2012MNRAS.420.1333A

Query : 2012MNRAS.420.1333A

2012MNRAS.420.1333A - Mon. Not. R. Astron. Soc., 420, 1333-1346 (2012/February-3)

The unusually large population of Blazhko variables in the globular cluster NGC 5024 (M53).

ARELLANO FERRO A., BRAMICH D.M., FIGUERA JAIMES R., GIRIDHAR S. and KUPPUSWAMY K.

Abstract (from CDS):

We report the discovery of amplitude and phase modulations typical of the Blazhko effect in 22 RRc and nine RRab type RR Lyrae stars in NGC 5024 (M53). This brings the confirmed Blazhko variables in this cluster to 23 RRc and 11 RRab stars, which represent 66 and 37 per cent of the total population of RRc and RRab stars in the cluster, respectively, making NGC 5024 the globular cluster with the largest presently known population of Blazhko RRc stars. We place a lower limit of 52 per cent on the overall incidence rate of the Blazhko effect among the RR Lyrae population in this cluster. New data have allowed us to refine the pulsation periods. The limitations imposed by the time span and sampling of our data prevent reliable estimations of the modulation periods. The amplitudes of the modulations range between 0.02 and 0.39 mag. The RRab and RRc are neatly separated in the colour–magnitude diagram, and the RRc Blazhko variables are on average redder than their stable counterparts; these two facts may support the hypothesis that the horizontal branch (HB) evolution in this cluster is towards the red and that the Blazhko modulations in the RRc stars are connected with the pulsation mode switch.

Based on observations collected at the Indian Astrophysical Observatory, Hanle, India.


Abstract Copyright: 2011 The Authors Monthly Notices of the Royal Astronomical Society2011 RAS

Journal keyword(s): stars: variables: RR Lyrae - globular clusters: individual: NGC 5024

VizieR on-line data: <Available at CDS (J/MNRAS/420/1333): table2.dat table1.dat table6.dat>

