2015AJ....150..118P

Query : 2015AJ....150..118P

2015AJ....150..118P - Astron. J., 150, 118 (2015/October-0)

YSOVAR: mid-infrared variability of young stellar objects and their disks in the cluster IRAS 20050+2720.

POPPENHAEGER K., CODY A.M., COVEY K.R., GUNTHER H.M., HILLENBRAND L.A., PLAVCHAN P., REBULL L.M., STAUFFER J.R., WOLK S.J., ESPAILLAT C., FORBRICH J., GUTERMUTH R.A., HORA J.L., MORALES-CALDERON M. and SONG I.

Abstract (from CDS):

We present a time-variability study of young stellar objects (YSOs) in the cluster IRAS 20050+2720, performed at 3.6 and 4.5 µm with the Spitzer Space Telescope; this study is part of the Young Stellar Object VARiability (YSOVAR) project. We have collected light curves for 181 cluster members over 60 days. We find a high variability fraction among embedded cluster members of ca. 70%, whereas young stars without a detectable disk display variability less often (in ca. 50% of the cases) and with lower amplitudes. We detect periodic variability for 33 sources with periods primarily in the range of 2-6 days. Practically all embedded periodic sources display additional variability on top of their periodicity. Furthermore, we analyze the slopes of the tracks that our sources span in the color-magnitude diagram (CMD). We find that sources with long variability time scales tend to display CMD slopes that are at least partially influenced by accretion processes, while sources with short variability timescales tend to display extinction-dominated slopes. We find a tentative trend of X-ray detected cluster members to vary on longer timescales than the X-ray undetected members.

Abstract Copyright: ∼

Journal keyword(s): accretion, accretion disks - infrared: stars - protoplanetary disks - stars: pre-main sequence - stars: variables: general

VizieR on-line data: <Available at CDS (J/AJ/150/118): table2.dat>

Nomenclature: Table 2: SSTYSV JHHMMSS.ss+DDMMSS.s N=187.

