2021ApJ...906...24D

Query : 2021ApJ...906...24D

2021ApJ...906...24D - Astrophys. J., 906, 24-24 (2021/January-1)

A VLBA survey of radio stars in the Orion Nebula Cluster. II. Astrometry.

DZIB S.A., FORBRICH J., REID M.J. and MENTEN K.M.

Abstract (from CDS):

From Very Long Baseline Array (VLBA) observations we previously identified a population of 123 young stellar systems with nonthermal radio emission toward the core of the Orion Nebula Cluster (ONC). We find optical sources in the Gaia DR2 catalog for 34 of them within 0.''2 of the radio positions. Most of the radio sources are likely companions of Gaia detections. However, there are 11 stars whose VLBA positions differ from Gaia by <1.6 mas, and some of these radio sources probably are the direct counterparts of the optical stars. We are able to obtain radio proper motions for 23 stars. Combining the stellar proper motions derived from the VLBA and Gaia DR2 data we find the global motion and velocity dispersion of the ONC to be (µα*, µδ) = (1.20 ± 0.09, 0.18 ± 0.09) mas yr–1 and (σµα_*,σµδ_) = (0.84 ± 0.09, 1.30 ± 0.09) mas yr–1. Finally, we looked for ordered motions by estimating the means of scalar and vectorial products, which results in =-0.61±1.00 km s–1 and =0.57±0.95 km s–1. These do not show indications that the young stellar cluster is in expansion, contraction, or rotation.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Star formation - Radio astrometry - Non-thermal radiation sources

