2015MNRAS.453.1026K

Query : 2015MNRAS.453.1026K

2015MNRAS.453.1026K - Mon. Not. R. Astron. Soc., 453, 1026-1046 (2015/October-2)

Classical T Tauri stars with VPHAS+ - I. H α and u-band accretion rates in the Lagoon Nebula M8.

KALARI V.M., VINK J.S., DREW J.E., BARENTSEN G., DRAKE J.J., EISLOFFEL J., MARTIN E.L., PARKER Q.A., UNRUH Y.C., WALTON N.A. and WRIGHT N.J.

Abstract (from CDS):

We estimate the accretion rates of 235 Classical T Tauri star (CTTS) candidates in the Lagoon Nebula using ugri H α photometry from the VST Photometric H α survey+. Our sample consists of stars displaying H α excess, the intensity of which is used to derive accretion rates. For a subset of 87 stars, the intensity of the u-band excess is also used to estimate accretion rates. We find the mean variation in accretion rates measured using H α and u-band intensities to be ∼ 0.17 dex, agreeing with previous estimates (0.04-0.4 dex) but for a much larger sample. The spatial distribution of CTTS align with the location of protostars and molecular gas suggesting that they retain an imprint of the natal gas fragmentation process. Strong accretors are concentrated spatially, while weak accretors are more distributed. Our results do not support the sequential star-forming processes suggested in the literature.

Abstract Copyright: © 2015 The Authors Published by Oxford University Press on behalf of the Royal Astronomical Society (2015)

Journal keyword(s): accretion, accretion discs - stars: pre-main-sequence - stars: variables: T Tauri, Herbig Ae/Be - open clusters and associations: individual : NGC 6530, Lagoon Nebula, M8

VizieR on-line data: <Available at CDS (J/MNRAS/453/1026): table2.dat table4.dat>

Simbad objects: 250

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Number of rows : 250
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 NGC 2264 OpC 06 40 53.7 +09 52 32           ~ 1876 0
2 NGC 3372 HII 10 45 02.23 -59 41 59.8           ~ 1071 2
3 NGC 3603 OpC 11 14 57.9 -61 14 32           ~ 1136 1
4 NAME Car-Sgr Arm PoG 15 00 -40.0           ~ 581 1
5 ATO J270.6335-24.2588 Or* 18 02 32.0625843408 -24 15 31.937115204           ~ 6 0
6 VPHAS J180233.5-241454.8 Or* 18 02 33.5442639888 -24 14 54.830282532           ~ 3 0
7 VPHAS J180233.7-241802.2 Or* 18 02 33.6742714608 -24 18 02.185531344           ~ 2 0
8 2MASS J18023559-2413024 Or* 18 02 35.5933601472 -24 13 02.416822788           ~ 4 0
9 V* V1743 Sgr Or* 18 02 37.32984 -24 16 24.0060           ~ 4 0
10 VPHAS J180238.4-241931.3 Or* 18 02 38.3558606376 -24 19 31.275620328           ~ 3 0
11 HD 164536 SB* 18 02 38.6215585296 -24 15 19.374907140 6.46 7.37 7.40 8.26   O7.5V(n)z 67 0
12 SPICY 71720 Or* 18 02 38.9666569886 -24 14 27.385634785           ~ 3 0
13 VPHAS J180239.7-241931.0 Or* 18 02 39.7137123096 -24 19 30.994680468           ~ 2 0
14 2MASS J18024000-2419345 Or* 18 02 39.9936691512 -24 19 34.572599328           ~ 4 0
15 VPHAS J180241.0-241216.2 Or* 18 02 40.9644683064 -24 12 16.229843748           ~ 3 0
16 VPHAS J180241.5-241611.0 Or* 18 02 41.5355000784 -24 16 11.042839668           ~ 2 0
