1997A&AS..123...63V

Query : 1997A&AS..123...63V

1997A&AS..123...63V - Astron. Astrophys., Suppl. Ser., 123, 63-82 (1997/May-2)

A multiwavelength study of star formation in the very young open cluster NGC 6530.

VAN DEN ANCKER M.E., THE P.S., FEINSTEIN A., VAZQUEZ R.A., DE WINTER D. and PEREZ M.R.

Abstract (from CDS):

The distance and formation history of the very young open cluster NGC 6530 were investigated by studying a total of 132 probable member stars of this open cluster. It was concluded that the distance to NGC 6530 is 1.8±0.2kpc, and its interstellar reddening E(B-V) is 0.30mag. Furthermore, we conclude that the extinction law of the intracluster material is normal (i.e. RV=3.1), but anomalous extinction laws were found for several more embedded stars in the cluster. Of the 132 stars included in this study, 11 are suspected to be variable, five show Hα in emission and nine show an infrared excess. Among the member stars of NGC 6530, three were found to be part of the Herbig Ae/Be stellar class, whereas two others are possible members of this stellar group as well. Also, one cluster member is probably a new massive post-AGB star, whereas the same could possibly apply to another member star. Finally, from the distribution of post- and pre-main sequence stars in the cluster's HR-diagram, it was concluded that the process of star formation in NGC 6530 must have started a few times 107 years ago and, for the less massive stars, is probably still going on today.

Abstract Copyright: ∼

Journal keyword(s): circumstellar matter - stars: formation - stars: pre-main sequence - dust, extinction - H II regions - open clusters and associations: individual: NGC 6530

