2011ApJS..194...27H

Query : 2011ApJS..194...27H

2011ApJS..194...27H - Astrophys. J., Suppl. Ser., 194, 27 (2011/June-0)

An R- and I-band photometric variability survey of the Cygnus OB2 association.

HENDERSON C.B., STANEK K.Z., PEJCHA O. and PRIETO J.L.

Abstract (from CDS):

We present a catalog of photometrically variable stars discovered within two 21'.3x21'.3 fields centered on the Cygnus OB2 association (Cyg OB2). There have hitherto been no deep optical variability studies of Cyg OB2, despite it being replete with early-type massive stars, likely due to the high and variable extinction (up to AV~ 20) that permeates much of the region. Here, we provide results of the first variability study with this combination of spatial coverage (∼0.5 deg) and photometric depth (R ∼ 21 mag). We find 121 stars to be variable in both R and I bands, 115 of them newly discovered. Of the 121 variables, we identify 27 eclipsing binaries and eclipsing-binary candidates, 52 pulsating variables, and 20 potential Herbig Ae/Be stars. Confirming both the status and the cluster membership of the Herbig Ae/Be stars would address the uncertainty regarding the age and star formation history of Cyg OB2. We match our catalog to known variables and binaries in the region, Two Micron All Sky Survey near-IR data, and Chandra X-ray observations to find counterparts to new variables in other wavelengths.

Abstract Copyright: ∼

Journal keyword(s): binaries: eclipsing - binaries: general - open clusters and associations: individual: Cygnus OB2 - stars: massive - stars: variables: T Tauri, Herbig Ae/Be

VizieR on-line data: <Available at CDS (J/ApJS/194/27): table2.dat>

Nomenclature: Table 2: [HSP2011] NNN (Nos 1-121).

