2010ApJ...725.2485K

Query : 2010ApJ...725.2485K

2010ApJ...725.2485K - Astrophys. J., 725, 2485-2506 (2010/December-3)

A Chandra observation of the obscured star-forming complex W40.

KUHN M.A., GETMAN K.V., FEIGELSON E.D., REIPURTH B., RODNEY S.A. and GARMIRE G.P.

Abstract (from CDS):

The young stellar cluster illuminating the W40 H II region, one of the nearest massive star-forming regions, has been observed with the ACIS detector on board the Chandra X-ray Observatory. Due to its high obscuration, this is a poorly studied stellar cluster with only a handful of bright stars visible in the optical band, including three OB stars identified as primary excitation sources. We detect 225 X-ray sources, of which 85% are confidently identified as young stellar members of the region. Two potential distances of the cluster, 260 pc and 600 pc, are used in the paper. Supposing the X-ray luminosity function to be universal, it supports a 600 pc distance as a lower limit for W40 and a total population of at least 600 stars down to 0.1 M☉ under the assumption of a coeval population with a uniform obscuration. In fact, there is strong spatial variation in Ks-band-excess disk fraction and non-uniform obscuration due to a dust lane that is identified in absorption in optical, infrared, and X-ray. The dust lane is likely part of a ring of material which includes the molecular core within W40. In contrast to the likely ongoing star formation in the dust lane, the molecular core is inactive. The star cluster has a spherical morphology, an isothermal sphere density profile, and mass segregation down to 1.5 M☉. However, other cluster properties, including a ≲ 1 Myr age estimate and ongoing star formation, indicate that the cluster is not dynamically relaxed. X-ray diffuse emission and a powerful flare from a young stellar object are also reported.

Abstract Copyright: ∼

Journal keyword(s): ISM: individual: W40 - open clusters and associations: individual: W40 - protoplanetary disks - stars: formation - stars: pre-main sequence - X-rays: stars

VizieR on-line data: <Available at CDS (J/ApJ/725/2485): table1.dat table2.dat table3.dat table4.dat>

Nomenclature: Tables 1, 2, 4: [KGF2010] NNN (Nos 1-225) = CXOW40 JHHMMSS.ss+DDMMSS.s N=225.

Simbad objects: 299

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Number of rows : 299
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 W 3 MoC 02 27 04.10 +61 52 27.1           ~ 1032 3
2 NGC 1333 OpC 03 29 11.3 +31 18 36           ~ 1450 1
3 IC 348 OpC 03 44 31.7 +32 09 32           ~ 1392 1
4 V* CY Tau Or* 04 17 33.7284990744 +28 20 46.812121656 14.52 14.68 13.40 12.59   M1.5 270 0
5 V* BP Tau Or* 04 19 15.8339827632 +29 06 26.926959492   13.13 12.12 11.89   K5/7Ve 664 0
6 V* GG Tau Or* 04 32 30.3506925552 +17 31 40.494063144 14.84 14.78 13.40 11.54   M0e+M2.0e 736 1
7 V* UZ Tau Y*O 04 32 42.81 +25 52 31.3           M4Ve+M1/3Ve 310 0
8 V* DL Tau Or* 04 33 39.0767679288 +25 20 38.101382952 14.04 14.59 13.40 11.85 10.89 K7Ve 335 0
9 V* DM Tau Or* 04 33 48.7336763736 +18 10 09.973460280 14.30 14.82 14.00     M2Ve 633 0