Simbad objects: 83

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Number of rows : 83
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2026 		#notes
1 NGC 362 GlC 01 03 14.26 -70 50 55.6     6.58     ~ 1167 0
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
3 NGC 3201 2203 RR* 10 17 13.3316712312 -46 24 28.757404008   14.88 14.75     ~ 16 0
4 NGC 3201 GlC 10 17 36.82 -46 24 44.9           ~ 1001 0
5 M 68 GlC 12 39 27.98 -26 44 38.6     7.96     ~ 1069 0
6 Cl* NGC 5024 RLB 899 RR* 13 12 39.0820717032 +18 05 42.289234584     16.888   16.362 ~ 24 0
7 Cl* NGC 5024 RLB 544 RR* 13 12 40.3428513504 +18 11 53.940451020     16.848   16.426 ~ 14 0
8 Cl* NGC 5024 RLB 860 RR* 13 12 41.4240836712 +18 07 23.564778996     16.856   16.306 ~ 24 0
9 Cl* NGC 5024 SAW V33 RR* 13 12 43.8614927160 +18 10 12.913338396       17.090   ~ 17 0
10 Cl* NGC 5024 RLB 842 RR* 13 12 43.8870020376 +18 07 26.227658064   17.3 16.69   16.417 ~ 17 0
11 Cl* NGC 5024 RLB 928 RR* 13 12 45.3858072792 +18 09 01.927039464           ~ 20 0
12 Cl* NGC 5024 SAW V34 RR* 13 12 45.7037551752 +18 06 25.971558012     16.928   16.614 ~ 11 0
13 Cl* NGC 5024 RLB 558 RR* 13 12 45.7241145960 +18 10 55.420834548     16.837   16.374 ~ 21 0
14 Cl* NGC 5024 RLB 569 RR* 13 12 46.1951386704 +18 06 39.065653980     16.59     ~ 16 0
15 Cl* NGC 5024 SAW V24 RR* 13 12 47.2875570192 +18 09 32.328501552           ~ 12 0
16 Cl* NGC 5024 RLB 695 RR* 13 12 47.7369704808 +18 08 35.768280732     16.712   16.296 ~ 15 0
17 Cl* NGC 5024 SAW V18 RR* 13 12 48.6796028592 +18 10 13.079658036       19.567   ~ 14 0
18 Cl* NGC 5024 RLB 552 RR* 13 12 50.2838513256 +18 07 00.741045432     16.59   16.495 ~ 18 0
19 Cl* NGC 5024 RLB 624 RR* 13 12 50.4230100336 +18 12 24.542278524     16.791   16.419 ~ 12 0
20 Cl* NGC 5024 SAW V42 RR* 13 12 50.5527590472 +18 10 19.941037068       18.499   ~ 19 0
21 Cl* NGC 5024 RLB 818 RR* 13 12 51.3766149048 +18 07 45.345228996     16.848   16.401 ~ 21 0
22 Cl* NGC 5024 KRA 6 RR* 13 12 51.6689432136 +18 10 00.492431376           ~ 13 0
23 Cl* NGC 5024 SAW V37 RR* 13 12 52.2843787536 +18 11 05.268563880           ~ 18 0
24 Cl* NGC 5024 SAW V64 RR* 13 12 52.5229024104 +18 10 12.425633544           ~ 10 0
25 Cl* NGC 5024 SAW V43 RR* 13 12 53.0856927234 +18 10 55.380698938           ~ 18 0
26 Cl* NGC 5024 KRA 5 RR* 13 12 53.4590469600 +18 10 36.498432216           ~ 10 0
27 Cl* NGC 5024 SAW V91 RR* 13 12 53.6218474104 +18 10 13.458944856           ~ 4 0
28 Cl* NGC 5024 KRA 7 RR* 13 12 53.6938394616 +18 09 25.934613228           ~ 11 0
29 Cl* NGC 5024 SAW V62 RR* 13 12 53.9992578096 +18 10 29.814556620           ~ 7 0
30 Cl* NGC 5024 KRA 4 RR* 13 12 54.381 +18 10 31.65           ~ 9 0
31 Cl* NGC 5024 SAW V71 RR* 13 12 54.3921224405 +18 09 53.893833786           ~ 7 0
32 Cl* NGC 5024 SAW V46 RR* 13 12 54.5370535762 +18 10 37.006020536           ~ 18 0
33 Cl* NGC 5024 SAW V92 RR* 13 12 54.9092376408 +18 10 50.187287172           ~ 4 0
34 Cl* NGC 5024 SAW V45 RR* 13 12 55.1600974464 +18 09 27.363295080           ~ 19 0
35 Cl* NGC 5024 SAW V61 RR* 13 12 55.212 +18 10 10.31           ~ 7 0
36 M 53 GlC 13 12 55.25 +18 10 05.4     7.79     ~ 907 0
37 Cl* NGC 5024 KRA 8 RR* 13 12 55.5601859088 +18 09 58.259548224       16.702   ~ 12 0
38 Cl* NGC 5024 KRA 9 RR* 13 12 55.5977644752 +18 09 30.930057576           ~ 12 0
39 Cl* NGC 5024 KRA 3 RR* 13 12 55.806 +18 10 36.02       17.278   ~ 11 0
40 Cl* NGC 5024 SAW V40 RR* 13 12 55.8607307784 +18 11 54.667442148           ~ 14 0
41 Cl* NGC 5024 KRA 2 RR* 13 12 55.9171133736 +18 10 36.949075428           ~ 12 0
