2013MNRAS.430.1334M

Query : 2013MNRAS.430.1334M

2013MNRAS.430.1334M - Mon. Not. R. Astron. Soc., 430, 1334-1343 (2013/April-1)

Cluster membership probability: polarimetric approach.

MEDHI B.J. and TAMURA M.

Abstract (from CDS):

Interstellar polarimetric data of the six open clusters Hogg 15, NGC 6611, NGC 5606, NGC 6231, NGC 5749 and NGC 6250 have been used to estimate the membership probability for the stars within them. For proper-motion member stars, the membership probability estimated using the polarimetric data is in good agreement with the proper-motion cluster membership probability. However, for proper-motion non-member stars, the membership probability estimated by the polarimetric method is in total disagreement with the proper-motion cluster membership probability. The inconsistencies in the determined memberships may be because of the fundamental differences between the two methods of determination: one is based on stellar proper motion in space and the other is based on selective extinction of the stellar output by the asymmetric aligned dust grains present in the interstellar medium. The results and analysis suggest that the scatter of the Stokes vectors q (per cent) and u (per cent) for the proper-motion member stars depends on the interstellar and intracluster differential reddening in the open cluster. It is found that this method could be used to estimate the cluster membership probability if we have additional polarimetric and photometric information for a star to identify it as a probable member/non-member of a particular cluster, such as the maximum wavelength value (λmax), the unit weight error of the fit (σ1), the dispersion in the polarimetric position angles (), reddening (E(B - V)) or the differential intracluster reddening (ΔE(B - V)). This method could also be used to estimate the membership probability of known member stars having no membership probability as well as to resolve disagreements about membership among different proper-motion surveys.

Abstract Copyright: © 2013 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2013)

Journal keyword(s): polarization - dust, extinction - open clusters and associations: individual (Hogg 15, NGC 6611, NGC 5606, NGC 6231, NGC 5749, NGC 6250)