10 EM* LkCa 15 Or* 04 39 17.7911622816 +22 21 03.390090984   13.01 12.03 11.61   K5:Ve 689 1
11 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 4415 0
12 V* GM Aur Or* 04 55 10.9815576936 +30 21 59.373771876 14.59 13.351 12.242 11.798   K3Ve 688 0
13 HD 31648 Ae* 04 58 46.2655706952 +29 50 36.987625680 7.84 7.78 7.62 7.76 7.43 A5Vep 518 0
14 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2331 0
15 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1619 1
16 * sig Ori Y*O 05 38 44.7653828520 -02 36 00.283179888 2.54 3.58 3.79 3.87 4.11 O9.5V+B0.2V(n) 801 0
17 NGC 2074 As* 05 39 03 -69 29.9           ~ 62 0
18 NAME Ori B MoC 05 41 43.0 -01 54 44           ~ 1376 0
19 NGC 2024 Cl* 05 41 43 -01 50.5           ~ 1154 1
20 NGC 2071 RNe 05 47 10 +00 18.0           ~ 645 1
21 NGC 2244 OpC 06 32 10.8 +04 54 50           ~ 634 1
22 HD 47777 Y*O 06 40 42.2934096648 +09 39 21.310266708 6.95 7.79 7.93   7.721 B2IV 115 0
23 HD 261902 Y*O 06 40 58.5126133512 +09 33 31.721892912 9.88 10.20 10.23   10.174 B8 45 0
24 NGC 2282 RNe 06 46 51 +01 18.9   10       ~ 47 2
25 * rho Oph ** 16 25 35.11766 -23 26 49.8150 4.30 4.85 4.63 4.27 3.96 B2IV+B2V 648 0
26 NGC 6357 OpC 17 24 44 -34 12.2           ~ 274 0
27 HD 161084 * 17 44 49.6803098256 -29 44 47.524217892   10.18 10.11 10.06 9.896 A0/2IV/V 20 0
28 M 8 OpC 18 03 37 -24 23.2           ~ 613 1
29 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1612 0
30 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 1100 2
31 NAME Serpens South Cluster Cl* 18 30 03.00 -02 01 58.2           ~ 132 0
32 TGU H279 P7 DNe 18 30.7 -02 00           ~ 9 0
33 2MASS J18304624-0209377 Y*? 18 30 46.2484798992 -02 09 37.683201492           ~ 2 0
34 [KGF2010] 2 X 18 30 48.977 -02 08 23.86           ~ 1 0
35 2MASS J18304958-0211176 Y*O 18 30 49.587 -02 11 17.65           ~ 6 0
36 [KGF2010] 3 X 18 30 51.936 -02 05 15.97           ~ 1 0
37 2MASS J18305549-0209296 Y*? 18 30 55.5015336576 -02 09 29.880700668           ~ 2 0
38 2MASS J18305642-0204477 Y*? 18 30 56.4150293520 -02 04 47.989782804           ~ 2 0
39 2MASS J18305813-0208024 Y*O 18 30 58.1330126016 -02 08 02.617030176           ~ 7 0
40 2MASS J18305842-0201113 Y*? 18 30 58.4273495088 -02 01 11.392037724           ~ 2 0
41 2MASS J18310021-0203383 Y*O 18 31 00.220 -02 03 38.37           ~ 5 0
42 2MASS J18310067-0206025 Y*? 18 31 00.6716600376 -02 06 02.618934660           ~ 4 0
43 [KGF2010] 9 X 18 31 01.406 -02 03 50.83           ~ 1 0
44 [KGF2010] 10 * 18 31 02.1129299088 -02 06 52.229971080           ~ 1 0
45 [KGF2010] 11 * 18 31 02.6385996000 -02 12 20.978729280           ~ 1 0
46 2MASS J18310405-0208103 * 18 31 04.051 -02 08 10.36           ~ 1 0
47 2MASS J18310422-0209178 Y*? 18 31 04.229 -02 09 17.87           ~ 5 0
48 2MASS J18310427-0206509 Y*? 18 31 04.2701780064 -02 06 51.050593512           ~ 6 0
49 2MASS J18310431-0200358 Y*? 18 31 04.3203382920 -02 00 36.005282100           ~ 2 0
50 2MASS J18310483-0206498 Y*? 18 31 04.8286326216 -02 06 49.938716592           ~ 2 0
51 2MASS J18310497-0203178 Y*? 18 31 04.9774490952 -02 03 17.936468208           ~ 3 0
52 2MASS J18310501-0202475 Y*? 18 31 05.0130780096 -02 02 47.640192828           ~ 3 0