42 Cl* NGC 5024 SAW V72 RR* 13 12 55.9403616102 +18 09 52.232262368           ~ 8 0
43 Cl* NGC 5024 SAW V63 RR* 13 12 56.2988126640 +18 10 00.715890972           ~ 9 0
44 Cl* NGC 5024 RLB 469 RR* 13 12 56.3408877360 +18 07 13.760968764     16.971   16.392 ~ 23 0
45 Cl* NGC 5024 KRA 10 RS* 13 12 56.6678751648 +18 09 20.775085920           ~ 11 0
46 Cl* NGC 5024 SAW V41 RR* 13 12 56.7564886800 +18 11 08.413897812           ~ 16 0
47 Cl* NGC 5024 KRA 11 RR* 13 12 57.0005518032 +18 09 36.558084024           ~ 16 0
48 Cl* NGC 5024 RLB 668 RR* 13 12 57.1401640872 +18 07 40.482305724     16.17   16.192 ~ 17 0
49 Cl* NGC 5024 KRA 1 RR* 13 12 57.5888398268 +18 10 49.537736038       19.842   ~ 10 0
50 Cl* NGC 5024 SAW V31 RR* 13 12 59.5675108800 +18 10 04.823864148           ~ 18 0
51 Cl* NGC 5024 RLB 884 RR* 13 13 00.0765218640 +18 09 25.053246180           ~ 18 0
52 Cl* NGC 5024 RLB 849 RR* 13 13 00.4260277248 +18 11 05.014079484           ~ 19 0
53 Cl* NGC 5024 RLB 441 RR* 13 13 00.8632576128 +18 11 29.933116368     16.69     ~ 22 0
54 Cl* NGC 5024 RLB 782 RR* 13 13 02.3383396440 +18 08 35.971100232     16.825   16.434 ~ 14 0
55 Cl* NGC 5024 RLB 538 RR* 13 13 02.4200626584 +18 12 37.696450068     16.943   16.501 ~ 16 0
56 Cl* NGC 5024 RLB 757 RR* 13 13 03.2872251240 +18 15 10.338228612     16.879   16.465 ~ 15 0
57 Cl* NGC 5024 RLB 750 RR* 13 13 03.9044305056 +18 10 19.948004940     16.819   16.297 ~ 20 0
58 Cl* NGC 5024 RLB 756 RR* 13 13 04.2608086704 +18 08 46.958663076     16.782   16.194 ~ 16 0
59 Cl* NGC 5024 RLB 779 RR* 13 13 04.4104593672 +18 10 37.312693680     16.78   16.224 ~ 21 0
60 Cl* NGC 5024 RLB 560 RR* 13 13 07.0126262664 +18 09 26.306783172     16.880   16.443 ~ 17 0
61 Cl* NGC 5024 RLB 593 RR* 13 13 12.3847606608 +18 13 55.386643152     16.78   16.552 ~ 17 0
62 NGC 5139 GlC 13 26 47.28 -47 28 46.1           ~ 3677 0
63 NGC 5272 632 RR* 13 42 09.4438811064 +28 17 30.279932088   15.766 15.581   15.296 ~ 24 0
64 NGC 5272 679 RR* 13 42 09.8471057664 +28 25 53.197646988   15.787 15.581   15.299 ~ 24 0
65 M 3 GlC 13 42 11.62 +28 22 38.2     6.39     ~ 2593 0
66 NGC 5272 1153 RR* 13 42 17.4714593736 +28 23 29.495239260   16.019 15.791     ~ 18 0
67 NGC 5904 298 RR* 15 18 21.4947933240 +02 04 38.361897192   14.84 15.106   14.648 ~ 29 0
68 M 5 GlC 15 18 33.22 +02 04 51.7     5.95     ~ 2095 0
69 Cl* NGC 5904 KUST 948 RR* 15 18 41.2301034960 +02 11 07.371692952     14.63     ~ 21 0
70 NGC 5904 886 RR* 15 18 46.4975635104 +02 06 10.966828788   15.15 15.06     ~ 25 0
71 V* RW Dra RR* 16 35 31.6036225488 +57 50 23.167269564   11.87 11.48     kA7hF6.5 164 0
72 NGC 6362 38 ** 17 31 32.03856 -67 02 02.1948       14.722   ~ 8 0
73 NGC 6362 GlC 17 31 54.99 -67 02 54.0           ~ 637 0
74 OGLE MM5-A V20 RR* 17 46 49.2545625000 -34 52 01.803165240     16.862   15.674 ~ 12 0
75 V* S Ara RR* 17 59 10.7331786216 -49 26 00.455959896   11.01 10.73     kA3hA7 119 0
76 V* V4111 Sgr RR* 18 03 07.9499553065 -29 44 06.669000918   17.0 16.731   15.737 ~ 18 0
77 V* V4113 Sgr RR* 18 03 29.8806707208 -30 01 56.637184800   17.1 16.680   15.762 ~ 19 0
78 V* V1127 Aql RR* 19 24 00.1009965936 +01 41 48.516499608   15.997 14.991 15.188   ~ 41 1
79 V* RR Lyr RR* 19 25 27.9129605304 +42 47 03.693258204   7.36   7.6   kA3hF0 951 0
80 ATO J291.6554+01.2262 RR* 19 26 37.3219673784 +01 13 34.777336800   15.6 15.928 14.8   ~ 25 0
81 Cl* NGC 6362 SAW V10 RR* ~ ~           ~ 9 0
82 Cl* NGC 6362 SAW V6 RR* ~ ~   15.53       ~ 8 0
83 NAME Galactic Bulge reg ~ ~           ~ 4794 0

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