17 VPHAS J180242.4-241515.8 Or* 18 02 42.4086035688 -24 15 15.841782504           ~ 3 0
18 V* V1748 Sgr Or* 18 02 43.3054010736 -24 17 43.267672608           ~ 3 0
19 SPICY 71769 Or* 18 02 43.6079457648 -24 12 17.958628368           ~ 3 0
20 VPHAS J180247.3-241820.5 Or* 18 02 47.3232242016 -24 18 20.519665596           ~ 3 0
21 VPHAS J180247.9-241412.4 Or* 18 02 47.9340142872 -24 14 12.354260640           ~ 3 0
22 UCAC4 329-121573 Or* 18 02 48.5405073984 -24 12 04.009667832       16.028   ~ 4 0
23 VPHAS J180248.8-241547.5 Or* 18 02 48.8335628688 -24 15 47.543504292           ~ 3 0
24 2MASS J18024982-2413508 Or* 18 02 49.8370497984 -24 13 50.905437060           ~ 4 0
25 2MASS J18025038-2418222 Or* 18 02 50.3736337536 -24 18 22.405409244           ~ 4 0
26 2MASS J18025094-2422199 Or* 18 02 50.9309494488 -24 22 19.836205248           ~ 4 0
27 VPHAS J180252.0-241317.6 Or* 18 02 51.9782125985 -24 13 17.562973404           ~ 2 0
28 VPHAS J180252.1-241322.2 Or* 18 02 52.0895310055 -24 13 22.148953361           ~ 2 0
29 2MASS J18025223-2411261 Or* 18 02 52.2237236952 -24 11 26.197343592           ~ 11 0
30 Ve 2-48 Or* 18 02 52.4564371056 -24 18 44.419936104           ~ 20 0
31 VPHAS J180252.5-241302.3 Or* 18 02 52.4785164168 -24 13 02.288951652           ~ 2 0
32 VPHAS J180254.0-241817.5 Or* 18 02 53.9625880440 -24 18 17.514270684           ~ 2 0
33 EM* LkHA 104 Or* 18 02 54.2860628856 -24 20 56.637213288     15.80     ~ 14 0
34 SPICY 71876 Or* 18 02 54.9506829864 -24 15 53.351976752           ~ 4 0
35 2MASS J18025506-2418450 Or* 18 02 55.0576370760 -24 18 45.153008748           ~ 3 0
36 VPHAS J180255.3-241406.9 Or* 18 02 55.2552584064 -24 14 06.852089940           ~ 2 0
37 VPHAS J180256.0-241902.9 Or* 18 02 56.0408664864 -24 19 02.927161704           ~ 2 0
38 VPHAS J180256.8-240707.1 Or* 18 02 56.8334416104 -24 07 07.100561496           ~ 3 0
39 VPHAS J180257.9-241722.3 Or* 18 02 57.9248340037 -24 17 22.335771262           ~ 2 0
40 VPHAS J180259.4-241820.9 Or* 18 02 59.4507118704 -24 18 20.931925320           ~ 2 0
41 VPHAS J180301.5-242011.5 Or* 18 03 01.5005727169 -24 20 11.589020527           ~ 2 0
42 VPHAS J180301.6-241942.6 Or* 18 03 01.6095937746 -24 19 42.618663388           ~ 2 0
43 VPHAS J180301.8-241959.3 Y*O 18 03 01.76 -24 19 59.3           ~ 2 0
44 VPHAS J180302.8-240703.5 Or* 18 03 02.7681883416 -24 07 03.444673008           ~ 2 0
45 VPHAS J180307.3-241933.9 Or* 18 03 07.3066996320 -24 19 33.988377576           ~ 3 0
46 VPHAS J180307.5-241713.3 Or* 18 03 07.4997164280 -24 17 13.393987152           ~ 2 0
47 VPHAS J180309.3-242939.7 Or* 18 03 09.2791997274 -24 29 39.750176873           ~ 2 0
48 CXOU J180316.5-241934 Or* 18 03 16.5505424400 -24 19 34.070267712           ~ 4 0
49 VPHAS J180317.5-241801.5 Or* 18 03 17.5158163848 -24 18 01.542612096           ~ 3 0
50 VPHAS J180319.2-243106.7 Or* 18 03 19.2483333107 -24 31 06.722415729           ~ 2 0
51 2MASS J18032080-2415430 Or* 18 03 20.8182677352 -24 15 43.044853500           ~ 6 0
52 GES J18032223-2420140 Or* 18 03 22.2345805416 -24 20 14.007390828           ~ 7 0
53 CXOU J180323.8-241456 Or* 18 03 23.8811215706 -24 14 57.135310099           ~ 3 0
