2023MNRAS.520.5487M

Query : 2023MNRAS.520.5487M

2023MNRAS.520.5487M - Mon. Not. R. Astron. Soc., 520, 5487-5505 (2023/April-3)

A CCD search for variable stars in the open cluster NGC 6611.

MICHALSKA G., KOLACZKOWSKI Z., LEITON R., SZEWCZYK O., KINEMUCHI K. and KALARI V.M.

Abstract (from CDS):

We present the results of the UBVIC variability survey in the young open cluster NGC 6611 based on observations obtained during 34 nights spanning one year. In total, we found 95 variable stars. Most of these stars are classified as periodic and irregular pre-main sequence (PMS) stars. The analysis of the JHKS 2MASS photometry and four-colour IRAC photometry revealed 165 Class II young stellar sources, 20 of which are irregular variables and one is an eclipsing binary. These classifications, complemented by JHK UKIDSS photometry and riHα VPHAS photometry, were used to identify 24 candidates for classical T Tauri stars and 30 weak-lined T Tauri stars. In addition to the PMS variables, we discovered eight δ Scuti candidates. None of these were previously known. Furthermore, we detected 17 eclipsing binaries where two were previously known. Based on the proper motions provided by the Gaia EDR3 catalogue, we calculated the cluster membership probabilities for 91 variable stars. For 61 variables, a probability higher than 80 per cent was determined, which makes them cluster members. Only 25 variables with a probability less than 20 per cent were regarded to be non-members.

Abstract Copyright: © 2023 The Author(s) Published by Oxford University Press on behalf of Royal Astronomical Society

Journal keyword(s): binaries: eclipsing - stars: pre-main sequence - stars: variables: Scuti - stars: variables: T Tauri, Herbig Ae/Be - open clusters and associations: individual: NGC 6611

