2020A&A...643A.148G

Query : 2020A&A...643A.148G

2020A&A...643A.148G - Astronomy and Astrophysics, volume 643A148-148 (2020/11-1)

Lupus DANCe. Census of stars and 6D structure with Gaia-DR2 data.

GALLI P.A.B., BOUY H., OLIVARES J., MIRET-ROIG N., VIEIRA R.G., SARRO L.M., BARRADO D., BERIHUETE A., BERTOUT C., BERTIN E. and CUILLANDRE J.-C.

Abstract (from CDS):


Context. Lupus is recognised as one of the closest star-forming regions, but the lack of trigonometric parallaxes in the pre-Gaia era hampered many studies on the kinematic properties of this region and led to incomplete censuses of its stellar population.
Aims. We use the second data release of the Gaia space mission combined with published ancillary radial velocity data to revise the census of stars and investigate the 6D structure of the Lupus complex.
Methods. We performed a new membership analysis of the Lupus association based on astrometric and photometric data over a field of 160deg2 around the main molecular clouds of the complex and compared the properties of the various subgroups in this region.
Results. We identified 137 high-probability members of the Lupus association of young stars, including 47 stars that had never been reported as members before. Many of the historically known stars associated with the Lupus region identified in previous studies are more likely to be field stars or members of the adjacent Scorpius-Centaurus association. Our new sample of members covers the magnitude and mass range from G≃8 to G≃18mag and from 0.03 to 2.4M☉, respectively. We compared the kinematic properties of the stars projected towards the molecular clouds Lupus 1-6 and showed that these subgroups are located at roughly the same distance (about 160pc) and move with the same spatial velocity. Our age estimates inferred from stellar models show that the Lupus subgroups are coeval (with median ages ranging from about 1 to 3Myr). The Lupus association appears to be younger than the population of young stars in the Corona-Australis star-forming region recently investigated by our team using a similar methodology. The initial mass function of the Lupus association inferred from the distribution of spectral types shows little variation compared to other star-forming regions.
Conclusions. In this paper, we provide an updated sample of cluster members based on Gaia data and construct the most complete picture of the 3D structure and 3D space motion of the Lupus complex.

Abstract Copyright: © P. A. B. Galli et al. 2020

Journal keyword(s): open clusters and associations: individual: Lupus - stars: formation - stars: distances - methods: statistical - parallaxes - proper motions

VizieR on-line data: <Available at CDS (J/A+A/643/A148): tablea1.dat tablea2.dat tablea3.dat tablea4.dat>