Simbad objects: 214

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Number of rows : 214
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME Per Arm PoG 03 30 +45.0           ~ 1513 0
2 IC 348 OpC 03 44 31.7 +32 09 32           ~ 1393 1
3 V* HL Tau Or* 04 31 38.5107609312 +18 13 57.859747968   15.89 14.49 14.39   K5 1424 0
4 IRAS 04287+1807 mul 04 31 38.8 +18 13 57           ~ 796 0
5 V* AA Tau Or* 04 34 55.4201902392 +24 28 53.033624580 13.14 13.34 12.20 12.03   K5Ve 724 0
6 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2332 0
7 NAME Orion Molecular Cloud MoC 05 56 -01.8           ~ 1098 1
8 NAME GGD 12-15 OpC 06 10 52.1 -06 12 47           ~ 151 1
9 NGC 2264 OpC 06 40 52.1 +09 52 37           ~ 1793 0
10 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1154 1
11 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3631 1
12 2MASS J20063929+2731259 Y*O 20 06 39.296 +27 31 25.99           ~ 2 0
13 2MASS J20064063+2731169 Y*O 20 06 40.638 +27 31 16.99           ~ 1 0
14 [GMM2009] IRAS 20050+2720 55 Y*O 20 06 44.50 +27 30 57.8           ~ 2 0
15 2MASS J20064458+2731507 Y*O 20 06 44.584 +27 31 50.78           ~ 2 0
16 2MASS J20064477+2731541 Y*O 20 06 44.773 +27 31 54.11           ~ 2 0
17 SSTYSV J200647.77+273223.3 Y*O 20 06 47.7838300128 +27 32 23.488275876           ~ 1 0
18 2MASS J20064820+2732220 Y*O 20 06 48.2071628232 +27 32 22.019650764           ~ 2 0
19 2MASS J20064992+2732319 Y*O 20 06 49.923 +27 32 31.91           ~ 2 0
20 2MASS J20065102+2733145 Y*O 20 06 51.0228631512 +27 33 14.411137500           ~ 2 0
21 2MASS J20065303+2732482 Y*O 20 06 53.0336414424 +27 32 48.177830472           ~ 3 0
22 2MASS J20065445+2729591 Y*O 20 06 54.455 +27 29 59.11           ~ 3 0
23 SSTYSV J200655.20+273123.9 Y*O 20 06 55.2076236 +27 31 23.939700           ~ 1 0
24 [GMM2009] IRAS 20050+2720 9 Y*O 20 06 55.51 +27 29 20.6           ~ 2 0
25 SSTYSV J200655.66+272918.0 Y*O 20 06 55.6656000 +27 29 18.001200           ~ 1 0
26 2MASS J20065585+2730556 Y*O 20 06 55.850 +27 30 55.66           ~ 2 0
27 [GMM2009] IRAS 20050+2720 10 Y*O 20 06 55.97 +27 30 18.6           ~ 2 0
28 [GMM2009] IRAS 20050+2720 11 Y*O 20 06 56.11 +27 33 17.6           ~ 2 0
29 2MASS J20065613+2730502 Y*O 20 06 56.135 +27 30 50.28           ~ 2 0
30 2MASS J20065659+2733082 Y*O 20 06 56.5934197200 +27 33 08.231110920       18.264 16.493 ~ 2 0
31 [GMM2009] IRAS 20050+2720 14 Y*O 20 06 56.89 +27 31 15.2           ~ 2 0
32 2MASS J20065691+2730537 Y*O 20 06 56.9165034192 +27 30 53.787405708           ~ 2 0
33 SSTYSV J200657.02+273057.0 Y*O 20 06 57.0253294 +27 30 57.066406           ~ 1 0
34 SSTYSV J200657.16+273339.2 Y*O 20 06 57.1653461 +27 33 39.249242           ~ 1 0
35 SSTYSV J200657.16+273343.1 Y*O 20 06 57.1692000 +27 33 43.136788           ~ 1 0