Simbad objects: 197

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Number of rows : 197
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 V* UX Ori Ae* 05 04 29.9878898040 -03 47 14.286732072 10.25 10.93 8.70 9.62 9.43 A4IVe 379 1
2 V* RR Tau Ae* 05 39 30.5115918672 +26 22 26.967444996 11.64 12.09 11.28 10.58 10.17 A0:IVe 237 0
3 * alf Cen ** 14 39 36.50 -60 50 02.3   0.4 -0.1     G2V+K1V 1031 0
4 * gam Cyg V* 20 22 13.7018357 +40 15 24.044963 3.44 2.90 2.23 1.74 1.40 F8Ib 607 0
5 [CPR2002] A45 SB* 20 29 46.6721589624 +41 05 08.338345224           B0.5V+B1V:-B2V: 21 0
6 V* V1827 Cyg s*b 20 30 27.3018237840 +41 13 25.130220744     13.053     O6Iaf+O9Ia 42 0
7 RLP 1520 SB* 20 30 50.7333660192 +41 35 06.639049932 15.23 15.04 13.74     B1.5V+B+? 20 0
8 RLP 1508 V* 20 31 00.1724851464 +41 34 30.093917700   15.02 14.15 13.81 13.27 ~ 3 0
9 [HSP2011] 080 Pu* 20 31 04.7779842048 +41 20 26.082977568       18.69 17.08 ~ 1 0
10 Schulte 1 SB* 20 31 10.544472 +41 31 53.52024 12.82 12.69 11.09 10.57   O8V+B 70 0
11 2MASS J20311688+4130012 Y*? 20 31 16.8868367280 +41 30 01.077974064       19.33 17.95 ~ 2 0
12 [HSP2011] 101 Pu* 20 31 18.7315072848 +41 34 55.218973764       19.61 18.02 ~ 1 0
13 Schulte 2 V* 20 31 22.0268518920 +41 31 28.365740076 12.01 11.82 10.64     B1Ib: 68 0
14 2MASS J20312263+4128337 EB* 20 31 22.6246350408 +41 28 33.572602632       18.38 16.86 ~ 1 0
15 ZTF J203123.56+412948.9 RS* 20 31 23.5645058256 +41 29 48.897657636       15.83 14.91 ~ 5 0
16 [HSP2011] 019 Pu* 20 31 25.7268671568 +41 29 15.819749952       16.08 15.37 ~ 1 0
17 GSC 03161-01115 PM* 20 31 26.7871257744 +41 36 38.673588168   14.85 13.43 12.96   ~ 3 0
18 2MASS J20313027+4128495 EB* 20 31 30.2430306624 +41 28 49.609160364       19.97 18.53 ~ 2 0
19 [HSP2011] 017 Pu* 20 31 37.3202379552 +41 24 38.213245296       15.94 14.88 ~ 2 0
20 BD+40 4212 SB* 20 31 37.5053189952 +41 13 21.001757520 12.46 11.5 10.214     O6IV:+O9III 83 1
21 RLP 585 Pu* 20 31 42.0011066208 +41 21 58.269511836   15.53 14.75 14.46 13.96 ~ 3 0
22 RLP 593 * 20 31 45.3998073432 +41 18 26.728678620 14.91 14.25 12.26     O8V 32 0
23 2MASS J20314713+4126361 Pu* 20 31 47.131 +41 26 36.18       19.93 18.34 ~ 1 0
24 [HSP2011] 066 EB? 20 31 48.6919228776 +41 21 54.925185888       18.07 16.46 ~ 1 0
25 Schulte 20 SB* 20 31 49.6575031512 +41 28 26.510600388 12.67 12.63 11.52     O9III+B 50 0
26 ZTF J203151.49+412354.3 EB* 20 31 51.4891439976 +41 23 54.323584044       19.16 17.74 ~ 4 0
27 2MASS J20315240+4126102 Y*? 20 31 52.4022422952 +41 26 10.160687472       20.68 19.09 ~ 2 0
28 ZTF J203153.13+413331.1 BY* 20 31 53.1327221112 +41 33 31.069295640       17.66 16.49 ~ 3 0
29 2MASS J20315345+4123486 Y*? 20 31 53.4568036822 +41 23 48.638592491       18.82 17.27 ~ 2 0
30 2MASS J20315356+4125341 Y*? 20 31 53.568 +41 25 34.16       19.20 17.92 ~ 2 0
31 [HSP2011] 115 Pu* 20 31 56.764 +41 21 52.65       20.24 18.46 ~ 1 0
32 RLP 210 SB* 20 31 56.9461566120 +41 31 47.764616124 13.99 13.76 12.55     B2III+G-B 25 0