Simbad objects: 154

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Number of rows : 154
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 Taurus Complex SFR 04 41.0 +25 52           ~ 4971 0
2 NAME LMC G 05 23 34.6 -69 45 22     0.4     ~ 19090 0
3 NAME Cha 1 MoC 11 06 48 -77 18.0           ~ 1266 1
4 NAME Upper Centaurus Lupus MGr 15 24 -41.9           ~ 567 1
5 Sz 65 Or* 15 39 27.7716659160 -34 46 17.211087984   13.11 12.13 11.33 10.76 K7 118 0
6 Lupus 1 Cld 15 43 02.1 -34 09 06           ~ 320 0
7 2MASS J15440096-3531056 Y*O 15 44 00.9579213299 -35 31 05.712239147           ~ 6 0
8 CD-33 10685 Or* 15 45 12.8678037432 -34 17 30.644403036 12.47 11.56 10.224 9.60 8.685 K3Ve 306 1
9 Sz 70 Or* 15 46 42.9900610584 -34 30 11.542672224   18.033 16.31     M5 14 0
10 UCAC4 245-087110 Y*O 15 47 11.5947699432 -41 01 18.134965920   15.941 14.440 14.461   ~ 4 0
11 UCAC4 274-081081 Y*O 15 48 06.2572133760 -35 15 48.150290052       15.727   ~ 5 0
12 Sz 76 TT* 15 49 30.7355449512 -35 49 51.413284020   16.611 15.095 14.710   M3.2 58 0
13 Gaia DR2 5995437246144906496 Y*O 15 51 31.6863888483 -43 02 04.452058527           ~ 1 0
14 Sz 77 TT* 15 51 46.9580885472 -35 56 44.112678504   12.0       K5.5 86 0
15 2MASS J15551027-3455045 LM* 15 55 10.2762808824 -34 55 04.670530572           M7.5 6 0
16 NAME THA 15-10A Or* 15 55 50.2814014152 -38 01 33.699111168           M4.5 18 0
17 NAME THA 15-10B Y*O 15 55 50.3362340280 -38 01 31.864857996           M5.5 10 0
18 WRAY 15-1384 TT* 15 56 02.0994258408 -36 55 28.274506140 14.91 14.342 13.470 13.311 11.86 M1 56 0
19 THA 15-12 Or* 15 56 09.2066646912 -37 56 06.126118692   13.12 11.93 11.45   M0e 554 0
20 2MASS J15563773-4242445 Y*O 15 56 37.7331252176 -42 42 44.590238512           ~ 5 0
21 2MASS J15563812-4235571 Y*O 15 56 38.1284153304 -42 35 57.181621560           ~ 4 0
22 V* RU Lup TT* 15 56 42.3108692112 -37 49 15.473946900 9.27 10.07 9.60     K7/M0e 528 0
23 2MASS J15564421-4242244 Y*O 15 56 44.2143327528 -42 42 24.495969960           ~ 5 0
24 Lupus 2 MoC 15 57 08 -37 47.1           ~ 119 1
25 WRAY 15-1388 TT* 15 57 24.0102960624 -42 40 04.569017736   15.290 13.973 13.626   K7/M0 24 0
26 Sz 127 Or* 15 57 30.3407870926 -42 10 32.444768724   16.12 14.81 14.96   M5e 13 0
27 1RXS J155744.8-414353 Y*O 15 57 43.6205898312 -41 43 37.830081324   14.02 12.65 12.25   K6IVe 9 0
28 UCAC4 242-091716 Y*O 15 57 52.3988177222 -41 43 51.443206240   16.740 15.145 14.860   ~ 3 0
29 UCAC4 240-091857 Y*O 15 57 58.2799553208 -42 09 12.880037052       15.023   ~ 5 0
30 Sz 84 TT* 15 58 02.5198436808 -37 36 02.729938536   14.3       M5.0e 85 0
31 UCAC4 278-085821 Y*O 15 58 03.1205591662 -34 33 05.048518798       15.609   ~ 3 0
32 2MASS J15580433-3540450 Y*O 15 58 04.3347614579 -35 40 45.119078102           ~ 3 0