VizieR on-line data: <Available at CDS (J/A+AS/123/63): table1 table2 table5>

Simbad objects: 141

goto Full paper

goto View the references in ADS

Number of rows : 141
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 Sgr I Window reg 17 56 -29.0           ~ 71 0
2 Cl* NGC 6530 VAJ 1 * 18 02 21.5235151944 -24 15 00.501145704     13.07     ~ 4 0
3 Cl* NGC 6530 VAJ 2 * 18 02 22.9038759120 -24 25 39.049746708     13.15     ~ 4 0
4 CD-24 13785 Y*O 18 02 39.7778217240 -24 14 47.555444796 7.92 9.27 9.13 9.45   OB 27 0
5 M 20 OpC 18 02 42 -22 58.3           ~ 456 1
6 NGC 6530 212 Y*O 18 02 42.6888666432 -24 17 23.587289196   13.28 12.72 12.53   ~ 7 0
7 NGC 6530 211 Y*O 18 02 43.0289986992 -24 18 11.275303284   12.63 12.43     ~ 9 0
8 NGC 6530 210 * 18 02 46.9815316128 -24 20 30.322407552   12.51 12.28     ~ 11 0
9 NGC 6530 300 Y*O 18 02 48.2031284160 -24 14 40.437480300   14.52 13.52     ~ 4 0
10 V* V5098 Sgr Or* 18 02 50.8918954776 -24 16 17.182487568   13.80 13.12 13.28   ~ 8 0
11 Cl* NGC 6530 SJ 5 * 18 02 51.8279408736 -24 37 31.895862672   13.04 12.65     ~ 6 0
12 Cl* NGC 6530 VAJ 53 Y*O 18 02 53.7245283048 -24 09 45.629039448 12.52 12.442 11.352 10.960   ~ 16 0
13 Cl* NGC 6530 VAJ 55 * 18 02 54.7221805656 -24 37 41.057146560     13.28     ~ 4 0
14 Cl* NGC 6530 SJ 7 Y*O 18 03 05.61480 -24 07 39.0972   13.93 13.49     ~ 5 0
15 NGC 6530 219 Y*O 18 03 06.3960084960 -24 15 42.689671164   13.01 12.36     ~ 8 0
16 NGC 6530 200 Y*O 18 03 06.9595086216 -24 24 38.991146256   13.11 12.82     ~ 11 0
17 NGC 6523 Cl* 18 03.2 -24 23           ~ 187 1
18 Cl* NGC 6530 SJ 10 * 18 03 13.9391617224 -24 07 28.061395752   13.98 12.66     ~ 4 0
19 NGC 6530 282 Y*O 18 03 25.27 -24 09 38.2   14.43 13.49     ~ 6 0
20 NGC 6530 181 Y*O 18 03 25.9689014520 -24 22 34.863615660   13.20 12.66     ~ 16 0
21 NGC 6530 244 * 18 03 26.1553288056 -24 13 32.215893312   13.33 12.05     ~ 8 0
22 Cl* NGC 6530 SJ 13 Y*O 18 03 26.3233999968 -24 06 26.207452476   12.02 11.70     ~ 8 0
23 NGC 6530 241 Y*O 18 03 26.7199475952 -24 12 45.655030476   12.10 11.86   11.38 ~ 12 0
24 NGC 6530 178 * 18 03 28.5814954752 -24 23 02.828539896   12.18 10.94     K4III 10 0
25 Cl* NGC 6530 SJ 16 * 18 03 31.6193987376 -24 36 35.180570484   13.14 11.89     ~ 6 0
26 M 8 OpC 18 03 37 -24 23.2           ~ 644 1
27 CD-24 13810 Y*O 18 03 45.0958464864 -24 22 05.325003732 9.67 10.180 10.054 10.169 9.54 B1.5V(n) 33 0
28 NGC 6530 172 Y*O 18 03 50.6224962240 -24 21 00.187384104 12.986 12.496 12.240   11.870 ~ 18 0
29 EM* LkHA 108 Or* 18 03 50.7590261472 -24 21 10.836157104 12.541 12.137 11.714   11.003 ~ 25 0
30 NGC 6530 123 * 18 03 53.47 -24 31 40.8 14.44 14.572 13.544   12.077 ~ 8 0
31 NGC 6530 168 Y*O 18 03 54.2920887744 -24 23 04.914180564   12.433 12.181   11.832 ~ 15 0
32 HD 164816 Be* 18 03 56.8425865728 -24 18 45.118050552 6.17 7.006 6.986 8.08 6.989 O9.5V+B0V 162 0
33 NGC 6530 13 Or* 18 04 00.1647811943 -24 15 02.832294556   13.779 13.343   12.805 ~ 15 0
34 NGC 6530 15 Y*O 18 04 01.2551734800 -24 23 47.401378584   11.75 11.58     B7V 16 0
35 NGC 6530 14 Y*O 18 04 01.2831360288 -24 26 29.265491580 11.974 11.646 11.446   11.157 B5.5V 23 0
36 NGC 6530 16 Y*O 18 04 02.6853582323 -24 10 55.073591388   12.403 12.151   11.812 ~ 15 0