36 SSTYSV J200657.18+273113.6 Y*O 20 06 57.1871412 +27 31 13.659123           ~ 1 0
37 2MASS J20065735+2730279 Y*O 20 06 57.3600212544 +27 30 27.886560300           ~ 3 0
38 [GMM2009] IRAS 20050+2720 70 Y*O 20 06 57.95 +27 29 29.5           ~ 3 0
39 2MASS J20065803+2730465 Y*O 20 06 58.039 +27 30 46.53           ~ 2 0
40 [GMM2009] IRAS 20050+2720 17 Y*O 20 06 58.21 +27 30 24.3           ~ 2 0
41 [GMM2009] IRAS 20050+2720 18 Y*O 20 06 58.39 +27 30 02.2           ~ 2 0
42 SSTYSV J200658.51+273414.5 Y*O 20 06 58.5122640 +27 34 14.520828           ~ 1 0
43 [GMM2009] IRAS 20050+2720 73 Y*O 20 06 58.58 +27 35 13.0           ~ 2 0
44 2MASS J20065886+2730296 Y*O 20 06 58.869 +27 30 29.61           ~ 2 0
45 2MASS J20065888+2730555 Y*O 20 06 58.887 +27 30 55.52           ~ 2 0
46 [GMM2009] IRAS 20050+2720 74 Y*O 20 06 58.91 +27 29 56.3           ~ 2 0
47 2MASS J20065902+2730070 Y*O 20 06 59.026 +27 30 07.07           ~ 2 0
48 2MASS J20065916+2730385 Y*O 20 06 59.165 +27 30 38.51           ~ 2 0
49 2MASS J20065933+2730085 Y*O 20 06 59.330 +27 30 08.51           ~ 1 0
50 2MASS J20065967+2730059 Y*O 20 06 59.679 +27 30 05.99           ~ 2 0
51 2MASS J20065980+2731467 Y*O 20 06 59.808 +27 31 46.71           ~ 2 0
52 2MASS J20065989+2728273 Y*O 20 06 59.8959066576 +27 28 27.446108988           ~ 2 0
53 2MASS J20065998+2726328 Y*O 20 06 59.9822326008 +27 26 32.940506328 15.409 15.133 14.222 13.754 13.322 ~ 2 0
54 [GWS2012] cluster core W As* 20 07 00 +27 30.0           ~ 2 0
55 [GMM2009] IRAS 20050+2720 3 Y*O 20 07 00.00 +27 34 03.4           ~ 2 0
56 2MASS J20070015+2731372 Y*O 20 07 00.157 +27 31 37.24           ~ 2 0
57 [GMM2009] IRAS 20050+2720 21 Y*O 20 07 00.19 +27 30 11.9           ~ 3 0
58 2MASS J20070022+2729561 Y*O 20 07 00.227 +27 29 56.16           ~ 2 0
59 2MASS J20070034+2731412 Y*O 20 07 00.348 +27 31 41.27           ~ 3 0
60 2MASS J20070035+2729426 Y*O 20 07 00.360 +27 29 42.65           ~ 2 0
61 2MASS J20070058+2731202 Y*O 20 07 00.584 +27 31 20.28           ~ 3 0
62 2MASS J20070076+2729585 Y*O 20 07 00.7618340472 +27 29 58.520032584       18.666 16.970 ~ 3 0
63 SSTYSV J200700.83+272943.2 Y*O 20 07 00.8373737 +27 29 43.257487           ~ 1 0
64 2MASS J20070085+2733563 Y*O 20 07 00.8584442856 +27 33 56.253526092       18.651 16.912 ~ 3 0
65 2MASS J20070093+2724058 Y*O 20 07 00.935 +27 24 05.84           ~ 2 0
66 [GMM2009] IRAS 20050+2720 23 Y*O 20 07 00.97 +27 22 34.0           ~ 2 0
67 [GMM2009] IRAS 20050+2720 86 Y*O 20 07 00.99 +27 28 32.3           ~ 2 0
68 [GWS2012] 53 Y*O 20 07 01.01106 +27 29 55.9449           ~ 2 0
69 2MASS J20070104+2729355 Y*O 20 07 01.0466357400 +27 29 35.422585584           ~ 3 0
70 SSTYSV J200701.11+272954.1 Y*O 20 07 01.1169307 +27 29 54.192025           ~ 1 0
71 [GMM2009] IRAS 20050+2720 24 Y*O 20 07 01.29 +27 31 06.7           ~ 2 0
72 2MASS J20070139+2729576 Y*O 20 07 01.392 +27 29 57.69           ~ 1 0