33 2MASS J15580617-4208370 Y*O 15 58 06.1671077808 -42 08 37.058226324           ~ 7 0
34 UCAC4 241-093849 Y*O 15 58 13.9336564704 -41 49 56.651770668   15.755 14.193 13.742   ~ 5 0
35 ASAS J155814-4029.5 Y*O 15 58 14.7478267680 -40 29 17.414637540   14.12 12.76 12.33 10.806 K8IVe 6 0
36 2MASS J15581503-4150005 Y*O 15 58 15.0338922432 -41 50 00.662754624           ~ 5 0
37 2MASS J15581942-3842389 Y*O 15 58 19.4342162400 -38 42 38.999248164           ~ 4 0
38 Gaia DR3 5996145365985082624 Y*O 15 58 20.4015272472 -40 33 05.846760396           ~ 4 0
39 UCAC4 241-093893 Y*O 15 58 22.5533917694 -41 49 10.595800323   15.283 13.746 13.356   ~ 4 0
40 2MASS J15582645-3858009 Y*O 15 58 26.4567922728 -38 58 00.892215480           ~ 5 0
41 UCAC4 239-091392 Y*O 15 58 59.2380687384 -42 16 13.107524844   15.883 14.374 14.225   ~ 7 0
42 2MASS J15590456-4210583 Or* 15 59 04.5642407592 -42 10 58.431258192       18.66 16.07 ~ 10 0
43 WRAY 15-1400 TT* 15 59 16.4717314824 -41 57 10.300018176   13.5 12.0     K7IVe 125 0
44 V* RY Lup Or* 15 59 28.3864710696 -40 21 51.249496176   12.62 9.90     G8/K1IV-V 251 0
45 UCAC4 240-092178 Y*O 15 59 44.1110441088 -42 11 55.873777740           ~ 4 0
46 UCAC4 282-084508 Y*O 15 59 48.8299159200 -33 38 02.875646328   16.725 15.023 14.923   ~ 4 0
47 UCAC3 96-205744 Or* 16 00 00.6018563304 -42 21 56.821951152   17.29 15.85 15.25 13.43 M4.5 47 0
48 UCAC3 96-205752 Or* 16 00 02.3583827328 -42 22 14.600258148   16.86 15.46 14.98 13.59 M4 54 0
49 2MASS J16002612-4153553 Or* 16 00 26.1203153232 -41 53 55.371567156   16.57 16.45 15.70 13.80 M5.25 42 0
50 Sz 130 TT* 16 00 31.0374709944 -41 43 36.988516560   15.82 14.71 13.56 12.46 M1.5 73 0
51 V* MY Lup TT* 16 00 44.5202267160 -41 55 30.935126748   12.64 12.17 11.06   K0 144 0
52 Sz 131 Or* 16 00 49.4333360352 -41 30 03.916812096   17.51 16.13 14.60 12.92 M2 55 0
53 NAME Lupus Complex SFR 16 03 -38.1           ~ 851 0
54 HD 325367 Or* 16 03 05.4915085848 -40 18 25.426727676   11.40 8.50     M0 406 0
55 Lupus 4 MoC 16 03 12.4 -42 07 43           ~ 163 0
56 2MASS J16031331-4317192 Y*O 16 03 13.3154719138 -43 17 19.286023424           ~ 5 0
57 UCAC4 248-088284 Y*O 16 03 30.7133525016 -40 24 33.901449912   16.958 15.577 15.086   ~ 7 0
58 2MASS J16034599-4356106 Y*O 16 03 45.9936487944 -43 56 10.694731452           ~ 3 0
59 2MASS J16034805-4140439 Or* 16 03 48.0586870944 -41 40 43.960152108       16.76 14.50 M6.5 10 0
60 2MASS J16040754-3612524 Y*O 16 04 07.5431373864 -36 12 52.430603832           ~ 4 0
61 2MASS J16041607-4110394 Y*O 16 04 16.0747684840 -41 10 39.494001703           ~ 4 0
62 UCAC3 102-194315 Y*O 16 06 44.6361641112 -39 04 32.891515896       15.19 13.10 ~ 9 0
63 Gaia DR3 5991779170973971328 Y*O 16 06 46.8647539560 -43 47 07.187491068           ~ 2 0