Simbad objects: 130

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Number of rows : 130
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 Cl* Hogg 15 M 23 * 12 43 20.6374840752 -63 05 48.847214400   15.18 14.34     ~ 8 0
2 Cl* Hogg 15 M 22 * 12 43 23.3827526160 -63 06 51.124018140   15.01 14.07     ~ 5 0
3 Cl* Hogg 15 M 10 * 12 43 31.1837671968 -63 05 25.190673684   15.76 14.84     ~ 8 0
4 Cl Hogg 15 2 * 12 43 32.5897917106 -63 05 55.928492745   12.85 12.11     OB+ 14 0
5 Cl* Hogg 15 M 8 * 12 43 35.08 -63 06 08.5   15.64 14.35     ~ 5 0
6 Cl* Hogg 15 M 5 * 12 43 35.8814963136 -63 06 05.094473652   13.13 12.21     OB+ 15 0
7 Cl* Hogg 15 M 6 * 12 43 36.4402479619 -63 06 01.240414346   13.68 12.82     ~ 7 0
8 Cl Hogg 15 OpC 12 43 36.8 -63 06 01           ~ 61 0
9 Cl* Hogg 15 M 14 * 12 43 37.41 -63 06 14.4   15.79 14.81     ~ 5 0
10 Cl* Hogg 15 M 11 * 12 43 37.52 -63 05 51.9   16.54 15.68     ~ 5 0
11 Cl Hogg 15 16 * 12 43 37.8934931304 -63 07 34.138001496   14.6 14.0     ~ 5 0
12 Cl* Hogg 15 M 21 * 12 43 41.3980204488 -63 05 47.324273496   15.61 14.68     ~ 7 0
13 Cl* Hogg 15 M 15 * 12 43 43.62 -63 06 54.0   16.32 14.94     ~ 5 0
14 Cl* Hogg 15 M 19 * 12 43 43.87 -63 06 19.7   15.55 14.70     ~ 5 0
15 Cl* Hogg 15 M 17 * 12 43 44.8238901504 -63 07 10.268084424   15.43 14.73     ~ 4 0
16 Cl* Hogg 15 M 20 * 12 43 45.40 -63 05 54.8   15.64 14.77     ~ 5 0
17 HD 311884 WR* 12 43 50.9991209208 -63 05 14.812489320 11.45 11.64 10.81 10.59   WN6+O5V 175 0
18 Cl Hogg 15 4 * 12 43 56.4493523304 -63 04 52.403492244   13.41 12.30     ~ 13 0
19 HD 126357 bC* 14 27 08.7344355960 -59 44 11.279134428 8.66 9.56 9.26 9.62   B1III 34 0
20 Cl* NGC 5606 VBFP 34 * 14 27 40.9013727264 -59 36 45.179328600 13.65 13.70 13.28 13.00 12.66 ~ 7 0
21 CD-59 5257 * 14 27 44.0711003880 -59 37 59.743837488 9.28 9.75 9.48 9.99 9.26 B1IV 22 0
22 NGC 5606 12 * 14 27 44.6725792800 -59 38 31.325408196   12.61 12.15 11.92   ~ 5 0
23 Cl* NGC 5606 VBFP 129 * 14 27 46.1811071760 -59 39 36.616727376 13.46 13.53 13.15 12.90 12.61 ~ 7 0
24 HD 126449 * 14 27 46.7435232072 -59 37 56.601697728 8.36 9.08 8.78 8.54 8.32 B0/1(III) 26 0
25 NGC 5606 13 * 14 27 47.1675746736 -59 38 54.993985764 12.94 13.16 12.83 12.64 12.35 ~ 8 0
26 NGC 5606 11 * 14 27 48.3031622496 -59 38 30.516813852   13.25 12.92 12.66   ~ 5 0
27 NGC 5606 5 * 14 27 49.1336585016 -59 37 39.566274204 10.71 10.90 10.93 11.04   OB- 11 0
28 NGC 5606 OpC 14 27 49.7 -59 37 45           ~ 109 0
29 NGC 5606 6 * 14 27 51.0393529224 -59 37 52.191072984   12.26 11.91 11.75   ~ 7 0
30 Cl* NGC 5606 VF 24 * 14 27 52.132 -59 39 53.84           ~ 2 0
31 NGC 5606 9 * 14 27 52.7385070488 -59 37 15.799949220   13.12 12.78 12.55   ~ 7 0
32 Cl* NGC 5606 VF 21 * 14 27 52.8376496520 -59 39 07.251050664           ~ 4 0
33 NGC 5606 10 * 14 27 52.9301631960 -59 38 35.138164776   14.91 14.32     ~ 3 0
34 NGC 5606 8 Pu* 14 27 53.6146168920 -59 37 54.114088440 13.35 13.38 13.07 12.89 12.60 ~ 7 0