Simbad objects: 109

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Number of rows : 109
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 NAME TAU-AUR T ASSOC Cl* 04 32 33 +26 04.6           ~ 48 0
2 Cl Stock 8 OpC 05 27 54.1 +34 28 41           ~ 93 0
3 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
4 NGC 2244 OpC 06 32 06.9 +04 54 19           ~ 673 1
5 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
6 NGC 2282 RNe 06 46 51 +01 18.9   10       ~ 51 2
7 NAME Lupus Complex SFR 16 03 -38.1           ~ 851 0
8 NGC 6530 OpC 18 04 31 -24 21.5           ~ 443 0
9 NGC 6611 59 V* 18 18 14.1509216664 -13 43 45.603419340   16.291 15.341   14.202 ~ 4 0
10 NGC 6611 94 EB* 18 18 21.7764334980 -13 55 05.147155779 13.952 13.697 12.821   11.859 ~ 8 0
11 2MASS J18182607-1347356 Y*O 18 18 26.0490159144 -13 47 35.869271856 22.455 21.243 18.864   16.093 ~ 6 0
12 NGC 6611 135 dS* 18 18 27.7938092664 -13 55 04.856803284 14.176 13.63 12.93   11.921 F0III-V 8 0
13 NGC 6611 154 V* 18 18 29.5404127416 -13 42 30.326463576 17.441 16.861 15.649   14.004 ~ 3 0
14 Cl* NGC 6611 GMD 891 Y*O 18 18 30.4058469288 -13 51 47.234250684 19.930 18.499 16.814   14.893 ~ 10 0
15 2MASS J18183054-1354459 Y*O 18 18 30.5437532291 -13 54 46.009098045     18.602   16.354 ~ 5 0
16 2MASS J18183076-1343466 Y*O 18 18 30.7699280592 -13 43 46.625496348 21.624 21.515 19.358   16.387 ~ 5 0
17 2MASS J18183227-1347026 Y*O 18 18 32.2775997288 -13 47 02.705669304   21.803 19.622   16.959 ~ 4 0
18 ATO J274.6362-13.9133 EB* 18 18 32.6927612331 -13 54 47.803092343   18.102 16.813   15.444 ~ 2 0
19 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
20 2MASS J18183328-1354111 Y*O 18 18 33.2833307448 -13 54 11.167252632 16.662 16.012 14.838   13.515 ~ 7 0
21 Cl* NGC 6611 GMD 1147 Y*O 18 18 33.3665366856 -13 46 56.442853560 20.304 19.143 17.753   16.264 ~ 5 0
22 2MASS J18183371-1340588 Y*O 18 18 33.7211826576 -13 40 58.827802656 14.44 14.604 13.019   10.864 B0V 18 0
23 ISOGAL-P J181834.7-133948 EB* 18 18 34.63752 -13 39 48.7656   17.63 15.495   12.335 ~ 2 0
24 2MASS J18183555-1345581 Y*O 18 18 35.5578398928 -13 45 58.159478448 21.885 21.057 19.015   16.232 ~ 5 0
25 2MASS J18183622-1346191 Y*O 18 18 36.2324273280 -13 46 19.152995088 19.746 18.360 16.647   14.569 ~ 9 0
26 2MASS J18183713-1345057 Y*O 18 18 37.1433795312 -13 45 05.826160224   21.278 19.126   16.369 ~ 6 0
27 2MASS J18183742-1346078 Y*O 18 18 37.4272753632 -13 46 08.027579676 21.500 19.656 17.593   15.149 ~ 9 0
28 2MASS J18183756-1401127 V* 18 18 37.5585458729 -14 01 12.751344204           ~ 1 0
29 NGC 6611 221 dS* 18 18 37.6378754208 -13 45 13.223670624 16.771 15.651 14.463   12.789 B8Ve 20 0
30 2MASS J18183793-1351561 Y*O 18 18 37.9392527424 -13 51 56.240285580 21.990 20.588 18.374   15.682 ~ 6 0
31 NGC 6611 227 Y*O 18 18 38.4019036872 -13 47 09.063135564 13.18 13.487 12.753   11.792 B1.5Ve 37 0
32 2MASS J18183854-1351101 Y*O 18 18 38.5476760632 -13 51 10.308202344 20.698 19.292 17.507   15.514 ~ 8 0
33 2MASS J18183868-1344575 Y*O 18 18 38.6929999584 -13 44 57.535297620 21.521 20.917 18.819   16.054 ~ 5 0
34 2MASS J18183871-1348539 Y*O 18 18 38.7199008384 -13 48 54.009662652 21.738 19.955 18.033   15.830 ~ 8 0
35 EM* MWC 916 Ae* 18 18 38.8191340848 -13 46 44.278111416 12.209 11.990 11.127   9.598 Be 34 0
36 2MASS J18183900-1342307 EB* 18 18 39.0064722241 -13 42 30.787607467   19.481 18.096   16.44 ~ 2 0
37 2MASS J18183917-1346049 Y*O 18 18 39.1808209536 -13 46 04.931869656 21.441 19.526 17.511   15.145 ~ 8 0
38 Cl* NGC 6611 PPM 32 Y*O 18 18 39.3727282656 -13 47 11.784918192   17.482 15.863   13.975 ~ 11 0