64 2MASS J16065870-3904051 Y*O 16 06 58.7034711792 -39 04 05.029437072       17.52 15.19 ~ 10 0
65 V* HO Lup A Or* 16 07 00.5998021080 -39 02 19.515199452           M0 22 0
66 V* HO Lup B Y*O 16 07 00.6752385384 -39 02 18.260138076           M4.5 18 0
67 THA 15-21 TT* 16 07 10.0694468880 -39 11 03.260683896   15.28 13.70 13.70 12.49 K7-M0 84 0
68 THA 15-20 TT* 16 07 11.5873449384 -39 03 47.492129340   16.25 14.58 14.11 12.92 M0.5 122 0
69 RX J1607.2-3839 TT* 16 07 13.6947058536 -38 39 23.892759648 15.22 14.11 12.76 11.87 10.95 K7 20 0
70 ASAS J160744-4322.8 Y*O 16 07 45.2929474680 -43 22 45.465287232   13.87 12.53 12.12 10.956 ~ 5 0
71 2MASS J16074742-4001371 Y*O 16 07 47.4308469216 -40 01 37.148456280           ~ 6 0
72 Sz 95 TT* 16 07 52.3109740056 -38 58 06.091698756   16.714 15.189 14.934 12.53 ~ 66 0
73 SONYC Lup3-3 LM* 16 07 55.1838796776 -39 06 03.793003452       18.83 16.06 M6.5 10 0
74 2MASS J16075888-3924347 TT* 16 07 58.8952865040 -39 24 34.774540992   17.34 17.8 16.58 14.74 M4.5 18 0
75 2MASS J16080017-3902595 Or* 16 08 00.1718615064 -39 02 59.504573976   16.94 17.01 16.72 14.31 M5.5e 53 0
76 2MASS J16080475-3904495 LM* 16 08 04.7606778408 -39 04 49.513861992       19.62 16.76 M7 9 0
77 Sz 96 TT* 16 08 12.6308620920 -39 08 33.470354256   14.80 13.43 13.69 11.84 ~ 87 0
78 UCAC4 258-094196 Y*O 16 08 15.3581902920 -38 32 33.997476408       16.245   ~ 7 0
79 SONYC Lup3-5 LM* 16 08 16.0404001440 -39 03 04.320708732   17.74 19.92 18.15 15.28 M7.5 36 0
80 UCAC3 102-194744 Y*O 16 08 17.3983005480 -39 01 06.179222856       15.21 13.31 ~ 11 0
81 UCAC4 245-093154 Y*O 16 08 21.1125729648 -41 09 36.357840576   16.113 14.844 14.106   ~ 4 0
82 THA 15-24 Or* 16 08 21.8037909864 -39 04 21.491863824   16.18 14.61 14.67 12.92 M3 70 0
83 V* V1279 Sco Or* 16 08 22.4935277520 -39 04 46.427612052   14.99 13.66 11.70 11.21 M0.4 154 1
84 2MASS J16082279-3900591 TT* 16 08 22.7935199352 -39 00 59.059019664     15.05 15.02 12.75 ~ 19 0
85 THA 15-25 Or* 16 08 24.0422612880 -39 05 49.433170740   15.49 16.00 15.39 14.17 M3.5 59 0
86 V* V1093 Sco TT* 16 08 27.7818643128 -39 00 40.623399936     14.57 13.54 12.20 ~ 21 0
87 THA 15-29 Or* 16 08 30.2687378568 -39 06 11.176056000   14.8 11.14 15.18 13.15 M4 76 0
88 2MASS J16083048-3828225 Y*O 16 08 30.4753100856 -38 28 22.555618356           ~ 6 0
89 IRAS 16051-3820 Or* 16 08 30.6994064064 -38 28 26.846324004   11.89 11.15 10.67   K2 89 0
90 THA 15-30 TT* 16 08 30.8142130416 -39 05 48.837746436   15.2 15.25 13.96 13.57 M5 73 0
91 SONYC Lup3-28 LM* 16 08 33.0523649616 -38 52 22.432604376       17.96 15.37 M7.5 13 0
92 V* V856 Sco Ae* 16 08 34.2870044544 -39 06 18.325711332 7.66 7.41 7.05 6.92   A9V_sh 405 0
93 Gaia DR3 5997083524288339200 Y*O 16 08 35.5754550128 -39 00 35.222593654           ~ 4 0