54 VPHAS J180325.4-243112.2 Or* 18 03 25.3923733872 -24 31 12.323786160           ~ 2 0
55 CXOU J180325.5-241602 Or* 18 03 25.5380940384 -24 16 03.157611816           ~ 5 0
56 Cl* NGC 6530 SCB 37 Or* 18 03 25.6254375432 -24 20 56.980587480   16.657 15.838     ~ 5 0
57 VPHAS J180326.7-241551.0 Or* 18 03 26.6910525912 -24 15 50.990766228           ~ 2 0
58 VPHAS J180327.5-241302.8 Or* 18 03 27.4761918240 -24 13 02.772488028           ~ 2 0
59 CXOU J180327.9-241527 Or* 18 03 28.0170509208 -24 15 27.430442856           ~ 5 0
60 VPHAS J180328.1-242538.1 Or* 18 03 28.1299807560 -24 25 37.923559176           ~ 2 0
61 2MASS J18033099-2407269 Or* 18 03 30.9969888240 -24 07 26.991897852           ~ 4 0
62 CXOU J180331.4-241836 Or* 18 03 31.4323875072 -24 18 36.441903528   20.254 18.706   16.367 ~ 10 0
63 2MASS J18033304-2416231 Or* 18 03 33.0510525720 -24 16 23.095076088   20.997 19.271   16.406 ~ 5 0
64 CXOU J180334.5-242447 Or* 18 03 34.5829942224 -24 24 47.278620072           ~ 4 0
65 VPHAS J180334.7-241012.4 Or* 18 03 34.6786474632 -24 10 12.429075072           ~ 2 0
66 GES J18033484-2419406 Or* 18 03 34.8469621560 -24 19 40.650489012           ~ 6 0
67 GES J18033601-2431285 Or* 18 03 36.0066934776 -24 31 28.552949508           ~ 6 0
68 M 8 OpC 18 03 37 -24 23.2           ~ 644 1
69 VPHAS J180337.3-243216.7 Or* 18 03 37.3312980936 -24 32 16.713959244           ~ 3 0
70 VPHAS J180337.6-243217.7 Or* 18 03 37.5757764240 -24 32 17.747860056           ~ 3 0
71 2MASS J18033934-2425239 Or* 18 03 39.3418534272 -24 25 23.993360796   19.045 17.303   14.893 G3-G7III 6 0
72 NAME Her 36SE Y*O 18 03 40.3201232304 -24 22 42.857540472 10.26 11.022 10.372 10.267   O8V+ 210 0
73 GES J18034055-2432076 Or* 18 03 40.5515554776 -24 32 07.526503140           ~ 6 0
74 VPHAS J180340.9-243139.4 Or* 18 03 40.8873021768 -24 31 39.415069164           ~ 2 0
75 NAME Hourglass Nebula ISM 18 03 41.1 -24 22 37           ~ 79 2
76 Cl* NGC 6530 SCB 174 Or* 18 03 43.6339649086 -24 23 39.714543050   18.121 16.690   14.780 ~ 17 0
77 2MASS J18034383-2416180 Or* 18 03 43.8524611416 -24 16 18.140093760           ~ 4 0
78 2MASS J18034495-2416085 Or* 18 03 44.9403786840 -24 16 08.597881920   18.392 17.052   15.229 ~ 13 0
79 Cl* NGC 6530 SCB 184 Or* 18 03 45.1858557120 -24 23 25.166229612   17.736 16.434 15.881 14.324 F1-F5III 15 0
80 GES J18034525-2432336 Or* 18 03 45.2466323160 -24 32 33.554075676           ~ 7 0
81 Cl* NGC 6530 SCB 202 Or* 18 03 46.9925606904 -24 22 04.510186464   17.890 16.534   14.392 ~ 12 0
82 Cl* NGC 6530 SCB 203 Or* 18 03 47.2003389144 -24 24 21.362453316 18.593 17.394 16.109   14.409 K2-K3V 18 0
83 Cl* NGC 6530 SCB 206 Or* 18 03 47.7215527872 -24 25 07.693166532   15.968 14.953   13.778 ~ 6 0
84 VPHAS J180347.9-240856.7 Or* 18 03 47.9102947008 -24 08 56.826616416           ~ 3 0
85 Cl* NGC 6530 SCB 209 Or* 18 03 48.2578589064 -24 22 23.388897792 16.978 15.790 14.719   13.350 F9-G3V 15 0
86 Cl* NGC 6530 SCB 222 Or* 18 03 49.2005206584 -24 22 08.528087856 19.363 18.051 16.836   15.083 ~ 19 0
87 V* V1761 Sgr Or* 18 03 49.3526715072 -24 23 37.637733048 19.725 18.059 16.762 15.88 15.111 K2-K3V 18 0