39 Cl* NGC 6611 GMD 282 Y*? 18 18 39.4731090984 -14 00 34.052190588 21.019 20.089 18.220   16.019 ~ 5 0
40 2MASS J18183970-1348411 Y*O 18 18 39.7225746960 -13 48 41.216720076 19.383 18.094 16.432   14.530 ~ 10 0
41 V* FM Ser Or* 18 18 39.833 -13 47 44.19 19.766 19.971 17.822 16.00 15.039 ~ 8 0
42 2MASS J18184008-1346526 Y*O 18 18 40.0878977232 -13 46 52.654715904   19.366 17.471   15.147 ~ 5 0
43 Cl* NGC 6611 GMD 404 Y*O 18 18 40.4761069272 -13 47 18.296090376 21.647 20.702 18.689   16.239 ~ 8 0
44 NGC 6611 258 EB* 18 18 41.1611651208 -13 48 21.099652920 16.744 16.381 15.265   14.1 ~ 8 0
45 2MASS J18184141-1347082 Y*O 18 18 41.4285474672 -13 47 08.318287752 21.322 19.584 17.623   15.381 ~ 8 0
46 NGC 6611 262 EB* 18 18 41.5439740971 -13 48 40.403404277 14.55 14.534 13.792   12.814 Ae 18 0
47 NGC 6611 266 Y*O 18 18 41.5798507368 -13 46 30.924135624 16.711 15.701 14.267   12.510 G 23 0
48 Cl* NGC 6611 GMD 1010 Y*O 18 18 41.8111480320 -13 47 29.213298528 22.092 20.677 18.672   16.305 ~ 10 0
49 Cl* NGC 6611 GMD 1081 Or* 18 18 41.8602654642 -13 47 23.066453026 22.045 20.070 18.105   15.770 ~ 9 0
50 Cl* NGC 6611 GMD 1114 Or* 18 18 41.9263306320 -13 48 59.889290688 22.047 20.362 18.410   16.055 ~ 11 0
51 2MASS J18184201-1348036 Y*O 18 18 42.0161487432 -13 48 03.657478356   21.922 19.882   17.489 ~ 4 0
52 NGC 6611 270 dS* 18 18 42.0351253320 -13 47 14.023084560 17.407 16.432 15.431   14.233 ~ 8 0
53 2MASS J18184204-1353171 Y*O 18 18 42.0444234384 -13 53 17.227306068 21.658 20.352 18.446   16.144 ~ 6 0
54 Cl* NGC 6611 GMD 959 Y*O 18 18 42.7059145452 -13 47 30.227047316   20.153 18.134   15.754 ~ 7 0
55 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
56 M 16 OpC 18 18 45.1 -13 47 31           ~ 1084 1
57 BD-13 4929 Y*O 18 18 45.8504419992 -13 46 30.898082136 10.05 10.509 10.23 10.02 8.830 O7V+B0.5V+B0.5V: 70 0
58 2MASS J18184591-1355220 Y*O 18 18 45.9237193272 -13 55 22.031591196 19.419 18.104 16.520   14.740 ~ 9 0
59 Cl* NGC 6611 GMD 289 Y*O 18 18 45.9624215256 -13 47 52.670108040 20.622 18.752 16.759   14.403 ~ 9 0
60 2MASS J18184601-1350090 Y*O 18 18 46.0197129432 -13 50 09.059701452 20.775 19.362 17.629   15.628 ~ 7 0
61 NGC 6611 310 Y*O 18 18 46.1271916305 -13 54 37.165958507 15.153 14.37 13.59   12.591 ~ 14 0
62 NGC 6611 322 Y*O 18 18 46.6060913616 -13 46 59.886730956 14.39 14.3 13.68   12.618 B8V:e 20 0
63 Cl* NGC 6611 GMD 267 Y*O 18 18 47.7927396312 -13 48 15.338057652 20.088 18.253 16.195   13.841 ~ 5 0
64 Cl* NGC 6611 GMD 908 Y*O 18 18 47.85960 -13 50 01.1832 21.999 20.831 18.849   16.440 ~ 4 0
65 2MASS J18184793-1355138 Y*O 18 18 47.9074991160 -13 55 13.934059500 21.856 20.928 18.915   16.652 ~ 5 0
66 Cl* NGC 6611 GMD 274 Or* 18 18 47.9773012368 -13 48 36.251219124 22.015 20.392 18.241   15.645 ~ 10 0
67 Cl* NGC 6611 GMD 293 Or* 18 18 48.2273492232 -13 49 08.275570752 20.433 18.736 16.894   14.593 ~ 8 0
68 NGC 6611 347 dS* 18 18 49.3603049016 -13 39 08.381014812   15.169 14.266   13.213 A7III 5 0
69 NGC 6611 343 EB* 18 18 49.3751453496 -13 46 50.032684956 12.4 12.646 11.792   10.461 B1V 27 0
70 Cl* NGC 6611 GMD 843 Y*O 18 18 49.8427924296 -13 48 17.416121688 20.971 19.308 17.590   15.220 ~ 7 0
71 ISOGAL-P J181849.9-134659 Or* 18 18 49.8952357968 -13 46 59.640517272 20.959 19.244 17.400   14.820 ~ 13 1
72 Cl* NGC 6611 GMD 238 Or* 18 18 52.1308704024 -13 48 10.181678256 20.930 19.458 17.825   15.566 ~ 13 0
73 Cl* NGC 6611 GMD 205 Or* 18 18 52.4058550176 -13 46 58.499870268 20.949 19.473 17.747   15.284 ~ 8 0
74 NGC 6611 374 dS* 18 18 53.2682646360 -13 46 07.183104924 15.529 14.406 13.347   11.968 F 25 0
