NGC 5024 / C1310+184 / Messier 53 (Updated January 2010) RA: 13:12:55.3 DEC: 18:10:09 (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 13:12:56.35 +18:07:14.6 R0 0.6098 16.91 1.210 B RR0 2 13:12:50.28 +18:07:01.3 R0 0.3862 17.10 0.600 B RR1 3 13:12:51.37 +18:07:46.1 R0 0.6306 17.10 1.300 B RR0 4 13:12:43.89 +18:07:26.8 R0 0.3856 17.13 0.550 B RR1 5 13:12:39.08 +18:05:42.9 R0 0.6394 17.01 1.380 B RR0 6 13:13:03.90 +18:10:20.6 R0 0.6640 16.98 1.050 B RR0 7 13:13:00.87 +18:11:30.5 R0 0.5448 16.85 1.400 B RR0 8 13:13:00.42 +18:11:05.7 R0 0.6155 16.98 1.050 B RR0 9 13:13:00.07 +18:09:25.7 R0 0.6003 16.73 1.310 B RR0 10 13:12:45.72 +18:10:56.0 R0 0.6083 16.96 1.280 B RR0 11 13:12:45.38 +18:09:02.5 R0 0.6299 16.93 1.050 B RR0 12 13:13:23.82 +18:13:17.3 R0 0.6126 16.93 1.550 B RR0 13 13:13:28.24 +18:05:13.7 R0 0.6274 16.87 1.570 B RR0 14 13:13:20.53 +18:06:43.7 R0 0.5453 16.98 1.450 B RR0 15 13:13:12.38 +18:13:56.1 R0 0.3087 17.02 0.470 B RR1 16 13:12:46.19 +18:06:39.7 R0 0.3032 17.12 0.530 B RR1 17 13:12:40.34 +18:11:54.5 R0 0.3811 17.00 0.500 B RR1 18 13:12:48.67 +18:10:13.7 R0 0.3361 16.82 0.53 V RR1 Kopacki 19 13:13:07.01 +18:09:26.9 R0 0.3910 16.94 0.63 B RR1 20 13:13:09.07 +18:04:17.0 R0 0.3842 17.18 0.65 B RR1 21 13:13:26.07 +18:09:44.2 R0 0.3385 17.16 0.64 B RR1 22 13:12:51.96 +18:05:17.0 R0 17.43 B NV Note 23 13:13:02.33 +18:08:36.5 R0 0.3658 17.08 0.65 B RR1 Kopacki 24 13:12:47.28 +18:09:32.9 R0 0.7632 17.20 0.60 B RR0 25 13:13:04.40 +18:10:38.0 R0 0.7051 17.00 0.60 B RR0 26 13:12:35.74 +18:05:20.8 R0 0.3911 17.02 0.57 B RR1 27 13:12:41.42 +18:07:24.2 R0 0.6711 16.90 1.10 B RR0 28 13:12:42.11 +18:16:38.3 R0 0.6328 16.93 1.44 B RR0 Note 29 13:13:04.26 +18:08:47.5 R0 0.8233 17.15 0.50 B RR0 30 13:13:00.15 +18:02:04.6 R0 0.5355 16.93 1.35 B RR0 31 13:12:59.57 +18:10:05.4 R0 0.7057 RR0 Kopacki 32 13:12:47.73 +18:08:36.3 R0 0.3904 16.89 0.52 B RR1 33 13:12:43.86 +18:10:13.5 R0 0.6246 17.05 1.40 B RR0 34 13:12:45.70 +18:06:26.6 R0 0.2896 16.928 0.2 V RR1 Dekany;Note 35 13:13:02.42 +18:12:38.3 R0 0.3727 17.15 0.40 B RR1 36 13:13:03.29 +18:15:11.0 R0 0.3732 17.10 0.40 B RR1 37 13:12:52.28 +18:11:05.8 R0 0.7176 16.79 0.97 B RR0 38 13:12:57.13 +18:07:41.2 R0 0.7058 16.93 0.95 B RR0 39 13:12:38.74 +18:13:31.8 R0 NV Note 40 13:12:55.86 +18:11:55.3 R0 0.3147 16.93 0.31 V RR1 Kopacki 41 13:12:56.76 +18:11:09.1 R0 0.6145 16.77 0.85 V RR0 Kopacki 42 13:12:50.56 +18:10:20.4 R0 0.7137 16.80 1.00 B RR0 43 13:12:53.07 +18:10:55.9 R0 0.7121 RR0 Kopacki 44 13:12:51.66 +18:10:01.1 R0 0.3751 RR1 Dekany;Note 45 13:12:55.15 +18:09:28.0 R0 0.6550 16.85 1.10 B RR0 46 13:12:54.53 +18:10:37.5 R0 0.7036 R R0 47 13:12:50.41 +18:12:25.2 R0 0.3354 16.791 0.3 V RR1 Dekany 48 13:13:14.31 +18:22:04.9 R0 0.3328 17.17 0.71 B RR1 Note 49 13:12:59.16 +18:14:35.6 R0 111.6 15.41 0.40 B SR Note 50 13:12:45.52 +18:11:29.0 R0 55.4 15.35 0.25 B SR Note 51 13:12:57.59 +18:10:50.1 R0 0.3552 RR1 52 13:12:55.90 +18:10:37.3 R0 0.3741 RR1 53 13:12:55.82 +18:10:35.9 R0 0.3891 RR1 54 13:12:54.29 +18:10:32.1 R0 0.3151 RR1 55 13:12:53.45 +18:10:37.1 R0 0.4434 RR1 Dekany 56 13:12:53.69 +18:09:26.6 R0 0.3289 RR1 57 13:12:55.55 +18:09:58.6 R0 0.5683 RR0 58 13:12:55.59 +18:09:31.5 R0 0.3550 RR1 59 13:12:56.66 +18:09:21.2 R0 0.3039 RR1 60 13:12:56.99 +18:09:36.9 R0 0.6447 RR0 61 -2.5 +6.9 XA 0.3795 RR1 62 -19.6 +26.4 XA 0.3599 RR1 63 +12.9 -3.5 XA 0.3104 RR1 64 -41 +9.6 XA 