33 2MASS J20315974+4127231 EB? 20 31 59.747 +41 27 23.16       19.39 17.80 ~ 1 0
34 NAME Cyg Complex reg 20 32 +45.0           ~ 667 0
35 [HSP2011] 068 Pu* 20 32 01.92 +41 31 36.7       18.13 16.77 ~ 1 0
36 2MASS J20320565+4127489 * 20 32 05.6483352216 +41 27 48.964755204   16.12 14.81     B6V 8 0
37 2MASS J20320748+4124354 EB? 20 32 07.488 +41 24 35.49       17.95 16.57 ~ 2 0
38 RLP 615 SB* 20 32 07.9695369168 +41 21 59.849287740   15.81 14.46     B2V+A-B 14 0
39 ZTF J203208.02+412714.2 EB* 20 32 08.0232251088 +41 27 14.208364080       17.79 16.55 ~ 4 0
40 [HSP2011] 015 V* 20 32 10.0083112368 +41 18 22.644622008       15.66 14.95 ~ 1 0
41 [HSP2011] 041 Ir* 20 32 10.8678363120 +41 22 05.583587484       17.19 15.77 ~ 2 0
42 2MASS J20321174+4126121 Y*? 20 32 11.7376993920 +41 26 12.231966192       17.46 16.05 ~ 2 0
43 ZTF J203215.61+412009.7 RS* 20 32 15.6193701864 +41 20 09.643104060       19.77 18.08 ~ 2 0
44 2MASS J20321779+4120008 Y*? 20 32 17.7957947300 +41 20 00.945675448       16.52 15.18 ~ 6 0
45 [HSP2011] 088 V* 20 32 19.0074193800 +41 22 24.636799452       18.96 17.46 ~ 1 0
46 RLP 619 SB* 20 32 19.6472111832 +41 20 38.899179780 14.79 14.53 13.25     B1.5V+B 18 0
47 [HSP2011] 048 EB? 20 32 19.9179551952 +41 21 11.696769360       17.38 15.95 ~ 2 0
48 RLP 230 Pu* 20 32 19.9319447880 +41 33 55.030476888   16.4 15.5 14.75 13.86 ~ 3 0
49 [HSP2011] 061 Pu* 20 32 20.3335187712 +41 23 23.765530272       17.92 16.53 ~ 1 0
50 2MASS J20322135+4118354 * 20 32 21.3466446144 +41 18 35.477965044 17.31 16.71 14.91     B1V 16 0
51 RLP 530 SB* 20 32 22.1197789656 +41 27 42.085617228   14.58 13.88     B1.5V+B 14 0
52 ZTF J203222.21+412245.5 EB* 20 32 22.2086380920 +41 22 45.414204600       20.20 18.78 ~ 2 0
53 BD+40 4220 s*b 20 32 22.4238071594 +41 18 18.942475904 11.32 10.61 9.185     O7Iafep 414 0
54 ZTF J203223.75+412913.0 RS* 20 32 23.7545547912 +41 29 13.008766056       17.09 15.83 ~ 6 0
55 2MASS J20322387+4120597 Y*? 20 32 23.8725872832 +41 20 59.797336308       17.21 15.86 ~ 2 0
56 [HSP2011] 089 Pu* 20 32 23.8885281672 +41 16 48.374414328       19.02 17.23 ~ 1 0
57 2MASS J20322503+4125385 Y*? 20 32 25.0309097880 +41 25 38.569750932       20.57 18.83 ~ 2 0
58 2MASS J20322506+4117219 Y*? 20 32 25.0488548856 +41 17 21.900591456       17.22 15.77 ~ 4 0
59 2MASS J20322522+4124276 LP* 20 32 25.2194022840 +41 24 27.661121244       17.99 15.19 ~ 2 0
60 2MASS J20322575+4128425 Pu* 20 32 25.7252557069 +41 28 42.351760913       17.75 16.38 ~ 3 0
61 2MASS J20322590+4135589 Y*? 20 32 25.9008073056 +41 35 58.923701736       16.74 15.39 ~ 5 0
62 2MASS J20322622+4129495 Pu* 20 32 26.229 +41 29 49.51       17.27 16.04 ~ 1 0
63 [HSP2011] 071 EB? 20 32 26.3250454152 +41 24 09.609853284       18.29 16.83 ~ 1 0
64 RLP 631 SB* 20 32 26.5055734776 +41 19 13.836357012 16.11 15.7 14.15     B2III+B1V 23 0
65 [HSP2011] 090 Pu* 20 32 26.7909705192 +41 30 38.856151656       19.14 17.53 ~ 1 0
66 Schulte 15 SB* 20 32 27.6544131144 +41 26 22.073616744 12.39 12.30 11.10     O8V+B 55 0