88 CXOU J180349.8-242146 Or* 18 03 49.8472908672 -24 21 46.623464136   18.326 17.052   15.185 ~ 5 0
89 Cl* NGC 6530 SCB 238 Or* 18 03 50.7059573664 -24 20 13.071326784 19.090 17.893 16.551   14.615 ~ 16 0
90 EM* LkHA 108 Or* 18 03 50.7590261472 -24 21 10.836157104 12.541 12.137 11.714   11.003 ~ 25 0
91 CXOU J180350.9-242214 Or* 18 03 50.8845617832 -24 22 14.914552764           ~ 4 0
92 VPHAS J180351.9-241410.7 Or* 18 03 51.8749812768 -24 14 10.789666008           ~ 2 0
93 Cl* NGC 6530 WFI 19447 Or* 18 03 52.0514927880 -24 22 33.808648404 19.655 19.178 17.931   15.915 K7.5-M0.5V 15 0
94 * 9 Sgr Y*O 18 03 52.4450051016 -24 21 38.632254012 5.08 5.97 5.97 5.72 5.70 O4V((f))z 563 0
95 VPHAS J180353.1-241251.5 Or* 18 03 53.1271473984 -24 12 51.473663892           ~ 2 0
96 Cl* NGC 6530 WFI 26328 Or* 18 03 53.9139581112 -24 18 29.570847228 19.044 19.814 18.863   16.656 ~ 11 0
97 CXOU J180355.6-242225 Or* 18 03 55.6443747096 -24 22 25.589382528           ~ 3 0
98 VPHAS J180356.4-241814.5 Or* 18 03 56.4180232272 -24 18 14.518439208           ~ 2 0
99 V* V1764 Sgr Or* 18 03 58.2584964168 -24 16 49.179488268 18.395 18.356 16.942 16.15 14.995 ~ 12 0
100 Cl* NGC 6530 WFI 26577 Or* 18 03 58.9790900208 -24 18 17.735373720 20.389 18.903 17.480   15.398 M0.5-M1V 13 0
101 VPHAS J180400.1-243318.0 Or* 18 04 00.0952034896 -24 33 18.047001286           ~ 3 0
102 2MASS J18040157-2416323 Or* 18 04 01.5817265520 -24 16 32.731325688   20.943 19.122   16.578 ~ 5 0
103 Cl* NGC 6530 WFI 27090 Or* 18 04 02.7637070064 -24 17 54.752942580 22.307 20.291 18.965   16.788 ~ 8 0
104 VPHAS J180403.3-243309.6 Or* 18 04 03.2598574120 -24 33 09.656549400           ~ 3 0
105 CXOU J180404.1-241743 Or* 18 04 04.1801439387 -24 17 43.121910771           ~ 4 0
106 VPHAS J180404.3-242901.2 Or* 18 04 04.2451920240 -24 29 01.168380636           ~ 3 0
107 Cl* NGC 6530 WFI 23677 Or* 18 04 04.2948316200 -24 20 11.632247088 19.172 19.330 18.155   16.129 ~ 8 0
108 Cl* NGC 6530 WFI 14185 Or* 18 04 05.1343713082 -24 25 58.426778292   18.301 17.056   15.239 ~ 9 0
109 2MASS J18040550-2417031 Or* 18 04 05.5025134488 -24 17 03.196353228   18.819 17.679   15.723 ~ 5 0
110 Cl* NGC 6530 WFI 31634 Or* 18 04 05.6555944656 -24 15 39.447324468 20.426 18.546 17.154   15.334 ~ 16 0
111 Cl* NGC 6530 SCB 891 Y*O 18 04 06.3640582512 -24 16 16.077710100   18.894 17.700   15.753 ~ 7 0
112 Cl* NGC 6530 WFI 20948 Or* 18 04 07.1658506088 -24 21 40.630011948   20.105 18.733   16.435 ~ 13 0
113 VPHAS J180407.4-242245.7 Or* 18 04 07.3581175945 -24 22 45.699724250           ~ 2 0
114 Cl* NGC 6530 SCB 388 Or* 18 04 07.8070376688 -24 23 11.420458188   18.067 16.647   14.847 ~ 7 0
115 Cl* NGC 6530 SCB 390 Or* 18 04 07.8302285952 -24 23 12.671157444   17.278 15.990   14.365 ~ 15 0
116 VPHAS J180408.2-242921.9 Or* 18 04 08.2419989184 -24 29 21.867837396           ~ 2 0
117 VPHAS J180408.5-242125.5 Or* 18 04 08.5093953912 -24 21 25.437993300           ~ 3 0
118 GES J18040862-2431568 Or* 18 04 08.6228997240 -24 31 56.621063964           ~ 7 0
119 VPHAS J180409.5-241630.5 Or* 18 04 09.5280975816 -24 16 30.442078056           ~ 2 0