0.3196 RR1 65 +133.9 +53.3 XA SR? RGtip 66 +88.5 -1.6 XA SR? RGtip 67 +80.7 +4.2 XA SR? RGtip 68 +14.6 -101.6 XA SR? RGtip 69 +11.3 +15.4 XA SR? RGtip 70 -1.8 -21.9 XA SR? RGtip 71 13:12:54.5 +18:09:54.3 R0 0.3042 RR1 72 13:12:55.8 +18:09:50.6 R0 0.2542 RR1 73 13:13:03.38 +18:09:25.3 R0 0.0701 18.814 0.206 V SXPHE =JeonSXP1 74 13:12:49.71 +18:07:26.0 R0 0.0454 18.915 0.236 V SXPHE =JeonSXP2 75 13:13:09.44 +18:09:40.1 R0 0.0442 19.366 0.200 V SXPHE =JeonSXP6 76 13:13:05.01 +18:08:36.1 R0 0.0415 19.522 0.194 V SXPHE =JeonSXP7 77 13:13:20.8 +18:15:34.9 R0 0.0769 18.478 0.6 V SXPHE 78 13:12:49.8 +18:08:56.0 R0 0.0449 SXPHE 79 13:12:46.6 +18:11:36.9 R0 0.0463 SXPHE 80 13:12:57.4 +18:10:13.8 R0 0.0674 SX? 81 13:13:02.7 +18:06:29.4 R0 0.0714 17.454 0.1 V SX? 82 13:12:56.5 +18:13:10.0 R0 0.0221 SX? 83 13:12:50.1 +18:07:42.9 R0 0.1247 SX? 84 13:12:36.2 +18:07:32.3 R0 22.4 14.766 0.01 V Lb? 85 13:12:50.7 +18:10:39.7 R0 19.8 13.962 0.02 V Lb? 86 13:12:52.7 +18:10:28.0 R0 22.2 14.2 V Lb? 87 13:13:01.95 +18:10:13.4 R0 0.0479 19.248 0.204 V SXPHE =JeonSXP3 88 13:13:19.09 +18:06:40.7 R0 0.0500 19.171 0.138 V SXPHE =JeonSXP4 89 13:13:08.21 +18:07:38.7 R0 0.0435 19.441 0.082 V SXPHE =JeonSXP5 90 13:12:52.77 +18:04:58.4 R0 0.0385 18.959 0.060 V SXPHE =JeonSXP8 ========================================================================== Supplementary Notes and References The RA and dec listed above for all of the variables numbered up to V60 (except V48-50 -see notes) were derived by Evstigneeva et al. (1997, Ast Let, 23, 395). V51-60 were originally anounced as V1-5 and V7-11 by Kravtsov (1990, Ast Tsirk 1544, 21) and the numbers 51-60 were assigned later by Kopacki (2000, A&A 358, 547). V1-47: Periods, magnitudes, amplitudes and variability types for V1-47 are from Goranskij (1976, Peremennye Zvez Pril Vol 3, No. 13, 1) unless designated "Kopacki" or "Dekany" in the remarks column, in which case they were from Kopacki (2000, A&A 358, 547) or from Dekany & Kovacs (2009, A&A 507, 803; arXiv:0909.0472v1). V51-70: Periods, magnitudes, amplitudes and variability types for V51-70 are from Kopacki (2000, A&A 358, 547) unless designated "Dekany" in the remarks column, in which case they were from Dekany & Kovacs (2009, A&A 507, 803; arXiv:0909.0472v1). No magnitudes or amplitudes were derived for V51-70 because the frames were reduced using the image subtraction method. Kopacki's paper gave a good summary of previous investigations of the variables in M53. He also published an ID chart covering an area of about 6 by 4 arcmin and labelled all of the variables in the field of view. V71-72 and V77-86: All the data are from Dekany & Kovacs (2009, A&A 507, 803; arXiv:0909.0472v1). V73-76 and V87-90: All the data are from Jeon et al. (2003, AJ 125, 3165). Dekany & Kovacs (2009) derived periods for V73-76 that were in agreement with those of Jeon et al. ====================================== Notes on individual stars V22, V34, V39: van den Hoven van Genderen (1947, BAN 10, 241) stated that the variability of V22, V34 and V39 seemed very doubtful and Cuffey's (1965, AJ 70, 732) analysis confirmed this. However, Dekany & Kovacs (2009, A&A 507, 803; arXiv:0909.0472v1) found that V34 was an RR Lyrae with low ampltude and they derived a period. V28: Evstigneeva et al. (1997, Ast Let, 23, 395) that the y value (+459.0") listed in all Sawyer Hogg's catalogs (1939, 