67 Schulte 21 * 20 32 27.7375852104 +41 28 52.248099612 12.39 12.01 11.30 11.05   B0Ib 50 0
68 2MASS J20322842+4120174 Y*? 20 32 28.4178844464 +41 20 17.472344784       18.18 16.76 ~ 2 0
69 [HSP2011] 053 Pu* 20 32 29.0443547472 +41 25 37.053269688       17.67 16.29 ~ 2 0
70 [HSP2011] 026 Pu* 20 32 29.8582089624 +41 32 10.173078780       16.66 15.24 ~ 1 0
71 ZTF J203230.16+413449.2 EB* 20 32 30.1656244464 +41 34 49.239975540       17.13 15.86 ~ 4 0
72 ZTF J203230.87+411810.6 BY* 20 32 30.8725344768 +41 18 10.722007476       16.54 15.63 ~ 3 0
73 [HSP2011] 086 Pu* 20 32 31.0362905016 +41 18 55.086586632       18.84 17.23 ~ 1 0
74 RLP 497 SB* 20 32 31.4083592352 +41 30 51.602419368   15.81 14.38     B2.5V 13 0
75 2MASS J20323177+4124313 Pu* 20 32 31.771 +41 24 31.37       19.61 18.01 ~ 1 0
76 [HSP2011] 073 V* 20 32 31.8332269128 +41 27 15.159760524       18.43 17.03 ~ 1 0
77 2MASS J20323292+4118231 Y*? 20 32 32.925 +41 18 23.14       18.90 17.31 ~ 2 0
78 ZTF J203233.58+412102.5 RS* 20 32 33.5954227848 +41 21 02.517717996       19.17 17.65 ~ 4 0
79 ZTF J203234.96+413503.4 RS* 20 32 34.9640884848 +41 35 03.350762880   16.7 15.7 15.08 14.07 ~ 4 0
80 2MASS J20323658+4132185 EB* 20 32 36.5766236184 +41 32 18.536472492       16.32 15.03 ~ 1 0
81 2MASS J20323680+4119447 Pu* 20 32 36.8042774256 +41 19 44.747436324       19.92 18.13 ~ 2 0
82 RLP 492 SB* 20 32 37.0177286328 +41 23 05.186805072 15.01 14.59 13.08     B2V+B-F 25 0
83 [MHG2003] 12 EB? 20 32 37.8541609464 +41 28 52.575974904       16.56 15.26 ~ 3 0
84 2MASS J20323787+4121194 V* 20 32 37.8593146152 +41 21 19.397918124       18.46 16.87 ~ 3 0
85 2MASS J20323835+4128567 * 20 32 38.3435626200 +41 28 56.719109964   15.68 14.43     B3V 16 0
86 Schulte 12 s*b 20 32 40.9572199728 +41 14 29.279036940 16.1 14.45 11.702     B3-4Ia+ 453 0
87 [HSP2011] 028 Ir* 20 32 41.1092774544 +41 24 12.596948280       16.70 15.78 ~ 2 0
88 RLP 644 SB* 20 32 42.8884391784 +41 20 16.477275012   15.26 13.87     B2V+B3V 21 0
89 [HSP2011] 056 Pu* 20 32 45.0497729064 +41 23 49.371827856       17.73 16.69 ~ 1 0
90 [MT91] 336 SB* 20 32 49.6802921976 +41 25 36.457180680   15.3 14.13     B2V+B-M 15 0
91 [CPR2002] A2 LP* 20 32 51.3683513232 +41 08 40.005639168       17.11 15.52 ~ 9 0
92 2MASS J20325377+4115134 EB? 20 32 53.7690613560 +41 15 13.384828872       18.77 17.06 ~ 7 0
93 2MASS J20325597+4122343 Pu* 20 32 55.9588855008 +41 22 34.342463496       19.69 18.07 ~ 2 0
94 2MASS J20325667+4123408 * 20 32 56.6636273064 +41 23 40.890896304 15.41 15.09 13.81     B1V 19 0
95 [HSP2011] 116 V* 20 32 57.4669275792 +41 04 55.234911108       20.27 18.54 ~ 1 0
96 RLP 994 SB* 20 32 58.9203050976 +41 04 30.012303288 18.01 17.14 14.958   12.580 B0V+B2:V 30 0
97 Schulte 41 SB* 20 32 59.6317342392 +41 15 14.679727632 16.54 15.59 13.49     O9.7III(n) 37 0
98 2MASS J20330176+4111107 CV* 20 33 01.7776959048 +41 11 10.798287972     16.73 18.10 16.95 ~ 8 0
99 [HSP2011] 091 Pu* 20 33 02.3142520896 +41 23 45.531894624       19.14 17.56 ~ 1 0
100 RLP 666 SB* 20 33 02.9131259304 +41 17 43.161301572 15.67 15.06 12.94 12.18   O8V+G-O 40 0