120 Cl* NGC 6530 SCB 418 Or* 18 04 10.1990032992 -24 23 22.640088660 19.436 18.069 16.545   14.394 ~ 14 0
121 Cl* NGC 6530 SCB 422 Or* 18 04 10.5311496000 -24 26 55.830537456 17.692 17.115 15.689 15.194 13.676 ~ 18 0
122 2MASS J18041060-2425480 Or* 18 04 10.6135115064 -24 25 47.912040912   19.969 18.711   16.269 ~ 12 0
123 EM* LkHA 110 Or* 18 04 11.4131126856 -24 27 16.163552556 17.702 17.534 16.317   14.396 G3-G5IV-V 18 0
124 SPICY 72464 Or* 18 04 11.8233622968 -24 23 29.207856984           ~ 4 0
125 Cl* NGC 6530 SCB 438 Or* 18 04 12.1482386496 -24 22 19.776549216 19.515 18.286 16.899   15.020 ~ 18 0
126 V* V1773 Sgr Or* 18 04 12.4489786944 -24 11 51.571948956   18.269 17.301   15.465 ~ 11 0
127 Cl* NGC 6530 SCB 440 Or* 18 04 12.4838561544 -24 19 43.023828360 18.606 17.081 15.773   14.076 K0-K2V 20 0
128 Cl* NGC 6530 WFI 21548 Or* 18 04 12.7450895400 -24 21 20.625827544 21.337 19.848 18.709   16.487 ~ 8 0
129 VPHAS J180412.9-241520.6 Or* 18 04 12.8882824050 -24 15 20.504943640           ~ 2 0
130 VPHAS J180413.3-241453.2 Or* 18 04 13.3416657648 -24 14 53.127129300           ~ 2 0
131 VPHAS J180413.5-241737.3 Or* 18 04 13.5149184528 -24 17 37.234453524           ~ 2 0
132 Cl* NGC 6530 WFI 25568 Or* 18 04 14.6586072888 -24 19 04.090974600   20.141 18.410   15.983 ~ 17 0
133 Cl* NGC 6530 WFI 19795 Or* 18 04 14.7107460336 -24 22 19.411428976           ~ 3 0
134 Cl* NGC 6530 WFI 16084 Or* 18 04 14.7477967272 -24 24 32.478250356 21.096 21.331 19.493   16.652 ~ 9 0
135 Cl* NGC 6530 WFI 13438 Or* 18 04 15.1787476968 -24 26 42.616556376 19.587 20.920 19.296   16.248 ~ 9 0
136 V* V1775 Sgr Or* 18 04 15.7361475192 -24 19 01.658022204 18.500 16.829 15.505   13.829 ~ 20 0
137 2MASS J18041577-2425158 Or* 18 04 15.7700467248 -24 25 15.672976248           ~ 5 0
138 Cl* NGC 6530 SCB 486 Or* 18 04 15.9032331792 -24 18 46.276127712 19.583 18.811 17.561   15.423 ~ 21 0
139 Cl* NGC 6530 WFI 18021 Or* 18 04 16.2143717592 -24 23 24.031746996 19.959 18.296 16.933   15.121 ~ 17 0
140 V* V1778 Sgr Or* 18 04 16.3907947992 -24 24 38.977473420 19.725 18.188 16.771   14.774 G8-K2V 22 0
141 VPHAS J180416.4-243252.2 Or* 18 04 16.4256814824 -24 32 52.155645864           ~ 2 0
142 Cl* NGC 6530 SCB 496 Or* 18 04 16.5191665584 -24 29 08.670924708   17.737 16.521   15.053 ~ 8 0
143 VPHAS J180416.8-243230.0 Or* 18 04 16.7966853912 -24 32 29.976260280           ~ 2 0
144 Cl* NGC 6530 WFI 29815 Or* 18 04 17.1384424224 -24 16 27.487346304 21.105 19.325 17.602   15.375 ~ 12 0
145 V* V1780 Sgr Or* 18 04 17.39016 -24 19 09.9264 18.574 18.817 17.306   15.122 ~ 18 0
146 Cl* NGC 6530 SCB 893 Or* 18 04 17.7635407680 -24 17 09.480803964 20.338 18.915 17.385   15.323 ~ 10 0
147 V* V1779 Sgr Or* 18 04 17.8795739040 -24 17 46.796496000 19.764 17.744 16.260   14.386 ~ 20 0
148 VPHAS J180418.6-241509.7 Or* 18 04 18.6177365712 -24 15 09.711755460           ~ 2 0
149 Cl* NGC 6530 SCB 531 Y*O 18 04 19.320432 -24 22 54.47928   17.798 16.397 15.379 14.959 K5-K7V 18 0
150 Cl* NGC 6530 WFI 14041 Or* 18 04 19.4135410464 -24 26 07.140497028 20.974 19.345 17.852   15.767 ~ 18 0