75 2MASS J18185524-1347595 Y*O 18 18 55.2413319144 -13 47 59.546331132 21.290 19.304 17.706   15.662 ~ 5 0
76 Cl* NGC 6611 GMD 225 Or* 18 18 55.3117040880 -13 46 51.730365684 21.135 20.111 18.244   15.557 ~ 8 0
77 2MASS J18185812-1354319 Y*O 18 18 58.124 -13 54 31.95 21.363 21.153 19.332   16.587 ~ 4 0
78 V* FN Ser Or* 18 18 58.5302886600 -13 48 28.433889360 20.265 19.746 17.963   15.462 ~ 13 0
79 2MASS J18185860-1349567 Y*O 18 18 58.6091907144 -13 49 56.840902752 22.536 20.066 18.340   15.980 ~ 5 0
80 V* QR Ser SB* 18 18 58.6907022768 -13 59 28.456622916 7.92 8.55 8.28 9.07   O9.5III+B3-5V/III 91 0
81 2MASS J18185915-1339552 Y*O 18 18 59.1600550152 -13 39 55.316302776   15.283 14.204   12.985 ~ 5 0
82 2MASS J18185925-1346418 Y*O 18 18 59.2605008040 -13 46 41.884113216 21.897 20.548 18.794   16.309 ~ 6 0
83 NGC 6611 435 dS* 18 18 59.5750177980 -13 45 39.462598932 17.037 16.437 15.474   14.278 ~ 6 0
84 2MASS J18185982-1346105 Y*O 18 18 59.8316341800 -13 46 10.574143500 20.995 19.234 17.474   15.161 ~ 7 0
85 Cl* NGC 6611 GMD 476 Y*O 18 19 00.2063893224 -13 45 40.029596928 21.499 19.869 17.784   15.317 ~ 6 0
86 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
87 NGC 6611 451 dS* 18 19 00.9315081984 -13 38 49.065569772   15.085 14.292   13.397 ~ 6 0
88 2MASS J18190119-1347195 Y*O 18 19 01.1955643128 -13 47 19.518891576 21.753 20.091 18.233   15.694 ~ 4 0
89 2MASS J18190315-1345111 Y*O 18 19 03.1576108272 -13 45 11.234839320 20.104 18.497 16.540   14.221 ~ 5 0
90 NGC 6611 472 Y*O 18 19 04.7114310432 -13 44 44.557244268 13.07 13.421 12.846   12.109 B3Ve 22 0
91 NGC 6611 465 V* 18 19 04.8221842128 -13 52 32.360758500 15.532 15.283 14.522   13.694 ~ 4 0
92 Cl* NGC 6611 GMD 88 Y*? 18 19 05.678 -13 44 44.66 20.416 20.026 18.254   15.889 ~ 4 0
93 Cl* NGC 6611 GMD 765 Y*O 18 19 05.8980727872 -13 47 51.784582632 21.621 20.203 18.359   15.814 ~ 8 0
94 2MASS J18190618-1344285 Y*O 18 19 06.1887188448 -13 44 28.587767028 21.261 20.189 18.024   15.449 ~ 8 0
95 2MASS J18190660-1345365 Y*O 18 19 06.6101225088 -13 45 36.607493160 20.252 18.862 16.853   14.369 ~ 8 0
96 2MASS J18190684-1352404 Y*O 18 19 06.8478762720 -13 52 40.454520816   20.212 18.441   15.968 ~ 7 0
97 2MASS J18190726-1343479 Y*O 18 19 07.2635045064 -13 43 47.972775360 21.719 20.165 18.214   15.886 ~ 6 0
98 NGC 6611 491 dS* 18 19 07.4300880120 -13 40 37.923611124   16.928 15.275   12.836 ~ 8 0
99 2MASS J18190844-1347527 Y*O 18 19 08.4486491400 -13 47 52.810994184 22.163 20.147 18.284   15.658 ~ 5 0
100 V* EU Ser Ae* 18 19 09.3931184496 -13 50 41.201118528 14.934 14.697 14.158   12.923 Be 35 0
101 2MASS J18191155-1342383 Y*O 18 19 11.5591405728 -13 42 38.422890036   20.385 18.344   15.885 ~ 8 0
102 V* EV Ser Or* 18 19 13.8185994264 -13 58 44.857561620 18.902 15.240 14.656   13.677 ~ 12 0
103 Cl* NGC 6611 GMD 799 Y*O 18 19 14.8154646144 -13 46 14.236596012 21.256 19.346 17.505   15.022 ~ 4 0
104 Gaia DR3 4152620504873901056 V* 18 19 16.1114014038 -13 34 57.865113856           ~ 1 0
105 2MASS J18192002-1349127 Y*O 18 19 20.0302662240 -13 49 12.819545796 19.290 18.114 16.656   14.851 ~ 9 0
106 BD-13 4937 Y*O 18 19 20.0319493560 -13 54 21.677384808 10.53 11.11 10.78     B1.5V 48 1
107 NGC 6611 546 Y*O 18 19 20.8872715464 -13 42 04.135631436 19.386 17.222 16.321   14.982 ~ 15 0
108 2MASS J18192423-1345475 V* 18 19 24.2370456290 -13 45 47.643039622   18.52 16.922     ~ 1 0
109 HD 186183 * 19 42 40.5062818680 +06 05 10.149955548   10.25 10.14     A0 4 0

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