37 NGC 6530 121 Y*O 18 04 04.1760090120 -24 28 32.074209876 14.13 14.454 13.745   12.844 ~ 15 0
38 NGC 6530 17 Y*O 18 04 04.3106114712 -24 21 30.469104324 12.505 12.155 11.946   11.698 A5-F4V 25 0
39 NGC 6530 260 Y*O 18 04 07.5077472648 -24 22 28.446146616 15.182 14.207 13.282   12.127 ~ 18 0
40 NGC 6530 163 * 18 04 07.8462641217 -24 12 44.036569704   12.934 12.674   12.311 ~ 12 0
41 CPD-24 6151 Y*O 18 04 09.2379178752 -24 15 43.166747088   11.545 11.406   11.199 F5 14 0
42 NGC 6530 26 Y*O 18 04 09.8075962032 -24 20 08.987478864 12.229 11.879 11.621   11.170 A0 19 0
43 NGC 6530 24 Y*O 18 04 10.0855882752 -24 24 11.337626520   12.13 11.95 12.01 11.541 B9 16 0
44 M 21 OpC 18 04 10.1 -22 30 00           ~ 157 0
45 NGC 6530 27 Y*O 18 04 10.2573681048 -24 20 52.390222584 14.334 13.510 12.842   12.011 F4I 20 0
46 CPD-24 6152 Y*O 18 04 11.1598510296 -24 21 45.175823136   10.497 10.374   10.140 B2V 30 0
47 NGC 6530 29 Or* 18 04 11.2114383960 -24 24 47.756631276 13.76 14.12 13.25 12.92 11.83 F? 19 0
48 NGC 6530 33 Y*O 18 04 11.2916730936 -24 16 23.863898244   14.162 13.331   12.129 ~ 12 0
49 NGC 6530 31 Y*O 18 04 11.5832911608 -24 25 29.948671200 12.363 11.967 11.706   11.229 A0 24 0
50 NGC 6530 38 Or* 18 04 13.8677135232 -24 13 28.116294384   12.659 12.155   11.492 A2 29 0
51 HD 315026 Y*O 18 04 14.5189421200 -24 14 36.851688090 8.48 9.342 9.208 9.762   B0V 31 0
52 HD 315032 Be* 18 04 15.0268429224 -24 23 27.713497344 9.170 9.164 9.122 9.71 9.039 B0IV 77 0
53 NGC 6530 47 Y*O 18 04 15.7321154184 -24 14 55.385013048 13.179 12.545 12.277   11.854 ~ 21 0
54 CPD-24 6159 * 18 04 16.5692775960 -24 17 16.562686488   11.237 11.086   10.849 F8 15 0
55 NGC 6530 46 Y*O 18 04 16.7820489432 -24 28 37.091010468 12.277 11.803 11.580   11.102 A0 19 0
56 NGC 6530 52 Y*O 18 04 19.5306961272 -24 14 35.360636928   12.420 12.114   11.666 A0 19 0
57 Cl* NGC 6530 VAJ 170 * 18 04 19.5524708880 -24 35 09.442999392   13.58 13.02     A0 5 0
58 NGC 6530 126 Y*O 18 04 19.9548109920 -24 30 01.631134260   13.005 11.703   10.265 K0III 9 0
59 NGC 6530 53 Or* 18 04 20.5589569920 -24 24 55.498199580 14.562 13.649 13.050   12.127 F7-F9III 28 0
60 CD-24 13829 Y*O 18 04 21.2734315416 -24 21 18.110381292 8.47 9.476 9.453 9.651   B1.5Vne 51 1
61 NGC 6530 54 Y*O 18 04 21.3472105320 -24 23 35.534480460 12.485 11.857 11.572   11.093 F2-F5III 23 0
62 CD-24 13830 Ae* 18 04 22.7421765936 -24 22 09.724518840 9.41 10.183 10.016 10.11 9.624 B2Ve 50 0
63 Cl* NGC 6530 SJ 46 * 18 04 23.0847396288 -24 36 17.933949324   12.93 12.51     ~ 7 0
64 HD 315033 Y*O 18 04 23.2279355376 -24 26 16.720588140 8.42 9.02 8.90     B1V 55 0
65 NGC 6530 316 Y*O 18 04 23.5522010832 -24 21 16.749829332   13.742 12.660   11.309 G8-K0IV-V 17 0
66 CPD-24 6164 Y*O 18 04 23.9941418688 -24 21 26.706008844 9.13 9.890 9.740 9.98   B1Ve 41 0
67 NGC 6530 61 Y*O 18 04 24.2929429728 -24 20 59.495770896 9.8 10.424 10.282   10.028 B1V 30 0
68 NGC 6530 291 Y*O 18 04 24.7926716496 -24 09 18.088888968   14.554 13.136   11.339 G8III 7 0
69 NGC 6530 263 Y*O 18 04 25.0200119664 -24 27 45.250495812   11.712 11.468   10.991 B5 17 0
70 NGC 6530 64 Y*O 18 04 25.2767690832 -24 22 41.849706396 12.286 11.904 11.674   11.214 G5-G9V 20 0