73 2MASS J20070139+2728042 Y*O 20 07 01.398 +27 28 04.23           ~ 2 0
74 2MASS J20070151+2730058 Y*O 20 07 01.514 +27 30 05.85           ~ 2 0
75 2MASS J20070157+2732109 Y*O 20 07 01.574 +27 32 11.00           ~ 2 0
76 2MASS J20070165+2734091 Y*O 20 07 01.6587944760 +27 34 08.988987324           ~ 2 0
77 2MASS J20070168+2731266 Y*O 20 07 01.6896768696 +27 31 26.736363696           ~ 3 0
78 2MASS J20070171+2730018 Y*O 20 07 01.7198058864 +27 30 01.744233048           ~ 2 0
79 2MASS J20070176+2731334 Y*O 20 07 01.7671468704 +27 31 33.430292760           ~ 3 0
80 [GMM2009] IRAS 20050+2720 93 Y*O 20 07 01.91 +27 32 36.9           ~ 2 0
81 2MASS J20070192+2729557 Y*O 20 07 01.930 +27 29 55.76           ~ 1 0
82 [GMM2009] IRAS 20050+2720 25 Y*O 20 07 02.01 +27 30 58.5           ~ 2 0
83 [GMM2009] IRAS 20050+2720 94 Y*O 20 07 02.05 +27 21 16.6           ~ 2 0
84 IRAS 20049+2721 Y*O 20 07 02.1738472248 +27 30 26.815510800 16.087 15.721 14.161 13.192 12.219 ~ 8 0
85 2MASS J20070219+2730141 Y*O 20 07 02.1973482936 +27 30 14.093420940           ~ 3 0
86 2MASS J20070237+2727550 Y*O 20 07 02.378 +27 27 55.02           ~ 2 0
87 [GMM2009] IRAS 20050+2720 27 Y*O 20 07 02.53 +27 31 02.8           ~ 2 0
88 [GMM2009] IRAS 20050+2720 99 Y*O 20 07 02.64 +27 27 16.5           ~ 2 0
89 2MASS J20070278+2729456 Y*O 20 07 02.7895587696 +27 29 45.456444636           ~ 2 0
90 2MASS J20070287+2728591 Y*O 20 07 02.8802532696 +27 28 59.042272224       18.697 16.844 ~ 3 0
91 2MASS J20070291+2724125 Y*O 20 07 02.913 +27 24 12.56           ~ 2 0
92 [GMM2009] IRAS 20050+2720 103 Y*O 20 07 02.98 +27 28 28.9           ~ 2 0
93 2MASS J20070302+2723061 Y*O 20 07 03.028 +27 23 06.15           ~ 2 0
94 [GMM2009] IRAS 20050+2720 105 Y*O 20 07 03.22 +27 30 53.7           ~ 2 0
95 2MASS J20070322+2730043 Y*O 20 07 03.2206377192 +27 30 04.187762316           ~ 3 0
96 2MASS J20070327+2728556 Y*O 20 07 03.271 +27 28 55.61           ~ 3 0
97 2MASS J20070334+2729545 Y*O 20 07 03.3377885280 +27 29 54.546727812           ~ 3 0
98 2MASS J20070336+2731541 Y*O 20 07 03.360 +27 31 54.16           ~ 2 0
99 2MASS J20070345+2733423 Y*O 20 07 03.4609570008 +27 33 42.226933896           ~ 2 0
100 2MASS J20070377+2722545 Y*O 20 07 03.778 +27 22 54.57           ~ 2 0
101 [GMM2009] IRAS 20050+2720 29 Y*O 20 07 03.78 +27 28 37.9           ~ 3 0
102 2MASS J20070380+2727104 Y*O 20 07 03.8049681048 +27 27 10.475458596           ~ 2 0
103 2MASS J20070382+2730439 Y*O 20 07 03.8364046944 +27 30 43.979885172           ~ 3 0
104 2MASS J20070399+2734477 Y*O 20 07 03.999 +27 34 47.70           ~ 2 0
105 [GMM2009] IRAS 20050+2720 31 Y*O 20 07 04.08 +27 28 04.5           ~ 2 0
106 [GMM2009] IRAS 20050+2720 32 Y*O 20 07 04.10 +27 29 12.8           ~ 2 0
107 [GMM2009] IRAS 20050+2720 33 Y*O 20 07 04.16 +27 27 19.6           ~ 2 0