53 2MASS J18310525-0206340 Y*? 18 31 05.2428271896 -02 06 34.151470740           ~ 2 0
54 2MASS J18310538-0159595 * 18 31 05.382 -01 59 59.53           ~ 1 0
55 [KGF2010] 21 * 18 31 05.5624726608 -02 01 02.151174756           ~ 1 0
56 [KGF2010] 22 * 18 31 06.3439190904 -02 09 03.727217340           ~ 1 0
57 [KGF2010] 23 * 18 31 07.3119008904 -01 59 28.459441068           ~ 1 0
58 2MASS J18310785-0213062 * 18 31 07.856 -02 13 06.28           ~ 1 0
59 [KGF2010] 25 X 18 31 08.364 -01 57 11.11           ~ 1 0
60 2MASS J18310967-0156081 Y*? 18 31 09.6810616920 -01 56 08.289482712           ~ 2 0
61 [KGF2010] 27 X 18 31 10.356 -01 56 12.86           ~ 1 0
62 2MASS J18311151-0206006 * 18 31 11.514 -02 06 00.67           ~ 1 0
63 2MASS J18311173-0204192 Y*? 18 31 11.7278428080 -02 04 19.321359384           ~ 2 0
64 [KGF2010] 30 * 18 31 11.7380197848 -02 09 32.370337728           ~ 1 0
65 2MASS J18311221-0206246 NIR 18 31 12.210 -02 06 24.64           ~ 1 0
66 2MASS J18311237-0212503 NIR 18 31 12.372 -02 12 50.35           ~ 1 0
67 [KGF2010] 31 * 18 31 12.9937009872 -02 11 05.811574452           ~ 1 0
68 2MASS J18311327-0203515 Y*? 18 31 13.2729199656 -02 03 51.614104788           ~ 2 0
69 2MASS J18311336-0203484 Y*? 18 31 13.3601756424 -02 03 48.479714784           ~ 3 0
70 2MASS J18311410-0206525 * 18 31 14.101 -02 06 52.55           ~ 1 0
71 [KGF2010] 35 X 18 31 14.817 -02 11 43.32           ~ 1 0
72 2MASS J18311482-0203497 Y*O 18 31 14.8261452312 -02 03 49.987022364           B1 19 0
73 2MASS J18311526-0205355 Y*O 18 31 15.2571338616 -02 05 35.676403692           ~ 5 0
74 [RRR2010] W40-VLA 2 Y*? 18 31 15.279 -02 04 15.19           ~ 4 0
75 2MASS J18311594-0205386 Y*? 18 31 15.9339501960 -02 05 38.815919376           ~ 2 0
76 2MASS J18311599-0203543 Y*? 18 31 15.9849317736 -02 03 54.458368956           ~ 2 0
77 [KGF2010] 41 * 18 31 16.1453453736 -02 06 10.895437080           ~ 1 0
78 [KGF2010] 42 * 18 31 16.531 -02 07 43.36           ~ 1 0
79 2MASS J18311664-0208009 * 18 31 16.645 -02 08 00.97           ~ 1 0
80 2MASS J18311690-0205469 Y*? 18 31 16.9044047736 -02 05 47.111436096           ~ 2 0
81 2MASS J18311708-0209109 Y*? 18 31 17.085 -02 09 10.93           ~ 5 0
82 [KGF2010] 45 * 18 31 17.1275574264 -02 03 00.903493224           ~ 1 0
83 2MASS J18311730-0213155 * 18 31 17.303 -02 13 15.52           ~ 1 0
84 [KGF2010] 48 * 18 31 17.4518735016 -02 06 32.822523828           ~ 1 0
85 [KGF2010] 49 X 18 31 17.512 -02 13 46.83           ~ 1 0
86 2MASS J18311792-0208505 * 18 31 17.923 -02 08 50.51           ~ 1 0
87 2MASS J18311798-0206265 Y*? 18 31 17.9824935408 -02 06 26.617973904           ~ 4 0
88 2MASS J18311877-0203360 Y*? 18 31 18.7681522704 -02 03 36.146351988           ~ 3 0
89 2MASS J18311901-0204419 Y*? 18 31 19.0139640192 -02 04 42.059476200           ~ 2 0
90 2MASS J18311909-0204381 Y*? 18 31 19.0946220576 -02 04 38.236427652           ~ 2 0
91 2MASS J18311912-0207450 Y*? 18 31 19.1209771752 -02 07 45.189818184           ~ 5 0
92 [KGF2010] 56 * 18 31 19.226 -02 02 33.15           ~ 1 0
93 2MASS J18311946-0210253 Y*? 18 31 19.464 -02 10 25.35           ~ 2 0
