraro, G., Catelan, M., Amiga, P. 2012, MNRAS, 421, 960 Samus, N. N., Kazarovets, E. V., Pastukhova, E. N., Tsvetkova, T. M., Durlevich, O. V. 2009, PASP, 121, 1378 ==========================================================================