108 SSTYSV J200704.17+273403.6 Y*O 20 07 04.1782054 +27 34 03.619200           ~ 1 0
109 2MASS J20070421+2723060 Y*O 20 07 04.211 +27 23 06.08           ~ 2 0
110 2MASS J20070431+2729425 Y*O 20 07 04.3211258592 +27 29 42.423984528           ~ 2 0
111 [GMM2009] IRAS 20050+2720 112 Y*O 20 07 04.33 +27 30 32.5           ~ 2 0
112 [GMM2009] IRAS 20050+2720 34 Y*O 20 07 04.43 +27 27 39.4           ~ 2 0
113 2MASS J20070446+2729241 Y*O 20 07 04.4594432400 +27 29 24.044738964           ~ 2 0
114 2MASS J20070450+2735519 Y*O 20 07 04.4837858362 +27 35 52.173778152           ~ 3 0
115 2MASS J20070453+2728584 Y*O 20 07 04.532 +27 28 58.48           ~ 3 0
116 2MASS J20070453+2732005 Y*O 20 07 04.537 +27 32 00.60           ~ 3 0
117 [GMM2009] IRAS 20050+2720 36 Y*O 20 07 04.62 +27 28 25.3           ~ 2 0
118 2MASS J20070464+2729342 Y*O 20 07 04.6373793888 +27 29 34.230483132           ~ 2 0
119 2MASS J20070467+2729308 Y*O 20 07 04.6751412024 +27 29 30.707895588           ~ 4 0
120 [GMM2009] IRAS 20050+2720 37 Y*O 20 07 04.89 +27 27 48.6           ~ 2 0
121 SSTYSV J200704.92+272920.5 Y*O 20 07 04.9204001 +27 29 20.533924           ~ 1 0
122 [GMM2009] IRAS 20050+2720 119 Y*O 20 07 04.99 +27 29 49.8           ~ 2 0
123 2MASS J20070499+2728558 Y*O 20 07 04.993 +27 28 55.84           ~ 3 0
124 2MASS J20070506+2734566 Y*O 20 07 05.0654179200 +27 34 56.570064204           ~ 2 0
125 2MASS J20070510+2729197 Y*O 20 07 05.1209729112 +27 29 19.499681184           ~ 2 0
126 2MASS J20070522+2731207 Y*O 20 07 05.225 +27 31 20.71           ~ 3 0
127 [GMM2009] IRAS 20050+2720 38 Y*O 20 07 05.36 +27 30 04.0           ~ 3 0
128 [GMM2009] IRAS 20050+2720 122 Y*O 20 07 05.37 +27 27 52.1           ~ 2 0
129 2MASS J20070539+2729276 Y*O 20 07 05.3894233920 +27 29 27.614822892       18.391 16.746 ~ 2 0
130 2MASS J20070539+2729044 Y*O 20 07 05.392 +27 29 04.40           ~ 3 0
131 2MASS J20070548+2723187 Y*O 20 07 05.4800172144 +27 23 18.762135648       17.169 15.576 ~ 2 0
132 [GMM2009] IRAS 20050+2720 39 Y*O 20 07 05.49 +27 31 11.4           ~ 2 0
133 2MASS J20070554+2727283 Y*O 20 07 05.542 +27 27 28.34           ~ 2 0
134 [GMM2009] IRAS 20050+2720 5 Y*O 20 07 05.64 +27 28 27.2           ~ 2 0
135 2MASS J20070567+2729329 Y*O 20 07 05.6778087768 +27 29 32.877798432       18.360 16.674 ~ 3 0
136 SSTYSV J200705.72+272955.1 Y*O 20 07 05.7252713 +27 29 55.131477           ~ 1 0
137 2MASS J20070582+2732335 Y*O 20 07 05.826 +27 32 33.58           ~ 2 0
138 SSTYSV J200705.87+273005.0 Y*O 20 07 05.8797242 +27 30 05.061228           ~ 1 0
139 2MASS J20070594+2729264 Y*O 20 07 05.9429150712 +27 29 26.319511320           ~ 2 0
140 [GWS2012] 6 Y*O 20 07 05.96 +27 29 10.1           ~ 2 0
141 2MASS J20070599+2729009 Y*O 20 07 05.994 +27 29 00.92           ~ 2 0
142 [CTG97] 7 Y*O 20 07 06.045 +27 28 56.70           ~ 3 0