VizieR on-line data: <Available at CDS (J/ApJ/906/24): table2.dat table3.dat>

Simbad objects: 147

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Number of rows : 147
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 ICRF J051728.1-052040 QSO 05 17 28.1103112464 -05 20 40.837981488           ~ 41 1
2 [VV2006] J052223.1-072513 Bla 05 22 23.1966340224 -07 25 13.479749292   17.37 16.50 16.25   ~ 28 1
3 ICRF J052953.5-051941 Bla 05 29 53.53350015 -05 19 41.6169258       19.40   ~ 50 2
4 ICRF J053207.5-030707 Bla 05 32 07.51932634 -03 07 07.0365011           ~ 31 1
5 COUP 38 X 05 34 47.97 -05 20 54.3           ~ 6 0
6 V* KM Ori Or* 05 34 55.9724775000 -05 23 13.041837816 14.142 12.883 11.918   10.064 K5Ve 108 0
7 NAME Orion Nebula Cluster OpC 05 35.0 -05 29           ~ 2514 0
8 JW 286 Or* 05 35 06.2822748576 -05 22 02.660967804   14.2 18.810   14.347 K5 58 0
9 [FRM2016] 11 Rad 05 35 06.42810 -05 24 21.2106           ~ 3 0
10 JW 300 Or* 05 35 07.2740312760 -05 22 26.548269852     17.876   14.043 M3: 53 0
11 2MASS J05350968-0523558 Y*O 05 35 09.6752680 -05 23 55.914015     24.50   18.207 ~ 28 0
12 V* V1326 Ori Or* 05 35 09.7681644000 -05 23 26.898475704 16.267 14.776 13.806   11.678 K8 70 0
13 2MASS J05350976-0521282 Or* 05 35 09.7707952200 -05 21 28.320259140   13.8 18.916   14.344 M0,K5-K7 51 1
14 2MASS J05350989-0523384 Or* 05 35 09.8993809032 -05 23 38.498524368     20.27   15.402 M7.25 28 0
15 [FRM2016] 25 Rad 05 35 10.02718 -05 21 22.1006           ~ 3 0
16 2MASS J05351026-0521571 Or* 05 35 10.2599977872 -05 21 57.158215128   13.9     15.171 M5.5 29 0
17 V* V1487 Ori A Or* 05 35 10.4918753664 -05 22 45.681747240   15.896 14.820   12.201 M0.5 55 0
18 V* V1487 Ori Or* 05 35 10.50600 -05 22 45.5412           M0.5+M2 57 0
19 MLLA 507 Y*O 05 35 10.61664 -05 22 55.9812           ~ 26 0
20 V* LQ Ori Or* 05 35 10.7315904000 -05 23 44.694430944 15.088 13.527 12.455   10.159 K8 77 1
21 MLLA 379 Y*? 05 35 10.95116 -05 23 26.6173           ~ 10 1
22 [FRM2016] 47 Rad 05 35 11.27574 -05 22 17.2670           ~ 3 0
23 2MASS J05351155-0524481 Y*? 05 35 11.557 -05 24 48.15           ~ 18 0
24 [FRM2016] 55 Rad 05 35 11.60228 -05 20 21.9419           ~ 3 0
25 COUP 444 Y*? 05 35 11.72782 -05 25 12.7569           ~ 13 0
26 COUP 450 TT* 05 35 11.8040700 -05 21 49.266135           K5V 63 0
27 [FRM2016] 70 Rad 05 35 11.98560 -05 20 32.2496           ~ 3 0
28 [FRM2016] 72 Rad 05 35 12.0828622632 -05 22 11.904798000           ~ 3 0
29 V* V2224 Ori Or* 05 35 12.1255111440 -05 24 33.776700084     15.19 14.66 15.940 M8.25 35 0
30 V* LV Ori TT* 05 35 12.5989281816 -05 23 44.110995828 14.669 13.863 12.912   11.015 K1V 64 0
31 [FRM2016] 86 Rad 05 35 12.6069013632 -05 21 45.311213448           ~ 3 0
32 COUP 504 Y*O 05 35 12.84705 -05 21 33.9755           ~ 12 0
33 COUP 510 X 05 35 12.98346 -05 23 54.9487           ~ 15 0
34 [FRM2016] 122 Rad 05 35 13.41612 -05 22 52.7685           ~ 3 0
35 Parenago 1820 Or* 05 35 13.5189425832 -05 22 19.552361160   13.1 16.160   13.254 M1.2 60 0
36 [FRM2016] 129 Rad 05 35 13.55569 -05 21 12.5325           ~ 3 0