94 UCAC3 102-194847 Or* 16 08 35.7826940376 -39 03 47.933557092   16.88 15.49 15.02 13.09 M6 39 0
95 V* V1094 Sco TT* 16 08 36.1772010696 -39 23 02.464980972 16.01 15.00 13.48 12.47 11.45 ~ 101 1
96 Sz 106 Or* 16 08 39.7597402848 -39 06 25.321212288   15.1   15.00 14.66 M2.5 55 0
97 Sz 107 Or* 16 08 41.7980924472 -39 01 37.038551232   17.31 16.06 15.42 13.20 M5.5 48 0
98 2MASS J16084817-3909197 Or* 16 08 48.1774909152 -39 09 19.828771092   17.27 17.41 17.29 15.02 ~ 14 0
99 IRAS 16054-3857 Or* 16 08 49.3987083072 -39 05 39.447341844   16.76 17.71 15.89 14.24 M4.5 61 0
100 V* V1193 Sco Or* 16 08 51.5693655096 -39 03 17.707587264   15.27 14.58 13.72 12.28 M4.5 82 0
101 UCAC3 102-194910 Or* 16 08 53.2420957464 -39 14 40.160339952   17.53 16.35 15.35 13.52 M3 62 1
102 RX J1608.9-3905 TT* 16 08 54.2744987760 -39 06 05.799061764 12.57 11.91 10.88 10.28 9.74 K2.0 33 0
103 UCAC2 14861687 Or* 16 08 54.2933210976 -39 46 04.648846584 18.68 18.68 15.33 14.26 12.57 M3.5 16 0
104 THA 15-33 TT* 16 08 54.6849382512 -39 37 43.145069664   15.34 13.98 13.29   M1IVe 109 0
105 UCAC4 241-095588 Y*O 16 08 54.9945100008 -41 52 00.626863584       16.143   ~ 4 0
106 2MASS J16085529-3848481 Or* 16 08 55.2899613672 -38 48 48.174613416   17.36   17.24 15.24 M6.5 43 1
107 Sz 112 Or* 16 08 55.5289090032 -39 02 33.941081832   16.62 15.39 14.78 12.93 M6 76 0
108 THA 15-34 Or* 16 08 57.8026653048 -39 02 22.853868252   17.46 16.50 16.64 14.65 M6 67 0
109 2MASS J16085953-3856275 Or* 16 08 59.5395612120 -38 56 27.592929708       19.25 16.91 M8.5e 38 0
110 2MASS J16090141-3925119 Or* 16 09 01.4148377304 -39 25 11.923332420   16.92 15.31 15.04 13.48 M4 58 0
111 THA 15-35 Or* 16 09 01.8486544824 -39 05 12.414717240   15.33 14.12 14.35 12.54 M5.5 142 0
112 Sz 115 TT* 16 09 06.2137580736 -39 08 51.873869400   16.88 15.48 15.09 13.12 ~ 58 0
113 2MASS J16090850-3903430 TT* 16 09 08.5062297456 -39 03 43.080273612   18.00 16.60 16.43 14.16 M5.0 21 0
114 2MASS J16092279-3855506 Y*O 16 09 22.7973325920 -38 55 50.705258016       14.58 12.62 M5 10 0
115 2MASS J16092697-3836269 Or* 16 09 26.9795990952 -38 36 26.933727420   17.55   16.31 14.74 M4.5 43 0
116 RX J1609.4-3850A Or* 16 09 27.3894037704 -38 50 19.250092104           ~ 7 0
117 RX J1609.4-3850B Y*O 16 09 27.3997763712 -38 50 17.758631796           ~ 5 0
118 2MASS J16092800-3848538 Y*O 16 09 28.0069460952 -38 48 53.764124040       16.08 13.99 M5.5 10 0
119 Lupus 3 SFR 16 09.6 -39 03           ~ 348 0
120 V* V1095 Sco TT* 16 09 39.5245401360 -38 55 07.090892580   12.94 11.524 10.77 9.924 ~ 24 0
121 2MASS J16094070-4222393 Y*O 16 09 40.7120909939 -42 22 39.370765256           ~ 4 0
122 THA 15-37 Or* 16 09 44.3607357216 -39 13 30.167581764   15.84 14.59 14.20 12.38 M2 70 0
123 Sz 118 Or* 16 09 48.6562295568 -39 11 16.847425032   18.32 16.90 16.61 15.00 K6 76 0