94 [KGF2010] 58 * 18 31 19.5952754928 -02 04 39.086139108           ~ 1 0
95 2MASS J18311970-0203506 * 18 31 19.710 -02 03 50.61           ~ 1 0
96 2MASS J18311972-0201115 Y*? 18 31 19.721 -02 01 11.51           ~ 6 0
97 2MASS J18311972-0208343 * 18 31 19.725 -02 08 34.35           ~ 1 0
98 2MASS J18311986-0208161 Y*O 18 31 19.8563561880 -02 08 16.390141368           ~ 6 0
99 2MASS J18311995-0212359 Y*? 18 31 19.9526342184 -02 12 36.146858724           ~ 2 0
100 [KGF2010] 64 * 18 31 19.958 -02 04 06.57           ~ 1 0
101 2MASS J18311996-0206007 Y*? 18 31 19.9612350192 -02 06 00.885145320           ~ 2 0
102 [KGF2010] 66 * 18 31 20.0401020336 -02 03 59.400433116           ~ 1 0
103 2MASS J18312011-0211509 Y*? 18 31 20.120 -02 11 50.91           ~ 2 0
104 2MASS J18312017-0211358 * 18 31 20.176 -02 11 35.85           ~ 1 0
105 CXOW40 J183120.34-020435.7 * 18 31 20.3141546496 -02 04 36.543682236           ~ 1 0
106 2MASS J18312065-0209435 Y*? 18 31 20.658 -02 09 43.57           ~ 3 0
107 2MASS J18312074-0205181 Y*? 18 31 20.7431266296 -02 05 18.049960824           ~ 3 0
108 2MASS J18312074-0205087 * 18 31 20.7474439104 -02 05 08.920119336           ~ 1 0
109 2MASS J18312086-0159549 * 18 31 20.869 -01 59 54.91           ~ 1 0
110 2MASS J18312122-0204001 Y*? 18 31 21.2309152704 -02 04 00.168087216           ~ 3 0
111 2MASS J18312160-0205466 Y*? 18 31 21.6128558136 -02 05 46.795302888           ~ 3 0
112 [KGF2010] 77 X 18 31 21.628 -02 12 45.87           ~ 1 0
113 2MASS J18312170-0204529 Y*? 18 31 21.7098879024 -02 04 53.004025416           ~ 4 0
114 2MASS J18312171-0206416 NIR 18 31 21.718 -02 06 41.66           ~ 2 0
115 2MASS J18312197-0214501 Y*? 18 31 21.9744354336 -02 14 50.196386148           ~ 2 0
116 2MASS J18312199-0205265 Y*? 18 31 21.9884597280 -02 05 26.532959064           ~ 4 0
117 2MASS J18312219-0157527 * 18 31 22.2001369824 -01 57 53.017564968           ~ 1 0
118 [RRR2010] W40-VLA 3 * 18 31 22.328 -02 06 19.49           ~ 6 0
119 [KGF2010] 83 * 18 31 22.551 -02 05 36.09           ~ 1 0
120 2MASS J18312255-0204134 Y*? 18 31 22.5600912072 -02 04 13.515653280           ~ 2 0
121 [KGF2010] 85 * 18 31 22.5855360192 -02 06 10.647143964           ~ 1 0
122 2MASS J18312271-0205484 NIR 18 31 22.712 -02 05 48.49           ~ 1 0
123 2MASS J18312273-0203208 * 18 31 22.7357888952 -02 03 21.402030528           ~ 1 0
124 2MASS J18312276-0204269 NIR 18 31 22.766 -02 04 26.91           ~ 1 0
125 [KGF2010] 87 * 18 31 22.793 -02 05 32.82           ~ 1 0
126 [KGF2010] 88 * 18 31 22.811 -02 09 30.61           ~ 2 0
127 2MASS J18312284-0207033 * 18 31 22.849 -02 07 03.31           ~ 1 0
128 2MASS J18312285-0204125 Y*? 18 31 22.8578022504 -02 04 12.529851456           ~ 2 0
129 2MASS J18312294-0202200 * 18 31 22.942 -02 02 20.05           ~ 1 0
130 2MASS J18312305-0207162 Y*? 18 31 23.059 -02 07 16.24           ~ 3 0
131 [KGF2010] 93 * 18 31 23.1161235456 -02 05 21.047752536           ~ 1 0
132 [KGF2010] 94 * 18 31 23.218 -02 06 18.65           ~ 1 0
133 2MASS J18312324-0206179 Y*? 18 31 23.2464854856 -02 06 17.998267212           ~ 4 0
134 2MASS J18312327-0204386 Y*? 18 31 23.2791469968 -02 04 38.585897796           ~ 4 0