35 NGC 5606 7 * 14 27 53.6210478336 -59 38 08.275390368 12.42 12.75 12.48 12.27 12.00 ~ 8 0
36 CD-59 5259 Pu* 14 27 55.5158658696 -59 37 30.770398776 9.59 10.35 9.98 10.09 9.45 B0IV 33 0
37 CD-59 5260 Pu* 14 27 57.3562970232 -59 38 07.571192676 9.52 10.27 9.92 10.03 9.37 B0IV 35 0
38 Cl* NGC 5606 VF 36 * 14 28 07.7391305784 -59 36 35.960543244 12.32 12.64 12.30 12.08 11.78 ~ 6 0
39 Cl* NGC 5749 CL 82 * 14 48 29.91 -54 31 38.1   14.0 13.4     B9V 4 0
40 HD 130152 * 14 48 31.9571043744 -54 28 24.318911928   9.85 9.67     B6Ib/II 24 0
41 CPD-54 6168 * 14 48 44.8583431248 -54 31 35.649602400   11.09 10.84     ~ 7 0
42 NGC 5749 OpC 14 48 46.6 -54 30 43     8.8     ~ 69 0
43 Cl* NGC 5749 CL 75 * 14 48 47.2342462128 -54 30 52.644010608   12.742 12.390     ~ 8 0
44 Cl* NGC 5749 CL 31 * 14 48 54.9644597376 -54 30 48.151100916   13.681 11.644     ~ 3 0
45 CPD-53 6113 * 14 48 58.8429471720 -54 27 56.088494856   11.84 11.57     ~ 9 0
46 CPD-54 6169 * 14 49 00.6021810888 -54 31 59.144773656   11.10 10.82     ~ 8 0
47 CPD-53 6114 Pu* 14 49 01.4053021027 -54 30 50.856890290   11.37 11.16     ~ 6 0
48 HD 130244 * 14 49 02.2270314648 -54 27 45.992474856   10.45 10.25     A0V 15 0
49 NGC 5749 2 * 14 49 02.9396562696 -54 34 33.308247324   12.20 12.45     ~ 6 0
50 CPD-54 6170 Pu* 14 49 04.6159428984 -54 32 07.709291808   11.62 11.62     ~ 3 0
51 CPD-53 6117 * 14 49 04.6710090960 -54 30 26.675660988   11.09 10.85     ~ 5 0
52 CPD-53 6119 * 14 49 09.5189988360 -54 27 49.212473184   11.73 11.47     ~ 6 0
53 NGC 5749 5 * 14 49 09.6265002384 -54 30 46.198350000   13.369 11.941     ~ 3 0
54 Cl* NGC 5749 CL 46 * 14 49 14.8508252208 -54 25 26.874685308   13.162 11.873     ~ 3 0
55 NAME Sco OB 1 As* 16 53.5 -41 57           ~ 222 0
56 HD 326328 SB* 16 53 45.5874473424 -41 49 09.633232164 9.792 10.382 10.213   9.857 B3 41 0
57 HD 152200 SB* 16 53 51.6564464880 -41 50 32.716447224 7.744 8.488 8.391 9.31 8.152 O9.7IV(n) 73 0
58 NGC 6231 16 * 16 53 52.8576222216 -41 45 18.584778708 15.090 12.963 11.165   9.214 ~ 7 0
59 V* V945 Sco bC* 16 53 54.5203569984 -41 52 14.960561412 9.090 9.745 9.575 9.618 9.260 B1V 45 0
60 HD 152219 SB* 16 53 55.6078109256 -41 52 51.496403268 6.950 7.705 7.569   7.267 O9.5III(n) 114 0
61 HD 152235 s*b 16 53 58.8528412848 -41 59 39.577848180 6.47 6.92 6.38 5.84 5.42 B0.5Ia 205 0
62 CPD-41 7712 Y*? 16 54 00.3929167800 -41 52 43.523646564 8.607 9.298 9.158   8.838 B1V 35 0
63 V* V946 Sco bC* 16 54 01.7631666120 -41 51 11.868345252 9.890 10.471 10.281 10.327 9.927 B2IV-V 49 0
64 HD 152234 s*b 16 54 01.8373785611 -41 48 22.987399147 4.92 5.64 5.45     B0.5Ia 201 0
65 2MASS J16540315-4151492 Y*? 16 54 03.1543694544 -41 51 49.267424952 10.675 11.144 10.907 11.9 10.528 B2-3V 25 0
66 NGC 6231 1 Y*? 16 54 03.5029815552 -41 42 52.052270868 11.900 12.222 11.950   11.522 ~ 13 0
67 HD 152233 SB* 16 54 03.5909222280 -41 47 29.841281484 5.93 6.72 6.59     O6II(f) 202 0