101 2MASS J20330423+4106514 Pu* 20 33 04.2357412680 +41 06 51.367693896       18.65 16.93 ~ 2 0
102 ZTF J203304.38+412439.8 BY* 20 33 04.3739886600 +41 24 39.725505468   16.55 15.42 15.06 14.51 ~ 6 0
103 2MASS J20330450+4124161 Y*? 20 33 04.5039116640 +41 24 16.052328000       19.41 17.94 ~ 2 0
104 2MASS J20330526+4121391 Y*? 20 33 05.2602428160 +41 21 39.141719640           ~ 6 0
105 RLP 107 SB* 20 33 05.2620969456 +41 43 36.748888104 14.9 14.43 12.94     B1V+B 28 0
106 2MASS J20330817+4106265 Pu* 20 33 08.1747883752 +41 06 26.494408188       17.69 16.10 ~ 5 0
107 2MASS J20330833+4115432 EB* 20 33 08.3224204248 +41 15 43.235883648       16.32 15.32 ~ 3 0
108 2MASS J20330859+4119154 Y*? 20 33 08.5889437800 +41 19 15.383098272       17.07 15.69 ~ 4 0
109 [HSP2011] 113 V* 20 33 08.6763334824 +41 21 10.276772544       20.15 18.45 ~ 1 0
110 Schulte 57 RS* 20 33 08.7250623072 +41 18 51.564761928       16.18 15.05 ~ 7 0
111 Schulte 50 SB* 20 33 09.60288 +41 13 00.5520 15.52 14.82 12.86 12.32   O9V+B9V-A0V 38 1
112 2MASS J20330992+4117563 Y*? 20 33 09.9233113080 +41 17 56.350142016       19.43 17.81 ~ 3 0
113 2MASS J20331046+4120574 * 20 33 10.4640116712 +41 20 57.371779536   15.83 14.06     B1V 21 0
114 RLP 678 EB* 20 33 10.5041613984 +41 22 22.405661292 14.97 14.54 12.958     B0V+(B3V+B6V) 44 0
115 Schulte 9 s*b 20 33 10.7362926720 +41 15 08.222370372 13.38 12.77 10.96     O5I+O4III 243 0
116 2MASS J20331108+4114457 * 20 33 11.1003825792 +41 14 45.670599456   17.23 16.08     ~ 6 0
117 2MASS J20331145+4112568 Pu* 20 33 11.4620854008 +41 12 56.864358756       19.73 18.00 ~ 3 0
118 2MASS J20331151+4107197 V* 20 33 11.5133540232 +41 07 19.588419048       19.96 18.44 ~ 2 0
119 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
120 2MASS J20331273+4111330 Y*? 20 33 12.7319598144 +41 11 32.926850628       18.79 17.10 ~ 7 0
121 2MASS J20331283+4114409 * 20 33 12.837 +41 14 40.91       20.64 18.90 ~ 2 0
122 RLP 853 SB* 20 33 13.2612575376 +41 13 28.656230412 16.63 15.76 13.61     O6.5V((f)) 39 0
123 GSC 03161-01155 * 20 33 13.9057312464 +41 22 36.881365836   14.18 13.53     ~ 5 0
124 Schulte 7 * 20 33 14.1095938872 +41 20 21.904113804 12.24 12.00 10.55     O3If* 153 0
125 2MASS J20331434+4112218 * 20 33 14.349 +41 12 21.89       19.99 18.19 ~ 2 0
126 2MASS J20331443+4119238 Y*? 20 33 14.4278632200 +41 19 23.800675476   17.34 15.67     ~ 6 0
127 [AFM2007] 581 V* 20 33 15.5791021656 +41 21 33.498288936       16.98 15.68 ~ 5 0
128 [KMH2014] J203316.01+411727.06 Pu* 20 33 15.9950565912 +41 17 27.245378688       17.72 16.26 ~ 3 0
129 [HSP2011] 046 Pu* 20 33 17.9917305360 +41 10 20.678516976       17.29 15.91 ~ 2 0
130 RLP 680 SB* 20 33 18.0338622552 +41 21 36.661612428 13.9 12.72 11.82     O8V+B-O 39 0
131 2MASS J20331826+4114114 Y*? 20 33 18.2681429856 +41 14 11.440135500       17.40 15.91 ~ 7 0
132 Schulte 63 bC* 20 33 18.2826038544 +41 17 39.441982056   17       ~ 14 0
133 Schulte 64 Be* 20 33 18.5309527200 +41 15 35.149489128 18.17 17.24 14.88     B1Ve-B3Ve 30 0