135 2MASS J18312330-0205139 Y*? 18 31 23.308 -02 05 13.95           ~ 2 0
136 GBS-VLA J183123.62-020535.8 * 18 31 23.6220856416 -02 05 35.752729488           ~ 8 0
137 2MASS J18312371-0205538 Y*? 18 31 23.7177493344 -02 05 53.907588384           ~ 4 0
138 2MASS J18312391-0201407 Y*? 18 31 23.918 -02 01 40.80           ~ 2 0
139 2MASS J18312395-0204107 * 18 31 23.9587169736 -02 04 10.831351908           B3 13 0
140 2MASS J18312396-0207040 NIR 18 31 23.961 -02 07 04.00           ~ 1 0
141 NAME W 40 IRS 2a * 18 31 23.9744924952 -02 05 29.491630944           ~ 14 1
142 2MASS J18312403-0203282 NIR 18 31 24.036 -02 03 28.27           ~ 1 0
143 2MASS J18312416-0206190 * 18 31 24.168 -02 06 19.05           ~ 2 0
144 2MASS J18312448-0207043 Y*? 18 31 24.485 -02 07 04.38           ~ 3 0
145 [KGF2010] 102 * 18 31 24.559 -02 02 31.74           ~ 2 0
146 [KGF2010] 103 * 18 31 24.6614150688 -02 05 08.574297036           ~ 1 0
147 [KGF2010] 104 X 18 31 24.741 -02 14 01.64           ~ 1 0
148 2MASS J18312479-0205348 Y*? 18 31 24.8055796512 -02 05 34.856254572           ~ 3 0
149 2MASS J18312486-0206195 Y*? 18 31 24.862 -02 06 19.59           ~ 3 0
150 2MASS J18312492-0205503 Y*? 18 31 24.9344615808 -02 05 50.335858680           ~ 3 0
151 2MASS J18312493-0206243 Y*? 18 31 24.937 -02 06 24.39           ~ 3 0
152 2MASS J18312498-0205437 * 18 31 24.980 -02 05 43.77           ~ 1 0
153 [KGF2010] 111 * 18 31 25.0853788728 -02 04 42.026631096           ~ 1 0
154 [KGF2010] 112 * 18 31 25.2505237104 -02 03 52.572438072           ~ 1 0
155 2MASS J18312534-0204418 Y*? 18 31 25.3473407880 -02 04 41.906842536           ~ 2 0
156 2MASS J18312538-0203326 Y*? 18 31 25.3859337384 -02 03 32.676572592           ~ 4 0
157 2MASS J18312539-0209077 Y*? 18 31 25.391 -02 09 07.75           ~ 3 0
158 2MASS J18312542-0205070 Y*? 18 31 25.428 -02 05 07.07           ~ 4 0
159 [KGF2010] 117 X 18 31 25.474 -02 08 12.88           ~ 1 0
160 2MASS J18312549-0205352 Y*? 18 31 25.5038213136 -02 05 35.264131944           ~ 3 0
161 2MASS J18312554-0200332 NIR 18 31 25.542 -02 00 33.22           ~ 1 0
162 [KGF2010] 119 * 18 31 25.554 -02 05 04.72           ~ 1 0
163 2MASS J18312564-0205147 * 18 31 25.644 -02 05 14.75           ~ 1 0
164 [KGF2010] 121 * 18 31 25.9174477320 -02 04 40.420478856           ~ 1 0
165 2MASS J18312601-0205169 Y*? 18 31 26.0248797696 -02 05 16.956048228           ~ 10 0
166 2MASS J18312611-0209246 Y*? 18 31 26.113 -02 09 24.67           ~ 2 0
167 [KGF2010] 123 X 18 31 26.250 -02 12 17.60           ~ 1 0
168 2MASS J18312636-0203130 * 18 31 26.370 -02 03 13.02           ~ 2 0
169 2MASS J18312638-0201187 Y*? 18 31 26.388 -02 01 18.78           ~ 5 0
170 2MASS J18312646-0210352 Y*? 18 31 26.460 -02 10 35.26           ~ 5 0
171 LBN 028.77+03.43 HII 18 31 26.5 -02 04 22           ~ 230 2
172 2MASS J18312701-0212024 Y*? 18 31 27.016 -02 12 02.42           ~ 5 0
173 2MASS J18312701-0204530 NIR 18 31 27.019 -02 04 53.07           ~ 1 0
174 2MASS J18312710-0204408 * 18 31 27.104 -02 04 40.83           ~ 1 0
175 2MASS J18312734-0205074 * 18 31 27.3563423894 -02 05 07.496602381           ~ 2 0