68 NGC 6231 194 Y*O 16 54 03.8074799328 -41 45 48.399381972 11.365 11.722 11.459   11.055 B3.5V 14 0
69 CD-41 11030 SB* 16 54 05.0795262120 -41 50 06.929151792 8.924 9.575 9.457   9.201 B1V 49 0
70 CD-41 11032 SB* 16 54 06.9496123464 -41 49 23.360333088 8.93 9.60 9.512 10.81 9.256 B0.5V 42 0
71 CD-41 11031 Y*? 16 54 07.5342145320 -41 44 40.655325588 9.443 10.051 9.887   9.566 B0V 29 0
72 HD 326340 Y*? 16 54 09.0228207192 -41 58 00.563537352 9.536 10.146 9.930 10.11 9.500 B5 32 0
73 CPD-41 7727 SB* 16 54 09.2737061088 -41 48 41.072216580 8.964 9.564 9.424   9.134 B1V 40 0
74 HD 152248 Y*O 16 54 10.0618206816 -41 49 30.139291596 5.56 6.15 6.088     O7Iabf+O7Ib(f) 270 0
75 CD-41 11034 Y*? 16 54 11.3119116264 -41 48 53.965557072 8.878 9.546 9.335 9.744 8.943 B1V 45 0
76 CD-41 11037 SB* 16 54 13.2253067352 -41 50 32.518100184 7.21 8.08 7.90     O9IV 78 0
77 CPD-41 7734 Y*? 16 54 14.2460503200 -41 55 01.326705420 10.103 10.616 10.331 10.25 9.801 B0Vn 29 0
78 NGC 6231 OpC 16 54 14.4 -41 48 53           ~ 562 0
79 NGC 6231 189 SB* 16 54 16.8013206864 -41 45 08.349698880 11.732 11.847 11.573   11.118 B8-9V 18 0
80 V* V964 Sco bC* 16 54 18.3200772432 -41 51 35.651104416 9.126 9.776 9.603 9.61 9.290 B0.5V 63 0
81 HD 326339 Y*? 16 54 19.3229318352 -41 57 30.961268928 10.136 10.501 10.108   9.505 B3 27 0
82 HD 152270 WR* 16 54 19.6991292072 -41 49 11.531710092 6.26 6.80 6.597 6.72 6.39 WC7+O5-8 315 0
83 CD-41 11042 Y*O 16 54 19.8364084848 -41 50 09.378605616 7.733 9.02 8.80 9.23 7.859 O9.5IV 108 0
84 V* V1208 Sco Y*O 16 54 21.3090092232 -41 51 41.766233904 9.293 9.91 9.708 9.96 9.344 B0-2V 52 0
85 2MASS J16542604-4145543 Y*? 16 54 26.0457934152 -41 45 54.287973180 12.238 12.319 11.985   11.492 B8.5V 11 0
86 NGC 6231 105 * 16 54 26.1959411784 -41 53 20.587796232 11.160 11.429 11.088   10.572 ~ 11 0
87 V* V1212 Sco dS* 16 54 31.2204545496 -41 55 28.604944992 10.728 10.401 9.945 9.86 9.347 F0III 28 0
88 HD 152314 ** 16 54 32.0048577720 -41 48 18.848961036 7.256 7.974 7.749 9.01 7.446 O9IV 113 0
89 V* V947 Sco bC* 16 54 36.0500878224 -41 53 38.119259292 9.45 10.06 9.78 10.06   B1V 53 0
90 WRAY 15-1560 Be* 16 54 37.4423306424 -41 47 07.186810056 11.905 12.100 11.771   11.227 Be 15 0
91 CPD-41 7755 Y*? 16 54 39.8785805856 -41 53 38.480359596 9.675 10.273 10.068 11.4 9.705 B1V 39 0
92 HD 329269 * 16 57 34.2138694920 -45 54 38.367496152   11.60 11.09     A 9 0
93 CD-45 11088 * 16 57 43.0433907077 -46 00 27.120516073 11.40 11.40 11.10 10.96   A0VI: 8 0
94 NGC 6250 OpC 16 57 55.2 -45 56 48   6.14 5.9     ~ 89 0
95 NGC 6250 13 * 16 58 01.5236135664 -45 55 35.455939500   13.5 13.1     ~ 10 0
96 NGC 6250 11 * 16 58 02.4810047280 -45 55 48.529325568   13.4 12.7     ~ 5 0
97 HD 152979 Be* 16 58 56.8068745416 -46 07 44.378476752 7.65 8.31 8.16     B0IVe 61 1
98 HD 329379 EB* 17 01 05.8734928128 -45 42 04.242080628   10.70 9.83 9.74   B0II 19 0
99 2MASS J18180928-1346545 Y*O 18 18 09.2846308800 -13 46 54.553563588 14.410 13.963 12.837   11.292 B0.5V 22 0