37 2MASS J05351356-0523552 Y*O 05 35 13.56 -05 23 55.3           ~ 38 0
38 [FRM2016] 133 Rad 05 35 13.63367 -05 24 09.1621           ~ 4 0
39 [FRM2016] 135 Rad 05 35 13.6915083456 -05 21 48.866849316           ~ 3 0
40 [FRM2016] 137 Rad 05 35 13.71170 -05 25 08.4494           ~ 3 0
41 COUP 593 Y*O 05 35 13.9249648560 -05 23 20.155538292           ~ 27 0
42 [EC2006] MM14 Y*O 05 35 13.93039 -05 24 09.4197           ~ 15 0
43 COUP 594 * 05 35 13.97231 -05 24 09.8193           ~ 12 0
44 Parenago 1823 Or* 05 35 14.0513648544 -05 23 38.466784464     15.078   12.238 K5 53 0
45 COUP 598 X 05 35 14.07492 -05 20 12.5574           ~ 8 0
46 V* V2254 Ori Or* 05 35 14.11296 -05 22 22.7316           B 320 2
47 NAME Orion-KL SFR 05 35 14.16 -05 22 21.5           ~ 2421 1
48 COUP 608 X 05 35 14.18597 -05 26 20.8200           ~ 6 0
49 ALMA J053514.3070-052236.682 Rad 05 35 14.27553 -05 22 35.9393           ~ 4 0
50 [FRM2016] 176 Rad 05 35 14.31409 -05 21 17.8338           ~ 3 0
51 COUP 625 X 05 35 14.3352900 -05 23 17.395700           ~ 17 0
52 [FRM2016] 182 Rad 05 35 14.40372 -05 21 27.1653           ~ 3 0
53 ALMA J053514.5010-052238.674 Y*O 05 35 14.5013870 -05 22 38.696699           ~ 29 0
54 [FRM2016] 188 Rad 05 35 14.53419 -05 23 10.5434           ~ 3 0
55 COUP 640 X 05 35 14.54523 -05 23 15.9753           ~ 17 0
56 COUP 648 Or* 05 35 14.6556309840 -05 22 33.743501832   15.891 14.779   12.008 K7 61 0
57 2MASS J05351465-0520424 Or* 05 35 14.6565163944 -05 20 42.284563008   14.1 21.68   14.262 ~ 33 0
58 ALMA J053514.6621-052211.277 Y*O 05 35 14.665 -05 22 11.06           ~ 25 1
59 ** SMN 2A Y*O 05 35 14.7320 -05 22 29.823           ~ 22 0
60 [FRM2016] 205 Rad 05 35 14.76172 -05 21 54.0635           ~ 3 0
61 ALMA J053514.8988-052225.416 Y*O 05 35 14.8982780 -05 22 25.410079           ~ 41 0
62 V* V1330 Ori Or* 05 35 14.9155657944 -05 22 39.203240880   15.040 13.940   11.632 K4 78 0
63 2MASS J05351494-0523392 LM* 05 35 14.9489989176 -05 23 39.225767352   15.249 14.247   12.055 ~ 39 0
64 Parenago 1842 Or* 05 35 15.2608803288 -05 22 56.866892555 15.256 14.367 13.465   11.383 G6-G8 58 0
65 [FRM2016] 227 Rad 05 35 15.34788 -05 22 18.0953           ~ 3 0
66 [FRM2016] 230 Rad 05 35 15.36855 -05 22 33.3992           ~ 3 0
67 [FRM2016] 232 Rad 05 35 15.37753 -05 22 30.1165           ~ 3 0
68 TCC 32 Or* 05 35 15.5228426424 -05 23 37.385961360         13.821 ~ 54 1
69 V* V1501 Ori Or* 05 35 15.5533377312 -05 25 14.147311764   15.163 14.077   11.527 K4-M1 75 0
70 COUP 723 X 05 35 15.60361 -05 21 26.8917           ~ 9 0
71 V* V348 Ori Or* 05 35 15.6352887504 -05 22 56.458393068   14.352 13.274   10.987 G8-K1 79 0
72 COUP 734 Y*? 05 35 15.760 -05 23 38.38         15.184 ~ 23 0
73 * tet01 Ori E Or* 05 35 15.7721814864 -05 23 09.889316700           G2IV 104 0
74 NAME tet01 Ori A1 * 05 35 15.82020 -05 23 14.2891           ~ 11 0
75 NAME tet01 Ori A2 * 05 35 15.8217 -05 23 14.097           ~ 10 0
76 * tet01 Ori A Ae* 05 35 15.8254015008 -05 23 14.334699480 5.87 6.75 6.73 6.42 6.21 B0V 508 0
77 TCC 57 Y*O 05 35 16.07 -05 23 27.8           ~ 47 0