124 RX J1609.9-3923A Or* 16 09 53.9811176016 -39 23 27.940509240           ~ 7 0
125 2MASS J16095628-3859518 Or* 16 09 56.2954845696 -38 59 51.581549796   17.37 18.0 16.49 15.28 M6.0e 53 0
126 THA 15-40 TT* 16 10 12.1994252424 -39 21 17.990363016   15.70 14.06 13.88 11.84 M3e 42 0
127 2MASS J16101386-3759589 Y*O 16 10 13.8620329440 -37 59 58.959032496       16.66 14.37 M6 8 0
128 2MASS J16101857-3836125 Or* 16 10 18.5677223424 -38 36 12.598346628   18.37 16.63 16.67 14.70 M5 37 0
129 2MASS J16102955-3922144 Or* 16 10 29.5517478000 -39 22 14.451017844   17.51 16.31 15.79 13.90 M4.5 60 0
130 THA 15-42 Or* 16 10 51.5849835192 -38 53 13.767885384   15.89 14.48 14.44 12.95 M1e 84 0
131 2MASS J16105631-3947168 Y*O 16 10 56.3148816597 -39 47 16.824017757           ~ 7 0
132 2MASS J16105662-3939081 Y*O 16 10 56.6265231264 -39 39 08.104672100           ~ 6 0
133 2MASS J16111287-3905131 TT* 16 11 12.8702239968 -39 05 13.105226256           ~ 13 0
134 Gaia DR2 5998489868375056384 Y*O 16 11 26.9574542579 -36 48 22.388707384           ~ 1 0
135 2MASS J16114484-3832445 Y*O 16 11 44.8498394040 -38 32 44.556385488   17.49   17.12 14.73 ~ 14 0
136 UCAC4 231-105127 Y*O 16 11 47.8817814119 -43 58 33.788160439   14.666 13.191 12.886   ~ 3 0
137 2MASS J16115006-4015007 Y*O 16 11 50.0685061512 -40 15 00.715954716           ~ 5 0
138 2MASS J16115979-3823383 TT* 16 11 59.7947194344 -38 23 38.374012212   18.17 16.55 16.24 14.26 M5.0e 52 0
139 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
140 UCAC3 104-204340 Y*O 16 12 07.6124856384 -38 13 24.387555432       14.42 12.72 M4.5 10 0
141 2MASS J16122559-3817428 Y*O 16 12 25.6133468016 -38 17 42.811403928       17.42 15.30 M6 9 0
142 UCAC3 104-204438 Or* 16 12 43.7499349656 -38 15 03.075603264   15.00 13.44 13.39 11.61 M1 62 0
143 Lupus 7 Cld 16 14 10 -44 02.8           ~ 4 0
144 UCAC4 262-092979 Y*O 16 14 45.4096992509 -37 41 43.121597988       13.973   ~ 3 0
145 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1497 1
146 2MASS J16150613-3902210 Y*O 16 15 06.1306216632 -39 02 21.114694212           ~ 6 0
147 UCAC4 262-093359 Y*O 16 17 05.6180810520 -37 45 12.107156976       15.051   ~ 5 0
148 PN SB 27 Y*O 16 19 14.0367020544 -37 47 27.911332680   16.424 15.039   13.130 ~ 16 1
149 Lupus 5 MoC 16 21 -37.5           ~ 63 0
150 UCAC4 253-090332 Y*O 16 21 58.5084270432 -39 30 01.838843316       15.655   ~ 4 0
151 UCAC4 251-090746 Y*O 16 23 51.2630703024 -39 59 21.109230744   16.334 14.783 14.394   ~ 3 0
152 Lupus 6 Cld 16 25 -40.3           ~ 51 1
153 V* V1062 Sco a2* 16 38 30.9410484900 -39 09 08.389193766   6.92 6.95     ApSi 78 0
154 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 16269 0

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