100 BD-13 4921 Y*O 18 18 29.9553677376 -13 49 57.614440296 9.81 10.41 9.91     B0.7V 58 0
101 LS IV -13 14 Y*O 18 18 32.2227699960 -13 48 48.055623228 11.343 11.024 10.296 10.38 9.430 O9V 56 0
102 BD-13 4923 Y*O 18 18 32.7310836576 -13 45 11.867150808 11.184 10.85 10.08 10.04 8.529 O4V((f+))+O7.5V 60 0
103 HD 168075 Y*O 18 18 36.0418343184 -13 47 36.449731536 8.62 9.22 8.77 9.45   O7V(n)((f))z 149 0
104 HD 168076 Y*O 18 18 36.4205083536 -13 48 02.420915796 8.12 8.72 8.25 7.62 7.21 O4III(f) 209 0
105 NGC 6611 223 Y*O 18 18 37.8647752080 -13 46 35.150559996 11.44 11.80 11.06     B1V 38 0
106 2MASS J18183846-1345561 Y*O 18 18 38.4653957232 -13 45 56.222199864 13.875 12.34 11.78   11.406 B1V 31 0
107 LS IV -13 19 Y*O 18 18 40.7577155496 -13 46 52.031251740 10.84 11.27 11.00     B1V 45 0
108 2MASS J18184096-1345296 Y*O 18 18 40.9652335752 -13 45 29.644481772 12.01 11.85 11.05     B0.5V 32 0
109 NGC 6611 275 * 18 18 42.1891056768 -13 46 52.017747852 12.19 12.51 11.96     B1.5V 25 0
110 BD-13 4928 Be* 18 18 42.7761777816 -13 46 50.969988732 10.05 10.604 10.044 10.23 9.345 O9.7IVnn 72 0
111 NGC 6611 297 Y*O 18 18 44.5246702680 -13 45 48.121323516 13.34 13.55 12.85     B1.5:V 32 0
112 NGC 6611 296 Y*O 18 18 44.6604719160 -13 47 56.406531264 12.589 12.350 11.718   10.947 B1.5V 33 0
113 NGC 6611 301 * 18 18 44.9814474504 -13 46 24.902605236 12.5 12.76 12.16     B2V 28 0
114 M 16 OpC 18 18 45.1 -13 47 31           ~ 1084 1
115 NGC 6611 307 Y*O 18 18 45.2535548376 -13 47 20.402438136 15.12 15.16 14.10     B1.5Ve 23 0
116 NGC 6611 311 Em* 18 18 45.60 -13 47 53.1 13.4 13.30 12.74     B2.5Ve 21 0
117 NGC 6611 313 Y*O 18 18 46.1329692120 -13 49 23.438011584   12.11 11.60     B5III 26 0
118 NGC 6611 343 EB* 18 18 49.3751453496 -13 46 50.032684956 12.4 12.646 11.792   10.461 B1V 27 0
119 NGC 6611 349 Y*? 18 18 50.5730358144 -13 47 33.950690700   13.01 11.61     G5III 18 0
120 LS IV -13 22 Em* 18 18 50.6843750856 -13 48 12.721046364 11.953 11.78 11.16   10.443 B1V 38 0
121 BD-13 4930 Y*O 18 18 52.6749052848 -13 49 42.634556148 9.04 9.71 9.45   8.968 O9.7V 116 0
122 NGC 6611 371 Y*O 18 18 53.0133037800 -13 46 45.082792452 14.577 14.067 13.379   12.388 B0.5Ve 31 0
123 NGC 6611 374 dS* 18 18 53.2682646360 -13 46 07.183104924 15.529 14.406 13.347   11.968 F 25 0
124 NGC 6611 388 Y*O 18 18 54.9467872320 -13 48 45.845086428   14.28 13.70     B 19 0
125 NGC 6611 402 * 18 18 56.0604766560 -13 46 25.706871876   12.39 11.16     K0II 18 0
126 HD 168137 Y*O 18 18 56.1894798360 -13 48 31.092549588 8.72 9.36 8.94 9.55   O8Vz 131 0
127 NGC 6611 411 * 18 18 56.97 -13 44 06.5   13.79 12.18     K0V 14 0
128 NGC 6611 444 Y*O 18 19 00.4286432088 -13 42 41.013464796 14.057 13.635 12.594   11.289 B1.5V 28 0
129 BD-13 4936 Ae* 18 19 11.0687166864 -13 56 43.087223148 9.73 10.281 9.763 10.27 8.824 B0/5e 58 0
130 NAME Sgr Arm PoG 19 00 -30.0           ~ 710 1

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