78 * tet01 Ori B EB* 05 35 16.1339860056 -05 23 06.784444248 7.71 8.20 7.96     B1V 380 1
79 V* V2284 Ori Or* 05 35 16.1925176712 -05 21 32.340541500   13.2 18.08   14.509 M3e 36 0
80 COUP 801 Or* 05 35 16.3757039592 -05 24 03.344873220     14.06     K4-K7 45 0
81 ALMA J053516.4186-052212.130 Y*O 05 35 16.4190 -05 22 12.216           ~ 17 0
82 * tet01 Ori C SB* 05 35 16.4662967280 -05 23 22.921811880 4.20 5.15 5.13 4.91 4.73 O7Vp 1479 1
83 NAME Ori Trapezium OpC 05 35 16.5 -05 23 14           ~ 1708 1
84 [FRM2016] 314 Rad 05 35 16.65312 -05 20 27.1120           ~ 3 0
85 * tet01 Ori F Y*? 05 35 16.7270624568 -05 23 25.197757584 9.928 10.075 10.122   9.652 B8 46 0
86 TCC 74 Y*O 05 35 16.76210 -05 23 28.0209           ~ 47 0
87 V* V1279 Ori Or* 05 35 16.7666721456 -05 24 04.257205308   14.815 13.722   11.441 M0.9e 58 0
88 COUP 841 Y*? 05 35 16.9324596816 -05 22 09.831006408         19.101 ~ 17 0
89 [FRM2016] 327 Rad 05 35 16.96329 -05 23 33.3581           ~ 3 0
90 V* MR Ori Or* 05 35 16.9783073496 -05 21 45.337307544 11.386 10.876 10.578   9.836 A2:Vv 67 0
91 COUP 856 Or* 05 35 17.0598222040 -05 23 39.756219790   12.9     13.224 K8e 64 1
92 MLLA 178 Y*? 05 35 17.12653 -05 24 34.3822           ~ 10 0
93 V* AE Ori Or* 05 35 17.2187787552 -05 21 31.713381828           K4-K7 58 0
94 HD 37024 Or* 05 35 17.3524325856 -05 22 35.734959444     16.29   13.91 K0.7 81 0
95 2MASS J05351740-0522039 Y*? 05 35 17.406 -05 22 03.90           ~ 19 0
96 COUP 896 Y*? 05 35 17.50534 -05 21 06.1892           ~ 12 0
97 COUP 897 Y*O 05 35 17.55393 -05 21 45.6020     19.21     ~ 19 1
98 JW 558 Y*O 05 35 17.6729925216 -05 23 40.866823068 16.251 15.348 15.343   14.390 M5.9e 83 0
99 MLLA 157 Or* 05 35 17.7349887072 -05 24 43.694500608     19.12   15.289 M6.5e 24 0
100 [FRM2016] 373 Rad 05 35 17.86356 -05 22 15.5343           ~ 3 0
101 V* MT Ori Or* 05 35 17.9482748184 -05 22 45.477710148 14.524 13.208 12.229   10.063 K2 110 0
102 2MASS J05351802-0522052 Or* 05 35 18.0273124536 -05 22 05.362247064     19.06   14.694 K0-K3 36 0
103 V* V2325 Ori Or* 05 35 18.2064680088 -05 23 35.904973236 16.366 14.920 13.923   11.431 K4 59 0
104 [FRM2016] 398 Rad 05 35 18.32178 -05 25 05.2571           ~ 3 0
105 V* V1229 Ori Or* 05 35 18.3705735744 -05 22 37.440079608 15.941 14.257 13.251   10.987 K0 92 0
106 2MASS J05351839-0520203 Or* 05 35 18.3897557112 -05 20 20.337561564   14.5     15.821 K8-M1.5,M1.5-M3,M3-M4 23 0
107 [FRM2016] 408 Rad 05 35 18.51886 -05 21 28.3480           ~ 3 0
108 V* MV Ori Or* 05 35 18.6726304944 -05 20 33.720896364 14.842 13.736 12.725   10.236 G1e 46 0
109 [FRM2016] 426 Rad 05 35 18.94932 -05 25 07.6808           ~ 3 0
110 Brun 633 Or* 05 35 19.1394733464 -05 20 38.745465468 13.390 12.971 12.523   11.138 A4-A7 44 0
111 2MASS J05351921-0522506 Or* 05 35 19.2125163120 -05 22 50.680668972     17.099   13.882 K5 49 0
112 [FRM2016] 440 Rad 05 35 19.47491 -05 22 58.8421           ~ 3 0
113 [FRM2016] 456 Rad 05 35 19.88099 -05 23 57.2292           ~ 3 0
114 V* V491 Ori Or* 05 35 20.0525646096 -05 21 05.959872648   16.647 15.421   12.533 K7 62 0