134 ZTF J203318.88+411437.1 LP* 20 33 18.8833962216 +41 14 37.098948264       19.66 17.84 ~ 7 0
135 ALS 15184 * 20 33 19.1423803776 +41 17 44.986739532 17.04 16.53 14.85     B1V 16 0
136 2MASS J20331927+4124448 * 20 33 19.2666413880 +41 24 44.823537180 17.05 16.6 14.99     B5IV 15 0
137 2MASS J20332016+4119432 Pu* 20 33 20.1616195344 +41 19 43.331533608       18.07 16.53 ~ 2 0
138 ZTF J203320.44+412033.3 RS* 20 33 20.4422346768 +41 20 33.186257340     15.56     ~ 10 0
139 V* V2189 Cyg EB* 20 33 20.8955598254 +41 18 01.350819236   18.06       ~ 10 0
140 [AFM2007] 703 * 20 33 21.8502064248 +41 09 44.561557620       20.35 18.52 ~ 2 0
141 [HSP2011] 032 Pu* 20 33 21.9600508776 +41 11 40.883373636       16.82 15.40 ~ 2 0
142 IRAS 20317+4106 AB? 20 33 22.2007242864 +41 15 12.241133748     12.83     M0.0III 13 0
143 2MASS J20332224+4117446 Pu* 20 33 22.2427166664 +41 17 44.629370808       17.02 15.52 ~ 5 0
144 2MASS J20332245+4122169 * 20 33 22.4490987024 +41 22 16.932211788 16.1 15.68 14.26     B2V 21 0
145 [HSP2011] 014 Pu* 20 33 23.0651012256 +41 10 13.794052332       15.65 14.42 ~ 1 0
146 2MASS J20332334+4120171 * 20 33 23.3393716008 +41 20 17.192174676 15.67 15.24 13.74     B1V 22 0
147 2MASS J20332336+4119126 Pu* 20 33 23.3748610008 +41 19 12.717814656       18.63 17.22 ~ 3 0
148 V* V2190 Cyg Em* 20 33 24.7399778520 +41 22 04.473811524     14.06     B2Ve: 20 0
149 2MASS J20332633+4112388 Pu* 20 33 26.3342767368 +41 12 38.815024788       18.69 17.13 ~ 3 0
150 2MASS J20332754+4120158 Pu* 20 33 27.5384071728 +41 20 15.875356884       18.02 16.65 ~ 2 0
151 [HSP2011] 079 V* 20 33 28.1068777704 +41 21 40.226537016       18.67 17.29 ~ 1 0
152 2MASS J20332964+4118458 LP* 20 33 29.6390022840 +41 18 45.885582720       17.87 16.36 ~ 6 0
153 Schulte 74 SB* 20 33 30.3173970432 +41 35 57.893152056 15.04 14.41 12.51     O8V+B2-O 32 0
154 RLP 721 EB* 20 33 30.515 +41 20 17.13   16.06 14.41 13.81   B4Ve 13 0
155 Schulte 18 * 20 33 30.7901427336 +41 15 22.693080852 13.38 12.54 10.860     B1I 51 0
156 2MASS J20333144+4120576 Y*? 20 33 31.4438715720 +41 20 57.647559732       15.48 14.32 ~ 6 0
157 RLP 724 SB* 20 33 31.6396483032 +41 21 45.972551592 15.34 15.03 13.73     B2V+B-O 22 0
158 [AFM2007] 828 Pu* 20 33 31.7738798856 +41 20 47.423340456       16.69 15.40 ~ 7 0
159 GSC 03161-01254 * 20 33 33.939 +41 19 38.25 15.95 15.49 13.87     B3I 22 0
160 [HSP2011] 044 EB? 20 33 36.9418793016 +41 23 21.670039248       17.22 15.89 ~ 2 0
161 Schulte 19 s*b 20 33 39.1040288712 +41 19 25.992295824 12.91 12.77 10.944 10.38   B0Iab+B-O 73 0
162 IRAS 20318+4059 LP* 20 33 39.6160050696 +41 10 19.143610752       14.15 11.50 ~ 9 0
163 EM* AS 428 SB* 20 33 39.7935831360 +41 22 52.188298860 13.17 12.21 11.38     B1V+B1: 38 0
164 ZTF J203339.85+412145.1 dS* 20 33 39.8582708448 +41 21 45.096849648       16.06 14.90 ~ 4 0
165 GSC 03157-01379 Pu* 20 33 40.0786965888 +41 08 29.687283888   15.41 14.51 13.99 13.37 ~ 3 0