143 [CTG97] 1 Y*O 20 07 06.099 +27 28 44.66           ~ 4 0
144 SSTYSV J200706.18+272831.2 Y*O 20 07 06.1897939 +27 28 31.281691           ~ 1 0
145 SSTYSV J200706.33+272857.0 Y*O 20 07 06.3347647 +27 28 57.060300           ~ 1 0
146 2MASS J20070640+2729283 Y*O 20 07 06.401 +27 29 28.39           ~ 3 0
147 IRAS 20050+2720 Y*O 20 07 06.549 +27 28 49.10           ~ 106 0
148 [CTG97] 5 Y*O 20 07 06.574 +27 28 53.18           ~ 3 0
149 [GMM2009] IRAS 20050+2720 129 Y*O 20 07 06.60 +27 28 19.1           ~ 2 0
150 [GWS2012] 28 Y*O 20 07 06.6068690 +27 32 00.437113           ~ 2 0
151 2MASS J20070661+2729368 Y*O 20 07 06.6126037704 +27 29 36.767324976           ~ 3 0
152 [CTG97] 2 Y*O 20 07 06.641 +27 28 47.83           ~ 3 0
153 SSTYSV J200706.64+272712.7 Y*O 20 07 06.6483192 +27 27 12.727348           ~ 1 0
154 2MASS J20070680+2730122 Y*O 20 07 06.807 +27 30 12.28           ~ 2 0
155 2MASS J20070682+2727149 Y*O 20 07 06.822 +27 27 14.94           ~ 2 0
156 2MASS J20070689+2728119 Y*O 20 07 06.894 +27 28 11.97           ~ 2 0
157 2MASS J20070696+2732086 Y*O 20 07 06.962 +27 32 08.69           ~ 2 0
158 2MASS J20070697+2729449 Y*O 20 07 06.9765148080 +27 29 44.808493344           ~ 3 0
159 2MASS J20070699+2728330 Y*O 20 07 06.995 +27 28 33.03           ~ 2 0
160 2MASS J20070708+2731397 Y*O 20 07 07.0816343688 +27 31 39.682196148           ~ 2 0
161 [GMM2009] IRAS 20050+2720 42 Y*O 20 07 07.09 +27 29 09.0           ~ 2 0
162 2MASS J20070713+2728264 Y*O 20 07 07.134 +27 28 26.49           ~ 3 0
163 [GMM2009] IRAS 20050+2720 136 Y*O 20 07 07.25 +27 29 55.8           ~ 2 0
164 2MASS J20070728+2728596 Y*O 20 07 07.283 +27 28 59.62           ~ 2 0
165 2MASS J20070730+2735153 Y*O 20 07 07.3098859416 +27 35 15.523402236           ~ 1 0
166 2MASS J20070732+2729239 Y*O 20 07 07.323 +27 29 23.91           ~ 2 0
167 [GMM2009] IRAS 20050+2720 43 Y*O 20 07 07.42 +27 28 07.6           ~ 2 0
168 2MASS J20070767+2730559 Y*O 20 07 07.679 +27 30 55.92           ~ 2 0
169 SSTYSV J200707.67+272805.9 Y*O 20 07 07.6788118 +27 28 05.993382           ~ 1 0
170 2MASS J20070770+2723207 Y*O 20 07 07.701 +27 23 20.73           ~ 3 0
171 2MASS J20070773+2728524 Y*O 20 07 07.737 +27 28 52.46           ~ 2 0
172 [GMM2009] IRAS 20050+2720 44 Y*O 20 07 07.74 +27 28 19.5           ~ 2 0
173 2MASS J20070782+2727522 Y*O 20 07 07.8231258120 +27 27 52.455195432           ~ 3 0
174 2MASS J20070783+2727388 Y*O 20 07 07.837 +27 27 38.82           ~ 2 0
175 [GMM2009] IRAS 20050+2720 45 Y*O 20 07 07.86 +27 27 17.5           ~ 2 0
176 2MASS J20070790+2729019 Y*O 20 07 07.904 +27 29 01.93           ~ 3 0
177 2MASS J20070794+2732252 Y*O 20 07 07.941 +27 32 25.28           ~ 3 0
178 [GWS2012] 16 Y*O 20 07 08.20 +27 28 39.5           ~ 2 0
179 2MASS J20070825+2728255 Y*O 20 07 08.252 +27 28 25.53           ~ 3 0
