2024RNAAS...8..149P

Query : 2024RNAAS...8..149P

2024RNAAS...8..149P - Research Notes of the AAS, 8, 149 (2024/June-0)

Gaia DR3 Data of Very Young Open Cluster NGC 6530: Distance and Evolutionary Stage of Selected Stars.

PARTHASARATHY M.

Abstract (from CDS):

Gaia EDR3 and Gaia DR3 data of selected stars in the very young (1.5 million years old) open cluster NGC 6530 are presented. All the selected stars have very accurate Gaia DR3 distances. Most of the selected stars are very young B stars and several of them are young stellar objects. From the analysis of selected stars, the distance to NGC 6530 is found to be 1318 pc. The two very red stars VAJ 304 and 338 have little bit less proper motion than other members of the NGC 6530 and their Mv values are found to be -3.57 and -3.68 respectively. They are much brighter than K5 III RGB stars and less luminous than massive K5 red supergiants. It is likely VAJ 304 and VAJ 338 are not members of NGC 6530 they may be field K5 type AGB or post-AGB stars. Further study of these two stars is needed.

Abstract Copyright: © 2024. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Open star clusters

Simbad objects: 46

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Number of rows : 46
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 6530 211 Y*O 18 02 43.0289986992 -24 18 11.275303284   12.63 12.43     ~ 9 0
2 NGC 6530 210 * 18 02 46.9815316128 -24 20 30.322407552   12.51 12.28     ~ 11 0
3 Cl* NGC 6530 SJ 13 Y*O 18 03 26.3233999968 -24 06 26.207452476   12.02 11.70     ~ 8 0
4 NGC 6530 241 Y*O 18 03 26.7199475952 -24 12 45.655030476   12.10 11.86   11.38 ~ 12 0
5 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
6 NGC 6530 172 Y*O 18 03 50.6224962240 -24 21 00.187384104 12.986 12.496 12.240   11.870 ~ 18 0
7 EM* LkHA 108 Or* 18 03 50.7590261472 -24 21 10.836157104 12.541 12.137 11.714   11.003 ~ 25 0
8 NGC 6530 168 Y*O 18 03 54.2920887744 -24 23 04.914180564   12.433 12.181   11.832 ~ 15 0
9 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
10 NGC 6530 163 * 18 04 07.8462641217 -24 12 44.036569704   12.934 12.674   12.311 ~ 12 0
11 CPD-24 6151 Y*O 18 04 09.2379178752 -24 15 43.166747088   11.545 11.406   11.199 F5 14 0
12 NGC 6530 26 Y*O 18 04 09.8075962032 -24 20 08.987478864 12.229 11.879 11.621   11.170 A0 19 0
13 NGC 6530 24 Y*O 18 04 10.0855882752 -24 24 11.337626520   12.13 11.95 12.01 11.541 B9 16 0
14 CPD-24 6152 Y*O 18 04 11.1598510296 -24 21 45.175823136   10.497 10.374   10.140 B2V 30 0
15 NGC 6530 38 Or* 18 04 13.8677135232 -24 13 28.116294384   12.659 12.155   11.492 A2 29 0
16 HD 315032 Be* 18 04 15.0268429224 -24 23 27.713497344 9.170 9.164 9.122 9.71 9.039 B0IV 77 0
17 NGC 6530 47 Y*O 18 04 15.7321154184 -24 14 55.385013048 13.179 12.545 12.277   11.854 ~ 21 0
18 NGC 6530 46 Y*O 18 04 16.7820489432 -24 28 37.091010468 12.277 11.803 11.580   11.102 A0 19 0
19 NGC 6530 52 Y*O 18 04 19.5306961272 -24 14 35.360636928   12.420 12.114   11.666 A0 19 0
20 NGC 6530 53 Or* 18 04 20.5589569920 -24 24 55.498199580 14.562 13.649 13.050   12.127 F7-F9III 28 0
21 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
22 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
23 Cl* NGC 6530 SJ 46 * 18 04 23.0847396288 -24 36 17.933949324   12.93 12.51     ~ 7 0
24 HD 315033 Y*O 18 04 23.2279355376 -24 26 16.720588140 8.42 9.02 8.90     B1V 55 0
25 CPD-24 6164 Y*O 18 04 23.9941418688 -24 21 26.706008844 9.13 9.890 9.740 9.98   B1Ve 41 0
26 NGC 6530 263 Y*O 18 04 25.0200119664 -24 27 45.250495812   11.712 11.468   10.991 B5 17 0
27 CD-24 13831 Y*O 18 04 25.5554033664 -24 20 44.860145748 9.66 10.29 10.17     B1V 38 0
28 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
29 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
30 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
31 NGC 6530 77 Y*O 18 04 28.8668442576 -24 14 02.534069328 13.501 12.478 12.009   11.308 ~ 23 0
32 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
33 HD 315024 Y*O 18 04 29.2696805472 -24 19 25.110290784 8.9 9.77 9.68 9.92   B0IV 44 0
34 NGC 6530 OpC 18 04 31 -24 21.5           ~ 443 0
35 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
36 NGC 6530 84 Y*O 18 04 34.4096422824 -24 28 05.612096640 12.452 12.176 11.920   11.463 A0 23 0
37 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
38 NGC 6530 97 Y*O 18 04 38.9657145072 -24 19 25.642621380   11.553 11.408   11.071 B9 20 0
39 NGC 6530 110 Y*O 18 04 47.7868368648 -24 28 24.146578092   11.465 11.221   10.834 B5 18 0
40 EM* LkHA 115 Ae* 18 04 50.5999226472 -24 25 42.095461620   12.380 11.949   11.198 B7e 39 0
41 NGC 6530 158 Y*O 18 04 53.0726060448 -24 19 28.072352496   11.747 11.502   11.100 ~ 11 0
42 HD 315034 Y*O 18 04 56.2550333520 -24 24 03.628435716   11.984 11.712   11.250 B5 22 0
43 HD 315035 Y*O 18 04 59.0214440664 -24 27 23.301208908   11.106 10.805   10.298 A2 29 0
44 CD-24 13862 Y*O 18 05 08.2847254008 -24 15 33.066465624   12.001 11.711   11.293 ~ 13 0
45 Cl* NGC 6530 MMU 337 * 18 05 54.4029427104 -24 14 58.211182464   12.21 9.92     K7III 12 0
46 Cl* NGC 6530 MMU 348 * 18 06 19.6765771704 -24 10 18.943818312   12.58 10.26     K7III-IV 15 0

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