151 UCAC4 329-122345 Or* 18 04 19.4581933200 -24 23 32.985907008   18.631 17.282 15.92 15.486 ~ 12 0
152 Cl* NGC 6530 WFI 21890 Or* 18 04 19.5398449026 -24 21 09.845835164   19.139 17.595   15.439 ~ 6 0
153 2MASS J18041960-2426125 Or* 18 04 19.6098062328 -24 26 12.433336548           ~ 3 0
154 SPICY 72547 Or* 18 04 19.8621171528 -24 28 23.647528128           ~ 5 0
155 Cl* NGC 6530 SCB 540 Or* 18 04 20.0361664296 -24 22 48.087149916 18.864 17.389 16.143   14.354 ~ 20 0
156 GES J18042030-2427521 Or* 18 04 20.3012030544 -24 27 52.012776024   20.199 18.842   16.469 ~ 9 0
157 Cl* NGC 6530 SCB 547 Or* 18 04 20.3680759800 -24 28 19.421558256 17.857 16.301 14.932   13.205 ~ 19 0
158 Cl* NGC 6530 WFI 18612 Y*O 18 04 20.50344 -24 23 04.0308 20.773 19.621 17.855   15.468 A8-F2III 16 0
159 Cl* NGC 6530 SCB 552 Or* 18 04 20.7814897944 -24 28 02.496923148 18.211 16.923 15.355   13.295 ~ 14 0
160 Cl* NGC 6530 SCB 556 Or* 18 04 21.0898811069 -24 23 25.244731740 19.792 18.419 16.923   14.734 G8III-K3V 23 0
161 Cl* NGC 6530 WFI 18509 Or* 18 04 21.2531859336 -24 23 07.646563284   20.192 18.575   16.011 ~ 11 0
162 SPICY 72562 Or* 18 04 21.5874076440 -24 19 27.253720056           ~ 3 0
163 VPHAS J180422.1-241311.0 Or* 18 04 22.0823031312 -24 13 10.998773616           ~ 2 0
164 Cl* NGC 6530 WFI 25171 Or* 18 04 22.2812597088 -24 19 21.876951612 20.132 20.798 19.663   17.200 ~ 9 0
165 Cl* NGC 6530 SCB 895 Or* 18 04 22.6954377672 -24 16 05.040199056   18.725 17.452   15.295 ~ 11 0
166 2MASS J18042419-2416251 Or* 18 04 24.1990483800 -24 16 25.026827664           ~ 4 0
167 VPHAS J180424.3-243226.0 Or* 18 04 24.2796345360 -24 32 25.967833260           ~ 2 0
168 2MASS J18042445-2412441 Or* 18 04 24.4352349936 -24 12 44.231521032           ~ 9 0
169 Cl* NGC 6530 WFI 19545 Or* 18 04 24.9266637720 -24 22 30.002753352 20.763 19.024 17.647   15.738 ~ 11 0
170 V* V1785 Sgr Or* 18 04 25.2047575968 -24 13 34.056683220 20.287 18.684 17.184   15.177 ~ 14 0
171 VPHAS J180426.5-242108.3 Or* 18 04 26.4704873040 -24 21 08.211576204           ~ 2 0
172 Cl* NGC 6530 WFI 20020 Or* 18 04 26.7371712912 -24 22 13.673987400 19.484 18.486 17.047   15.008 ~ 16 0
173 Cl* NGC 6530 WFI 24884 Or* 18 04 27.3252973368 -24 19 31.775473380   20.286 18.689   16.134 ~ 7 0
174 Cl* NGC 6530 WFI 34380 Or* 18 04 27.3557079624 -24 14 27.075106644   18.999 17.830   15.821 ~ 10 0
175 VPHAS J180427.5-242106.7 Or* 18 04 27.4787221728 -24 21 06.667916796           ~ 2 0
176 VPHAS J180427.5-242801.4 Or* 18 04 27.5172645552 -24 28 01.372271880           ~ 2 0
177 VPHAS J180428.0-241202.8 Or* 18 04 27.9975511152 -24 12 02.855891520           ~ 2 0
178 V* V1790 Sgr Or* 18 04 28.2302186136 -24 25 47.903443680 20.022 19.835 18.440   16.187 ~ 16 0
179 Cl* NGC 6530 WFI 22057 Or* 18 04 28.8163216176 -24 21 04.462067340   20.403 19.021   16.512 ~ 10 0
180 2MASS J18042906-2423070 Or* 18 04 29.0559587352 -24 23 06.855545976           ~ 7 0
181 Cl* NGC 6530 SCB 666 Or* 18 04 29.2407245304 -24 23 43.020296340 18.666 17.849 16.486   14.554 ~ 19 0
182 VPHAS J180429.4-243148.8 Or* 18 04 29.3923611888 -24 31 48.778635432           ~ 2 0