1955, 1973) and in our electronic versions was incorrect. Baade's (1931, Hamburg Mitt Volume 6, page 67) discovery paper listed y=+399.0". V44: Evstigneeva et al. (1997, Ast Let, 23, 395) noted that the sign of the x coordinate was wrong (+53" should be -53") in the discovery paper by van den Hoven van Genderen (1947, BAN 10, 241) and the incorrect value was listed in Sawyer Hogg's (1955, 1973) 2nd and 3rd catalogs and again in our on-line version. V48, V49, V50: Periods and amplitudes for V48-50 are from Cuffey (1966, AJ 71, 514) and the mean magnitudes are from Cuffey (1965, AJ 70, 732). The RA and dec were provided by Samus (2009 - private communication). Kopacki (2000, A&A 358, 547) pointed out that the x,y coordinates listed for these three stars in Helen Hogg's 3rd catalog were incorrect. These errors were repeated in our original electronic catalogs and the RA and dec derived by Evstigneeva et al. (1997, Ast Let 23, 395) were based on the erroneous coordinates. =============================================================================== Discovery of the variable stars in M53: V1-23 Shapley (1920, ApJ 52, 73) with x,y coordinates and an ID chart V24-40 Baade (1931, Hamburg Mitt Volume 6, page 67) with x,y coordinates V41-42 Grosse (1932, AN 246, 377) with an ID chart. Variables 1-40 were also identified on the chart. V43-46 van den Hoven van Genderen (1947, BAN 10, 241) with x,y coordinates and an ID chart. She also published x,y coordinates for V41 and V42 and included them on the ID chart. V47 Margoni (1964, Mem Soc Ast It 35, 2 = Asiago-Padova Cont 150) with x,y coordinates and an ID chart. V48-50 = Cuffey's V47-V49 = stars 4-7-8, 4-4-16 and K Cuffey (1965, AJ 70, 741) wth ID chart. The numbers V48-V50 were assigned by Sawyer Hogg (1973) in her 3rd catalog. Sawyer Hogg also derived x,y coordinates for these stars, but Kopacki (2000, A&A 358, 547) discovered that they were incorrect and that the RA and dec computed by Evstigneeva et al. (1997, Ast Let 23, 395) were based on these incorrect values. Samus (private communication 2009) has computed the correct RA and dec for these three stars. They all correspond to 2MASS positions. V51-60 = Kravtsov's V1-5,7-11 Kravtsov (1990, Ast Tsirk 1544, 21) with x,y coordinates and an ID chart. The numbers V51-60 were assigned by Kopacki (2000, A&A 358, 547) Kopacki did not assign a new number for Kravtsov's V6 because it was the same star as V44. V61-70 Kopacki (2000, A&A 358, 547) with x,y coordinates and an ID chart. V71-72 Dekany & Kovacs (2009, A&A 507, 803; arXiv:0909.0472v1) with RA & dec V73-76 = SXP1, SXP2, SXP6, SXP7 Jeon et al. (2002. ASP Conf 259, 140) and Jeon et al. (2003, AJ 125, 3165). The AJ paper included the RA, dec and an ID chart. The numbers V73-76 were assigned by Dekany & Kovacs (2009). V77-86 Dekany & Kovacs (2009, A&A 507, 803; arXiv:0909.0472v1) with RA & dec V87-90 = SXP3, SXP4, SXP5, SXP8 Jeon et al. (2002. ASP Conf 259, 140) and Jeon et al. (2003, AJ 125, 3165). The AJ paper included the RA, dec and an ID chart. The numbers V87-90 have been assigned in the September 2009 update to the CVSGC electronic catalog. These stars were not studied by Bekany & Kovacs because V87 was not resolved on their frames and the amplitudes of V88-90 were too low to be identified in their data. ===========================================================================