176 2MASS J18312735-0206359 Y*? 18 31 27.359 -02 06 35.98           ~ 2 0
177 [KGF2010] 130 X 18 31 27.400 -02 05 08.07           ~ 1 0
178 2MASS J18312743-0204534 Y*? 18 31 27.4336756704 -02 04 53.482767600           ~ 3 0
179 2MASS J18312745-0205118 Y*? 18 31 27.4602697752 -02 05 11.934787164           ~ 9 0
180 [KGF2010] 132 * 18 31 27.4664957112 -02 01 15.946254372           ~ 1 0
181 2MASS J18312750-0205061 * 18 31 27.504 -02 05 06.16           ~ 1 0
182 CXOW40 J183127.58-020517.7 * 18 31 27.5834553600 -02 05 17.671107732           ~ 4 0
183 2MASS J18312762-0206219 Y*? 18 31 27.6291616944 -02 06 22.045693284           ~ 2 0
184 GBS-VLA J183127.64-020513.5 * 18 31 27.6441754248 -02 05 13.378511148           ~ 4 0
185 2MASS J18312765-0205096 Y*O 18 31 27.6558573720 -02 05 09.694706676           ~ 11 0
186 GBS-VLA J183127.78-020449.5 * 18 31 27.7833841560 -02 04 49.464094548           ~ 2 0
187 [KGF2010] 140 * 18 31 27.788 -02 05 13.59           ~ 1 0
188 CXOW40 J183127.84-020523.5 * 18 31 27.827 -02 05 22.86     15.0     O9.5 22 1
189 [KGF2010] 142 * 18 31 27.847 -02 05 07.50           ~ 1 0
190 2MASS J18312793-0206241 Y*? 18 31 27.9384090624 -02 06 24.108483924           ~ 3 0
191 2MASS J18312793-0204290 NIR 18 31 27.940 -02 04 29.08           ~ 1 0
192 GBS-VLA J183128.01-020517.9 * 18 31 28.0015403280 -02 05 17.187564732           ~ 4 0
193 2MASS J18312846-0204187 NIR 18 31 28.464 -02 04 18.76           ~ 1 0
194 2MASS J18312862-0209275 Y*? 18 31 28.624 -02 09 27.54           ~ 2 0
195 2MASS J18312866-0205297 Y*? 18 31 28.6632266856 -02 05 29.804888544           ~ 8 0
196 2MASS J18312869-0209079 Y*? 18 31 28.699 -02 09 07.97           ~ 2 0
197 2MASS J18312875-0159125 Y*O 18 31 28.755 -01 59 12.57           ~ 4 0
198 2MASS J18312879-0203448 * 18 31 28.793 -02 03 44.81           ~ 1 0
199 2MASS J18312885-0157445 * 18 31 28.854 -01 57 44.55           ~ 1 0
200 2MASS J18312890-0204553 * 18 31 28.906 -02 04 55.35           ~ 1 0
201 2MASS J18312891-0205381 * 18 31 28.919 -02 05 38.10           ~ 1 0
202 2MASS J18312894-0209565 Y*? 18 31 28.9509995304 -02 09 56.587935492           ~ 5 0
203 2MASS J18312900-0205350 * 18 31 29.007 -02 05 35.04           ~ 1 0
204 2MASS J18312902-0206314 NIR 18 31 29.028 -02 06 31.41           ~ 1 0
205 2MASS J18312919-0204551 Y*? 18 31 29.191 -02 04 55.17           ~ 2 0
206 2MASS J18312938-0206490 Y*? 18 31 29.387 -02 06 49.03           ~ 2 0
207 2MASS J18312942-0205410 Y*? 18 31 29.426 -02 05 41.08           ~ 3 0
208 [KGF2010] 154 X 18 31 29.561 -02 04 05.96           ~ 1 0
209 [KGF2010] 155 * 18 31 29.656 -02 12 44.48           ~ 1 0
210 2MASS J18312970-0207340 Y*? 18 31 29.701 -02 07 34.02           ~ 3 0
211 2MASS J18312972-0206022 Y*? 18 31 29.725 -02 06 02.29           ~ 2 0
212 [KGF2010] 157 X 18 31 29.751 -02 14 38.37           ~ 1 0
213 2MASS J18312981-0207444 Y*? 18 31 29.8170337416 -02 07 44.387246640           ~ 7 0
214 2MASS J18313020-0204183 * 18 31 30.204 -02 04 18.33           ~ 2 0
215 2MASS J18313020-0207180 Y*? 18 31 30.206 -02 07 18.01           ~ 4 0
216 2MASS J18313049-0205158 Y*? 18 31 30.496 -02 05 15.88           ~ 3 0