71 CD-24 13831 Y*O 18 04 25.5554033664 -24 20 44.860145748 9.66 10.29 10.17     B1V 38 0
72 NGC 6530 67 Y*O 18 04 25.7230719336 -24 19 49.595224260 13.133 12.342 11.993 12.02 11.468 A5-F2III-IV 21 0
73 NGC 6530 160 Y*O 18 04 26.7357723768 -24 23 51.680947272 13.762 13.073 12.718   12.120 A5-A9V 21 0
74 CPD-24 6170 Y*O 18 04 27.2046934608 -24 22 49.636762212 10.07 10.67 10.54 10.61 10.179 B2V 28 0
75 NGC 6530 71 Y*O 18 04 27.2862490368 -24 19 45.684100092 15.063 14.195 13.354   12.290 G0-G2IV 19 0
76 HD 315031 Y*O 18 04 28.0254107904 -24 21 42.788444328 7.68 9.170 9.090 9.16   B0.5IV/V+B1V 63 0
77 NGC 6530 77 Y*O 18 04 28.8668442576 -24 14 02.534069328 13.501 12.478 12.009   11.308 ~ 23 0
78 NGC 6530 74 Y*O 18 04 28.9891584504 -24 25 26.121604116 10.891 10.817 10.695   10.422 B2-B5 30 0
79 Cl* NGC 6530 VAJ 205 Y*O 18 04 29.2042140216 -24 06 13.446985968   13.78 13.13     ~ 4 0
80 HD 315024 Y*O 18 04 29.2696805472 -24 19 25.110290784 8.9 9.77 9.68 9.92   B0IV 44 0
81 NGC 6530 151 Y*O 18 04 29.3757139680 -24 09 34.914392100   12.986 12.153   10.888 A9 17 0
82 NGC 6530 OpC 18 04 31 -24 21.5           ~ 443 0
83 NGC 6530 131 Y*O 18 04 31.2955618251 -24 32 20.436203139   13.460 13.049   12.605 B4 12 0
84 CPD-24 6176 Y*O 18 04 32.9189018640 -24 18 44.497260936 10 10.61 10.454 10.61 10.245 B2.5Vne 38 0
85 CD-24 13837 Y*O 18 04 32.9906237448 -24 23 12.478728588 8.74 9.630 9.610 9.82   B1V 43 0
86 NGC 6530 81 Y*O 18 04 33.0515693016 -24 22 52.949310888   11.937 11.754   11.391 A0-A5V 24 0
87 NGC 6530 82 Y*O 18 04 33.1089996312 -24 21 15.421576428 13.213 12.696 12.380   11.838 F4-F5IV-V 21 0
88 V* V5563 Sgr Y*O 18 04 34.2049522080 -24 22 00.550706448 9.38 9.93 9.8     B2V 38 0
89 NGC 6530 84 Y*O 18 04 34.4096422824 -24 28 05.612096640 12.452 12.176 11.920   11.463 A0 23 0
90 HD 315021 Y*O 18 04 35.9943009216 -24 19 52.030225308 8.892 8.553 8.509 9.41 8.397 B0V 69 0
91 NGC 6530 94 Y*O 18 04 37.6619562816 -24 21 11.690007264   12.962 12.687   12.256 A 15 0
92 NGC 6530 97 Y*O 18 04 38.9657145072 -24 19 25.642621380   11.553 11.408   11.071 B9 20 0
93 NGC 6530 96 Y*O 18 04 39.0275848848 -24 22 57.516517452   12.417 12.186 12.25 11.803 ~ 16 0
94 CD-24 13844 Y*O 18 04 39.9049325736 -24 22 44.654595924 10.4 11.00 10.92 10.90 10.559 B7 27 0
95 HD 164947 Be* 18 04 41.65848 -24 20 56.9508 8.20         B2VI 47 0
96 HD 315022 Y*O 18 04 42.79 -24 18 33.9   10.69 10.53     A3 19 0
97 NGC 6530 134 Y*O 18 04 45.9130691520 -24 27 19.252627164   13.924 13.044   11.876 G0 19 0
98 NGC 6530 111 Or* 18 04 47.4380796168 -24 18 01.417340232   12.968 12.640   12.122 K7.5-M0.5V 22 0
99 NGC 6530 110 Y*O 18 04 47.7868368648 -24 28 24.146578092   11.465 11.221   10.834 B5 18 0
100 NGC 6530 314 Y*O 18 04 48.6125951496 -24 26 35.476208772 16.198 14.909 13.655   12.012 B2.5 14 0
101 NGC 6530 145 * 18 04 49.1549512896 -24 13 07.827638160   14.252 13.512   12.647 ~ 10 0
102 EM* LkHA 115 Ae* 18 04 50.5999226472 -24 25 42.095461620   12.380 11.949   11.198 B7e 39 0
103 HD 315020 Y*O 18 04 52.7152113912 -24 17 52.604336616   11.62 11.29     A3 15 0
104 NGC 6530 158 Y*O 18 04 53.0726060448 -24 19 28.072352496   11.747 11.502   11.100 ~ 11 0