183 VPHAS J180429.5-241638.7 Or* 18 04 29.4623473636 -24 16 38.652830343           ~ 2 0
184 Cl* NGC 6530 WFI 21779 Or* 18 04 29.6573008224 -24 21 13.713604740 19.036 19.178 17.618   15.390 ~ 10 0
185 2MASS J18042978-2422358 Or* 18 04 29.7672730752 -24 22 35.874804216           ~ 4 0
186 Cl* NGC 6530 SCB 897 Or* 18 04 29.9019764496 -24 14 29.524909020 20.487 19.197 17.812   15.508 M0-M1V 18 0
187 Cl* NGC 6530 ZW 70B Y*O 18 04 30.9095480112 -24 26 33.451136988   16.379 15.551   13.822 ~ 15 0
188 V* V1793 Sgr Or* 18 04 30.91824 -24 26 44.8836   18.415 17.072   15.084 ~ 13 0
189 NGC 6530 OpC 18 04 31 -24 21.5           ~ 443 0
190 VPHAS J180431.5-240429.6 Or* 18 04 31.5142906128 -24 04 29.623617372           ~ 3 0
191 VPHAS J180431.7-240544.9 Or* 18 04 31.7263302720 -24 05 44.898187416           ~ 2 0
192 Cl* NGC 6530 WFI 20517 Or* 18 04 31.7477799576 -24 21 55.526337432 21.611 20.489 18.882   16.368 ~ 12 0
193 EM* LkHA 114 Or* 18 04 33.2175695760 -24 27 17.761190508 16.9 17.618 16.303   14.399 ~ 17 0
194 2MASS J18043370-2423535 Or* 18 04 33.7079749680 -24 23 53.417155704           ~ 5 0
195 Cl* NGC 6530 SCB 726 Or* 18 04 35.0807934000 -24 26 12.594659712 19.448 18.196 16.781   14.912 ~ 18 0
196 Cl* NGC 6530 WFI 19318 Or* 18 04 36.2290566120 -24 22 38.495111412 18.595 19.890 18.459   16.250 ~ 14 0
197 Cl* NGC 6530 WFI 20216 Or* 18 04 36.7872581520 -24 22 06.823120008 21.486 21.064 19.470   16.781 ~ 8 0
198 VPHAS J180436.9-242033.5 Or* 18 04 36.9284693832 -24 20 33.358615276           ~ 2 0
199 Cl* NGC 6530 WFI 16098 Or* 18 04 37.0300019568 -24 24 31.854139488 20.205 19.137 17.573   15.431 ~ 18 0
200 VPHAS J180438.6-241148.2 Or* 18 04 38.6187907440 -24 11 48.299812692           ~ 2 0
201 SPICY 72784 Or* 18 04 39.4288142328 -24 17 55.734011768           ~ 3 0
202 Cl* NGC 6530 WFI 13000 Or* 18 04 39.4348256712 -24 27 09.055076940 20.604 19.385 17.641   15.223 F7-F8V 19 0
203 NGC 6530 136 Or* 18 04 39.4500443568 -24 28 24.230491644   15.015 14.191   13.203 ~ 7 0
204 Cl* NGC 6530 WFI 28075 Or* 18 04 39.5164645102 -24 17 20.478769951 22.097 19.230 17.645   15.552 ~ 10 0
205 2MASS J18043984-2423049 Or* 18 04 39.8308181400 -24 23 05.113779036   18.031 16.959   14.990 ~ 13 0
206 VPHAS J180440.2-242414.4 Or* 18 04 40.2170583432 -24 24 14.611742640           ~ 2 0
207 SPICY 72804 Or* 18 04 40.5810695640 -24 14 37.380249492           ~ 3 0
208 V* V1800 Sgr Or* 18 04 40.8768634440 -24 17 10.848259716 19.139 18.198 16.740   14.732 ~ 18 0
209 NGC 6530 135 Or* 18 04 41.0334934368 -24 28 13.804082148   14.763 14.114   13.328 ~ 7 0
210 VPHAS J180441.3-241427.8 Or* 18 04 41.2977804072 -24 14 27.968042472           ~ 2 0
211 VPHAS J180441.8-242632.6 Or* 18 04 41.7877350130 -24 26 32.593751975           ~ 2 0
212 CXOU J180442.3-241551 Or* 18 04 42.3462852048 -24 15 51.954594912   21.121 19.665   17.138 ~ 4 0
213 VPHAS J180443.2-241259.3 Or* 18 04 43.2134103312 -24 12 59.390762148           ~ 2 0
214 Cl* NGC 6530 SCB 810 Or* 18 04 43.5151983552 -24 27 38.619388476   18.077 16.265   13.938 K2-K3V 17 0
215 2MASS J18044363-2427591 Or* 18 04 43.6183065984 -24 27 59.203818288   20.293 18.509   15.949 ~ 11 0