166 [AFM2007] 913 EB? 20 33 40.8047794680 +41 21 14.570514288       17.87 16.42 ~ 3 0
167 2MASS J20334092+4109362 V* 20 33 40.9305940800 +41 09 36.104874156       21.56 19.52 ~ 3 0
168 [AFM2007] 923 Pu* 20 33 41.8586164704 +41 10 20.347188924       18.49 16.84 ~ 2 0
169 2MASS J20334212+4122227 EB* 20 33 42.1193086560 +41 22 22.704183444   16.15 14.93 14.25 13.49 ~ 6 0
170 GSC 03157-01100 * 20 33 42.3404625144 +41 11 45.547805292 16.22 15.71 13.89     O9.7:V: 23 0
171 2MASS J20334713+4113165 V* 20 33 47.1367115640 +41 13 16.528813824       16.74 15.79 ~ 3 0
172 2MASS J20334758+4109064 * 20 33 47.5864735272 +41 09 06.418488996   16.14 14.21     B2V 16 0
173 Schulte 26 * 20 33 47.8316875224 +41 20 41.377739100 13.77 13.33 11.78     B1III 34 0
174 [HSP2011] 034 Pu* 20 33 48.8044997496 +41 23 08.206884204       16.90 15.72 ~ 1 0
175 ZTF J203348.98+411408.9 EB* 20 33 48.9913150176 +41 14 08.972352204       17.29 15.53 ~ 4 0
176 2MASS J20335089+4119034 LP? 20 33 50.8915412544 +41 19 03.378582300       16.74 14.02 ~ 2 0
177 [MT91] 658 Pu* 20 33 52.2246598152 +41 23 21.347802924   17.57 16.30 15.55 14.62 ~ 4 0
178 2MASS J20335310+4111193 EB? 20 33 53.0981225496 +41 11 19.283749368       16.82 15.34 ~ 5 0
179 2MASS J20335520+4120011 Y*? 20 33 55.1995816608 +41 20 01.219150932       19.73 18.09 ~ 2 0
180 [PJ95] 417 Pu* 20 33 56.3172231744 +41 18 17.090174088   17.06 15.70 14.83 13.85 ~ 6 0
181 2MASS J20335704+4106548 EB* 20 33 57.0439777152 +41 06 54.804192840       18.67 16.99 ~ 2 0
182 [HSP2011] 069 Pu* 20 33 57.4117759104 +41 21 48.116392236       18.18 16.80 ~ 2 0
183 [AFM2007] 1000 V* 20 33 58.3398106872 +41 20 56.196617784       17.47 16.04 ~ 2 0
184 GSC 03157-00193 * 20 33 59.2509364128 +41 05 38.094030708 15.76 15.3 13.61     B0V 24 0
185 Schulte 27 SB* 20 33 59.5281120792 +41 17 35.477936340 14.44 13.97 12.203   10.250 O9.7V(n)+O9.7V(n) 58 0
186 [HSP2011] 112 EB? 20 34 02.5273715112 +41 11 15.602065980       20.03 18.24 ~ 1 0
187 ATO J308.5168+41.2452 Pu* 20 34 04.0449789096 +41 14 43.010462940   16.6 15.49 14.34 12.93 ~ 5 0
188 2MASS J20340572+4119317 V* 20 34 05.72 +41 19 31.8   16.42 15.25 15.56 14.81 ~ 5 0
189 RLP 814 SB* 20 34 06.0155486352 +41 08 09.132034596 16.37 15.64 13.415     B0-B1+B1-B2 35 0
190 BD+41 3807 SB* 20 34 08.5147948176 +41 36 59.408503092 11.74 11.52 10.03     O5.5Ifc 137 0
191 2MASS J20340861+4106597 EB* 20 34 08.6176450608 +41 06 59.728850424       18.82 17.21 ~ 1 0
192 [HSP2011] 098 V* 20 34 10.9747924200 +41 08 14.625226968       19.42 17.70 ~ 1 0
193 Schulte 29 SB* 20 34 13.5108732672 +41 35 02.859602280 13.59 13.41 11.91     O7V+B-O 47 0
194 Schulte 73 SB* 20 34 21.9323730840 +41 17 01.655524788   14.13 12.40     O8Vz+O8Vz 34 0
195 2MASS J20342462+4126250 * 20 34 24.6201342744 +41 26 25.138048272 16.74 16.32 14.65     B1V 19 0
196 RLP 335 SB* 20 34 29.5987121592 +41 31 45.516383076 14.72 13.30 11.64     O7V+O9V 47 0
197 V* V2550 Cyg SB* 20 34 58.7802708120 +41 36 17.359091316   13.591 11.470 10.671   B0Ib+B0III 31 0

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