217 2MASS J18313056-0205306 Y*? 18 31 30.561 -02 05 30.64           ~ 3 0
218 2MASS J18313065-0208398 NIR 18 31 30.652 -02 08 39.89           ~ 1 0
219 2MASS J18313069-0204522 * 18 31 30.696 -02 04 52.21           ~ 1 0
220 2MASS J18313077-0159275 * 18 31 30.773 -01 59 27.52           ~ 1 0
221 2MASS J18313084-0205409 * 18 31 30.842 -02 05 40.96           ~ 1 0
222 2MASS J18313101-0204405 Y*? 18 31 31.019 -02 04 40.58           ~ 3 0
223 2MASS J18313168-0206114 Y*? 18 31 31.685 -02 06 11.44           ~ 2 0
224 2MASS J18313187-0206022 * 18 31 31.875 -02 06 02.30           ~ 1 0
225 [KGF2010] 168 X 18 31 31.890 -02 00 03.70           ~ 1 0
226 2MASS J18313192-0208112 * 18 31 31.929 -02 08 11.28           ~ 1 0
227 2MASS J18313205-0204173 * 18 31 32.056 -02 04 17.34           ~ 1 0
228 2MASS J18313227-0204135 * 18 31 32.270 -02 04 13.53           ~ 1 0
229 2MASS J18313249-0203563 Y*? 18 31 32.494 -02 03 56.30           ~ 3 0
230 2MASS J18313277-0207496 Y*? 18 31 32.772 -02 07 49.61           ~ 2 0
231 2MASS J18313329-0205040 * 18 31 33.297 -02 05 04.08           ~ 1 0
232 2MASS J18313331-0213012 Y*? 18 31 33.315 -02 13 01.21           ~ 2 0
233 2MASS J18313353-0201382 * 18 31 33.536 -02 01 38.27           ~ 1 0
234 2MASS J18313371-0204378 Y*? 18 31 33.712 -02 04 37.89           ~ 2 0
235 [KGF2010] 178 X 18 31 34.021 -02 14 28.80           ~ 1 0
236 2MASS J18313457-0158555 NIR 18 31 34.572 -01 58 55.58           ~ 1 0
237 2MASS J18313461-0209034 * 18 31 34.615 -02 09 03.45           ~ 1 0
238 2MASS J18313464-0202599 * 18 31 34.645 -02 02 59.98           ~ 1 0
239 2MASS J18313508-0205533 * 18 31 35.085 -02 05 53.31           ~ 1 0
240 [KGF2010] 182 X 18 31 35.208 -02 10 23.38           ~ 1 0
241 2MASS J18313530-0204062 Y*? 18 31 35.300 -02 04 06.27           ~ 3 0
242 2MASS J18313533-0212548 Y*? 18 31 35.3327180424 -02 12 54.875796948           ~ 5 0
243 [KGF2010] 185 X 18 31 35.339 -02 04 52.76           ~ 1 0
244 2MASS J18313566-0212534 NIR 18 31 35.668 -02 12 53.43           ~ 1 0
245 2MASS J18313587-0203018 * 18 31 35.880 -02 03 01.86           ~ 1 0
246 2MASS J18313595-0213305 Y*? 18 31 35.955 -02 13 30.57           ~ 6 0
247 [KGF2010] 187 * 18 31 35.9957893488 -02 07 11.474808924           ~ 1 0
248 2MASS J18313646-0209212 Y*? 18 31 36.4848053208 -02 09 20.984953032           ~ 5 0
249 2MASS J18313680-0206418 * 18 31 36.807 -02 06 41.88           ~ 1 0
250 2MASS J18313698-0211494 * 18 31 36.9811409376 -02 11 49.577430516           ~ 1 0
251 2MASS J18313751-0205036 Y*? 18 31 37.514 -02 05 03.61           ~ 5 0
252 [KGF2010] 192 * 18 31 37.6824117024 -02 12 57.275411040           ~ 1 0
253 2MASS J18313770-0205510 Y*? 18 31 37.705 -02 05 51.07           ~ 2 0
254 2MASS J18313779-0203149 Y*? 18 31 37.796 -02 03 14.91           ~ 3 0
255 2MASS J18313789-0209080 NIR 18 31 37.898 -02 09 08.03           ~ 1 0
256 2MASS J18313791-0207453 NIR 18 31 37.916 -02 07 45.35           ~ 1 0
257 2MASS J18313815-0214236 NIR 18 31 38.154 -02 14 23.67           ~ 1 0
258 2MASS J18313832-0211449 NIR 18 31 38.326 -02 11 44.96           ~ 1 0
259 2MASS J18313878-0211155 NIR 18 31 38.788 -02 11 15.54           ~ 1 0