180 2MASS J20070835+2729163 Y*O 20 07 08.3494328112 +27 29 16.270015308           ~ 2 0
181 2MASS J20070842+2730035 Y*O 20 07 08.4213547272 +27 30 03.534726240       18.097 16.401 ~ 2 0
182 2MASS J20070846+2728446 Y*O 20 07 08.466 +27 28 44.64           ~ 3 0
183 2MASS J20070873+2732319 Y*O 20 07 08.738 +27 32 31.91           ~ 2 0
184 [GMM2009] IRAS 20050+2720 48 Y*O 20 07 08.90 +27 24 25.5           ~ 2 0
185 [GMM2009] IRAS 20050+2720 50 Y*O 20 07 09.09 +27 32 27.1           ~ 2 0
186 2MASS J20070910+2723118 Y*O 20 07 09.101 +27 23 11.82           ~ 2 0
187 [GMM2009] IRAS 20050+2720 143 Y*O 20 07 09.16 +27 29 05.0           ~ 2 0
188 2MASS J20070933+2729331 Y*O 20 07 09.339 +27 29 33.19           ~ 2 0
189 [GMM2009] IRAS 20050+2720 145 Y*O 20 07 09.45 +27 28 33.7           ~ 2 0
190 [GWS2012] 19615 Y*O 20 07 09.68138 +27 21 45.7611           ~ 2 0
191 2MASS J20070991+2727558 Y*O 20 07 09.914 +27 27 55.87           ~ 2 0
192 2MASS J20071018+2727097 Y*O 20 07 10.188 +27 27 09.77           ~ 4 0
193 [GWS2012] 17 Y*O 20 07 10.32 +27 28 53.8           ~ 2 0
194 2MASS J20071044+2728476 Y*O 20 07 10.443 +27 28 47.61           ~ 2 0
195 2MASS J20071094+2727593 Y*O 20 07 10.943 +27 27 59.36           ~ 2 0
196 [GMM2009] IRAS 20050+2720 149 Y*O 20 07 11.11 +27 31 52.2           ~ 2 0
197 2MASS J20071131+2728169 Y*O 20 07 11.319 +27 28 16.93           ~ 2 0
198 2MASS J20071150+2728245 Y*O 20 07 11.502 +27 28 24.50           ~ 3 0
199 2MASS J20071281+2728587 Y*O 20 07 12.813 +27 28 58.79           ~ 2 0
200 2MASS J20071451+2724268 Y*O 20 07 14.5114219224 +27 24 26.893430964           ~ 2 0
201 HD 339537 Y*O 20 07 16.8289455504 +27 22 51.836660616 11.155 11.06 10.627 10.381 10.084 F8 5 0
202 [GWS2012] 21582 Y*O 20 07 16.93620 +27 29 59.6642           ~ 2 0
203 2MASS J20071694+2728212 Y*O 20 07 16.9465136736 +27 28 21.241955568 15.562 15.119 14.184 13.710 13.265 ~ 2 0
204 2MASS J20071898+2729420 Y*O 20 07 18.9808511568 +27 29 41.997290028           ~ 2 0
205 2MASS J20071969+2724389 Y*O 20 07 19.6898399640 +27 24 39.061875780 15.584 14.941 13.950 13.452 12.974 ~ 2 0
206 2MASS J20072329+2725326 Y*O 20 07 23.2928294280 +27 25 32.587521636       18.694 16.741 ~ 2 0
207 2MASS J20072571+2728223 Y*O 20 07 25.7068174536 +27 28 22.428633324           ~ 2 0
208 2MASS J20072931+2728179 Y*O 20 07 29.3122556016 +27 28 17.985616392       18.108 16.982 ~ 2 0
209 [GWS2012] cluster core E As* 20 07 40 +27 33.0           ~ 2 0
210 NAME Northern Coalsack DNe 20 21 +37.0           ~ 117 0
211 NAME Cyg X BL? 20 30 04.7973633 +40 51 36.002197           ~ 845 1
212 NAME Cyg Complex reg 20 32 +45.0           ~ 601 0
213 Ass Cyg OB 7 As* 21 08 +47.6           ~ 210 0
214 NAME Elephant Trunk Nebula MoC 21 36 +57.4           ~ 51 0

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