216 Cl* NGC 6530 SCB 839 Or* 18 04 45.5297454456 -24 27 53.494497540   17.989 16.625   14.765 ~ 10 0
217 Cl* NGC 6530 WFI 36451 Or* 18 04 46.3531347600 -24 13 32.268286200   20.405 18.794   16.578 ~ 12 0
218 VPHAS J180448.1-243113.8 Or* 18 04 48.0812558184 -24 31 13.722574044           ~ 2 0
219 VPHAS J180448.1-240813.0 Or* 18 04 48.1228956011 -24 08 13.162479422           ~ 2 0
220 V* V1803 Sgr Or* 18 04 48.508608 -24 26 40.40016   18.437 17.102 16.36 14.946 ~ 9 0
221 VPHAS J180449.3-240404.7 Or* 18 04 49.3183812744 -24 04 04.835684604           ~ 2 0
222 EM* LkHA 115 Ae* 18 04 50.5999226472 -24 25 42.095461620   12.380 11.949   11.198 B7e 39 0
223 2MASS J18045174-2425474 * 18 04 51.7207650600 -24 25 47.594147808           ~ 2 0
224 VPHAS J180455.1-240644.5 Or* 18 04 55.0986820848 -24 06 44.531279064           ~ 2 0
225 Cl* NGC 6530 WFI 15668 Or* 18 04 55.9868012688 -24 24 47.657481660   20.574 18.908   16.179 ~ 7 0
226 VPHAS J180457.0-240714.0 Or* 18 04 57.0386732544 -24 07 14.113677144           ~ 2 0
227 EM* LkHA 116 Or* 18 04 58.6226050752 -24 24 36.457591104   19.172 17.521   15.020 ~ 15 0
228 2MASS J18050254-2424436 Or* 18 05 02.5369063368 -24 24 43.835495616           ~ 4 0
229 GES J18050300-2425212 Or* 18 05 02.9862348264 -24 25 21.231206580           ~ 6 0
230 VPHAS J180505.1-241247.3 Or* 18 05 05.0380155648 -24 12 47.436896376           ~ 2 0
231 2MASS J18050699-2418245 Or* 18 05 06.9872184624 -24 18 24.745298292           ~ 4 0
232 VPHAS J180507.7-241332.4 Or* 18 05 07.6398477960 -24 13 32.515555476           ~ 2 0
233 SPICY 73063 Or* 18 05 08.1339739752 -24 19 49.250622396           ~ 3 0
234 VPHAS J180508.5-240515.2 Or* 18 05 08.4957488352 -24 05 15.324845244           ~ 2 0
235 VPHAS J180508.5-241646.0 Or* 18 05 08.5134798432 -24 16 46.137246816           ~ 2 0
236 HD 165052 SB* 18 05 10.5506592816 -24 23 54.847798080 6.16 6.98 6.87 7.77   O6.5V((f))z 282 1
237 VPHAS J180514.6-243117.3 Or* 18 05 14.6082887640 -24 31 17.121019116           ~ 2 0
238 VPHAS J180517.9-243028.6 Or* 18 05 17.8629677952 -24 30 28.430956800           ~ 2 0
239 GES J18051853-2431164 Or* 18 05 18.5254413384 -24 31 16.244931540           ~ 7 0
240 VPHAS J180518.5-241552.5 Or* 18 05 18.5377632559 -24 15 52.535451999           ~ 3 0
241 VPHAS J180520.8-243154.9 Or* 18 05 20.7639447552 -24 31 54.734462292           ~ 2 0
242 VPHAS J180521.8-243000.7 Or* 18 05 21.7526658624 -24 30 00.583902828           ~ 3 0
243 VPHAS J180523.9-242912.2 Or* 18 05 23.8699736496 -24 29 12.288433668           ~ 3 0
244 VPHAS J180526.8-242021.6 Or* 18 05 26.7794802504 -24 20 21.528372588           ~ 3 0
245 VPHAS J180526.8-243015.0 Or* 18 05 26.8251247807 -24 30 15.040289417           ~ 2 0
246 VPHAS J180530.0-243023.3 Or* 18 05 29.9567488488 -24 30 23.263184952           ~ 2 0
247 UCAC4 329-123053 Or* 18 05 30.3298502904 -24 15 58.662595188   15.632 14.679 14.316   ~ 3 0
248 M 16 OpC 18 18 45.1 -13 47 31           ~ 1084 1
249 Ass Cyg OB 2 As* 20 33.2 +41 19           ~ 1023 0
250 IC 1396 OpC 21 38 51.4 +57 31 52           ~ 523 1

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