260 [KGF2010] 194 * 18 31 38.965 -02 09 22.56           ~ 1 0
261 2MASS J18313971-0205126 Y*? 18 31 39.712 -02 05 12.63           ~ 5 0
262 2MASS J18313979-0203558 NIR 18 31 39.791 -02 03 55.87           ~ 1 0
263 2MASS J18314002-0205339 Y*? 18 31 40.0218658200 -02 05 33.964142208           ~ 6 0
264 2MASS J18314024-0208372 * 18 31 40.243 -02 08 37.28           ~ 1 0
265 2MASS J18314048-0208149 Y*? 18 31 40.485 -02 08 14.94           ~ 5 0
266 2MASS J18314106-0211475 NIR 18 31 41.060 -02 11 47.59           ~ 1 0
267 2MASS J18314120-0209296 Y*? 18 31 41.200 -02 09 29.69           ~ 4 0
268 2MASS J18314128-0210080 Y*? 18 31 41.3075617608 -02 10 08.110260264           ~ 6 0
269 2MASS J18314162-0202154 * 18 31 41.6232711456 -02 02 15.464592240           ~ 2 0
270 2MASS J18314182-0207590 Y*? 18 31 41.8262911632 -02 07 59.174706540           ~ 5 0
271 [KGF2010] 202 * 18 31 41.8458552744 -02 06 55.797702372           ~ 1 0
272 2MASS J18314204-0206155 Y*? 18 31 42.0484107120 -02 06 15.540255396           ~ 2 0
273 2MASS J18314261-0207434 Y*? 18 31 42.6200160888 -02 07 43.503630528           ~ 6 0
274 2MASS J18314273-0204243 Y*? 18 31 42.731 -02 04 24.40           ~ 2 0
275 2MASS J18314313-0209286 * 18 31 43.134 -02 09 28.63           ~ 2 0
276 2MASS J18314346-0204350 Y*? 18 31 43.468 -02 04 35.04           ~ 2 0
277 [KGF2010] 209 * 18 31 43.5899551344 -02 04 05.034579600           ~ 1 0
278 2MASS J18314362-0209545 NIR 18 31 43.627 -02 09 54.54           ~ 1 0
279 2MASS J18314423-0201492 * 18 31 44.230 -02 01 49.24           ~ 1 0
280 2MASS J18314424-0201598 Y*? 18 31 44.2467140160 -02 01 59.920359816           ~ 3 0
281 2MASS J18314437-0207435 Y*? 18 31 44.3757558792 -02 07 43.458894120           ~ 4 0
282 2MASS J18314447-0208437 Y*? 18 31 44.4747770304 -02 08 43.818099036           ~ 3 0
283 2MASS J18314518-0212377 Y*? 18 31 45.1855501224 -02 12 37.710926604           ~ 2 0
284 2MASS J18314604-0206333 Y*? 18 31 46.0558915248 -02 06 33.402758400           ~ 5 0
285 2MASS J18314609-0206236 Y*? 18 31 46.0904956896 -02 06 23.532819120           ~ 3 0
286 2MASS J18314638-0210403 Y*? 18 31 46.3802663856 -02 10 40.325526336           ~ 6 0
287 2MASS J18314643-0210325 Y*? 18 31 46.4449292760 -02 10 32.557535940           ~ 5 0
288 2MASS J18314791-0211559 Y*O 18 31 47.9237395200 -02 11 55.982115456           ~ 5 0
289 2MASS J18314862-0207006 Y*? 18 31 48.6206827080 -02 07 00.636477852           ~ 3 0
290 [KGF2010] 222 * 18 31 49.1761298640 -02 05 08.803475844           ~ 1 0
291 [KGF2010] 221 * 18 31 49.2013921320 -02 11 52.803246912           ~ 1 0
292 [KGF2010] 223 X 18 31 52.925 -02 00 00.54           ~ 1 0
293 2MASS J18315335-0205248 NIR 18 31 53.350 -02 05 24.87           ~ 1 0
294 [KGF2010] 224 * 18 31 56.2877826072 -02 05 50.019217836           ~ 1 0
295 [KGF2010] 225 * 18 31 57.0753154992 -02 02 14.313074640           ~ 1 0
296 NAME Aql Rift DNe 18 32 -01.0           ~ 316 1
297 IRAS 19343+2026 MIR 19 36 31.05216 +20 33 09.2196           ~ 18 1
298 SH 2-106 HII 20 27 26.8 +37 22 49           ~ 440 1
299 NAME Cep B cor 22 57 07.00 +62 37 22.3           ~ 86 0

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