115 V* V1517 Ori Or* 05 35 20.1347093520 -05 21 33.623818920   17.191 15.830   12.816 K9 37 0
116 V* V1338 Ori TT* 05 35 20.1661841640 -05 26 39.121381752 15.869 14.434 13.479 12.76 11.443 K0 63 0
117 V* TU Ori Or* 05 35 20.2232691384 -05 20 56.947917084 15.217 13.736 12.664   10.037 G9 58 0
118 JW 644 Or* 05 35 20.2688829960 -05 25 04.075000968     17.06 13.57 15.980 ~ 45 0
119 2MASS J05352039-0522136 Or* 05 35 20.3977430736 -05 22 13.636281216   17.885 16.618   13.149 K 39 0
120 [FRM2016] 470 Rad 05 35 20.47689 -05 24 20.3192           ~ 3 0
121 2MASS J05352063-0522455 Or* 05 35 20.6380402608 -05 22 45.557958144   14.8 19.80   15.729 M1 37 0
122 V* V1230 Ori Or* 05 35 20.7204225144 -05 21 44.345341872 9.886 10.041 9.736 9.25 8.822 B1 97 0
123 V* V1399 Ori Or* 05 35 21.0488798160 -05 23 49.016892876 14.154 13.231 12.376   10.605 G8 72 0
124 2MASS J05352208-0524327 Or* 05 35 22.0908627312 -05 24 32.852975904     13.97 12.47 14.479 ~ 41 0
125 Brun 676 Or* 05 35 22.2635685264 -05 20 29.257010592 15.523 14.142 13.260   11.719 K3 56 0
126 V* V1231 Ori Or* 05 35 22.3254640296 -05 24 14.259610224     14.04 14.33   M1 47 1
127 [FRM2016] 509 Rad 05 35 22.35274 -05 25 02.3194           ~ 3 0
128 [FRM2016] 512 Rad 05 35 22.64322 -05 23 05.9911           ~ 3 0
129 JW 724 Or* 05 35 22.8347572320 -05 25 47.672494788   14.2     14.554 M5.5 20 0
130 * tet02 Ori A SB* 05 35 22.9012398264 -05 24 57.832632108 5.37 6.30 6.39 6.30 6.35 O9.5IVp 576 0
131 2MASS J05352349-0520016 Y*? 05 35 23.4950223816 -05 20 01.681801620         18.859 ~ 27 0
132 V* V1342 Ori Or* 05 35 23.5979023488 -05 25 26.508495648   13.9 17.759   14.585 M3-M3.5e 35 0
133 2MASS J05352365-0523463 Or* 05 35 23.6549404200 -05 23 46.327654032   12.9 13.95   14.491 M1 34 0
134 2MASS J05352398-0525098 Or* 05 35 23.9834690616 -05 25 09.927964020 16.121 17.448 17.537   15.144 M1 37 0
135 V* V2415 Ori Or* 05 35 24.0291523416 -05 23 13.854842772         17.089 ~ 28 0
136 V* V2421 Ori Or* 05 35 24.2576283816 -05 25 18.759432468 16.188 16.193 15.210   12.724 K2.5e 52 0
137 2MASS J05352445-0524010 Y*? 05 35 24.4702801560 -05 24 01.178977608   14.0     15.225 M1-M3: 35 0
138 [FRM2016] 534 Rad 05 35 24.82751 -05 21 01.0182           ~ 3 0
139 2MASS J05352502-0524383 Y*O 05 35 25.0318835952 -05 24 38.479139316         17.342 M7 22 0
140 Brun 685 Or* 05 35 25.0873105224 -05 23 46.747961196   15.325 14.296   12.164 ~ 54 0
141 * tet02 Ori B Y*O 05 35 26.4007537560 -05 25 00.793767576 5.36 6.29 6.38 6.29 11.050 B0.7V 206 0
142 COUP 1428 X 05 35 29.60 -05 23 12.0           ~ 7 0
143 * tet02 Ori C Or* 05 35 31.4311124640 -05 25 16.371705000   7.80 8.24     B4V 136 1
144 PMN J0540-0514 rG 05 39 59.9373092016 -05 14 41.300066796           ~ 20 1
145 QSO B0539-057 Bla 05 41 38.08336552 -05 41 49.4283917     20.4 20.70   ~ 279 1
146 PMN J0545-0539 rG 05 45 23.3585321251 -05 39 37.837241408           ~ 6 1
147 NGC 2110 Sy2 05 52 11.3768668776 -07 27 22.507465392   14.77 13.51 11.86   ~ 712 1

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