105 HD 315034 Y*O 18 04 56.2550333520 -24 24 03.628435716   11.984 11.712   11.250 B5 22 0
106 HD 315035 Y*O 18 04 59.0214440664 -24 27 23.301208908   11.106 10.805   10.298 A2 29 0
107 NGC 6530 140 Y*O 18 05 01.7092706424 -24 18 38.678969052   13.613 13.221   12.724 ~ 13 0
108 CD-24 13858 Y*O 18 05 02.2828604760 -24 17 01.905384660   12.157 11.61   11.085 ~ 12 0
109 NGC 6530 139 Y*O 18 05 04.1866100976 -24 25 09.570530928   13.712 12.384   10.910 K3III 8 0
110 CD-24 13862 Y*O 18 05 08.2847254008 -24 15 33.066465624   12.001 11.711   11.293 ~ 13 0
111 Cl* NGC 6530 SJ 84 Y*O 18 05 10.2913933056 -24 32 09.150395172   13.21 12.50     F4 5 0
112 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
113 Cl* NGC 6530 VAJ 272 Y*O 18 05 11.3281964088 -24 24 37.380313188   13.5 13.10     ~ 9 0
114 Cl* NGC 6530 SJ 85 * 18 05 13.836 -24 06 01.92   13.41 13.02     A0 6 0
115 Cl* NGC 6530 SJ 86 Y*O 18 05 23.2790186016 -24 20 04.302675060   13.77 13.10     F1 11 0
116 Cl* NGC 6530 VAJ 286 Y*O 18 05 29.94048 -24 10 55.4160 14.13 14.16 13.39     B2 8 0
117 Cl* NGC 6530 SJ 87 * 18 05 39.2287138097 -24 07 52.207350212   13.96 13.31     B6 6 0
118 Cl* NGC 6530 SJ 88 * 18 05 43.3854224208 -24 29 10.721915088   13.01 12.58     A8 6 0
119 Cl* NGC 6530 SJ 89 * 18 05 52.5683500344 -24 33 44.906425992   13.24 11.91     K2III 6 0
120 Cl* NGC 6530 MMU 337 * 18 05 54.4029427104 -24 14 58.211182464   12.21 9.92     K7III 12 0
121 Cl* NGC 6530 SJ 91 * 18 05 54.8 -24 13 52   14.73 13.33     G2III 5 0
122 Cl* NGC 6530 SJ 92 * 18 05 58.2940069872 -24 25 41.491535592   12.46 11.70     A8 8 0
123 Cl* NGC 6530 SJ 93 * 18 06 01.3 -24 14 38   13.82 13.10     G0 4 0
124 Cl* NGC 6530 VAJ 316 * 18 06 01.5 -24 17 47     13.55     ~ 2 0
125 Cl* NGC 6530 SJ 94 * 18 06 01.6362924528 -24 13 36.265172772   12.72 11.94     G0 6 0
126 Cl* NGC 6530 VAJ 329 * 18 06 11.431 -24 23 52.15   12.71 12.18     F7 5 0
127 Cl* NGC 6530 VAJ 331 * 18 06 11.657 -24 19 20.77   13.43 12.77     F0 5 0
128 HD 315147 * 18 06 11.8381642320 -24 31 02.274303144 11.73 11.44 10.93 10.53   F8 22 0
129 Cl* NGC 6530 SJ 96 V* 18 06 11.97 -24 20 20.1   14.10 13.47     B9.5 5 0
130 Cl* NGC 6530 SJ 97 * 18 06 17.6747350080 -24 22 38.119147284   13.69 13.13     A8 6 0
131 Cl* NGC 6530 VAJ 337 * 18 06 17.9 -24 15 57   14.07 13.26     B5.5 3 0
132 Cl* NGC 6530 MMU 348 * 18 06 19.6765771704 -24 10 18.943818312   12.58 10.26     K7III-IV 15 0
133 Cl* NGC 6530 VAJ 342 * 18 06 22.6896440304 -24 28 10.534375812   12.96 11.84     K0III 8 0
134 Cl* NGC 6530 VAJ 347 * 18 06 26.0986249824 -24 20 41.908887348   13.35 12.77     B7 3 0
135 Cl* NGC 6530 SJ 99 * 18 06 31.3 -24 33 50   12.48 12.02     ~ 3 0
136 NGC 6530 239 * 18 06 33.4 -24 12 59   14.44 13.72     ~ 4 0
137 Cl* NGC 6530 SJ 100 * 18 06 39.6305475888 -24 37 56.974012716   12.84 12.10     F0 4 0
138 Cl* NGC 6530 SJ 101 * 18 06 40.4326239432 -24 34 23.959933284   13.28 12.84     ~ 3 0
139 M 16 OpC 18 18 45.1 -13 47 31           ~ 1084 1
140 M 18 OpC 18 19 56.2 -17 04 21           ~ 93 0
141 NGC 6618 OpC 18 20 47 -16 10.3           ~ 1700 0

To bookmark this query, right click on this link: simbad:objects in 1997A&AS..123...63V and select 'bookmark this link' or equivalent in the popup menu