2018A&A...618A..12W

Query : 2018A&A...618A..12W

2018A&A...618A..12W - Astronomy and Astrophysics, volume 618A12-12 (2018/1-0)

New member candidates of Upper Scorpius from Gaia DR1.

WILKINSON S., MERIN B. and RIVIERE-MARICHALAR P.

Abstract (from CDS):

Context. Selecting a cluster in proper motion space is an established method for identifying members of a star-forming region. The first data release from Gaia (DR1) provides an extremely large and precise stellar catalogue, which when combined with the Tycho-2 catalogue gives the 2.5 million parallaxes and proper motions contained within the Tycho-Gaia Astrometric Solution (TGAS).
Aims. We aim to identify new member candidates of the nearby Upper Scorpius subgroup of the Scorpius-Centaurus Complex within the TGAS catalogue. In doing so, we also aim to validate the use of a density-based clustering algorithm (DBSCAN) on spatial and kinematic data as a robust member selection method.
Methods. We constructed a method for member selection using a density-based clustering algorithm (DBSCAN) applied over proper motion and distance. We then applied this method to Upper Scorpius and evaluated the results and performance of the method.
Results. We identified 167 member candidates of Upper Scorpius, of which 78 are new, distributed within a 10° radius from its core. These member candidates have a mean distance of 145.6±7.5pc and a mean proper motion of (-11.4, -23.5)±(0.7, 0.4)mas/yr. These values are consistent with measured distances and proper motions of previously identified bona fide members of the Upper Scorpius association.

Abstract Copyright: © ESO 2018

Journal keyword(s): stars: formation - protoplanetary disks - methods: data analysis

VizieR on-line data: <Available at CDS (J/A+A/618/A12): table1.dat>

Simbad objects: 172

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Number of rows : 172
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 Cl Melotte 22 OpC 03 46 38.0 +24 10 41           ~ 3679 0
2 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 565 1
3 NAME Upper Centaurus Lupus MGr 15 24 -41.9           ~ 567 1
4 TYC 6192-482-1 * 15 33 10.0274994792 -19 44 53.633634144   11.32 10.673 10.27   ~ 11 0
5 HD 138574 * 15 33 42.3687598176 -20 32 55.071736260   8.92 8.64     A3IV/V 10 0
6 CD-26 10936 * 15 33 56.8196910768 -27 05 23.690715108   11.01 10.44     ~ 6 0
7 HD 138721 * 15 34 30.0729068160 -21 55 07.686769152   8.83 8.56     A1/2V 12 0
8 HD 138813 * 15 35 16.1061129072 -25 44 02.992593372   7.37 7.30     A0V 91 0
9 TYC 6768-1476-1 Or* 15 36 42.0620872608 -25 26 18.735520416   12.10 11.12     G 9 0
10 CD-24 12231 Or* 15 41 31.2136894680 -25 20 36.316420188   10.75 9.94     G9IVe 30 0
11 CD-25 11037 * 15 41 33.5570760984 -26 03 56.853200880   10.81 10.22     ~ 5 0
12 HD 140390 * 15 44 21.7360746360 -30 12 02.586206772   9.16 8.86     F0V 12 0
13 TYC 6781-328-1 * 15 45 39.1414111800 -25 20 44.970362772   11.79 11.43 11.21 10.349 G3 23 0
14 TYC 6194-1063-1 * 15 46 48.6603615072 -20 09 31.692642444   11.419 10.760 10.35 10.196 ~ 11 0
15 HD 140855 * 15 46 49.2304474872 -25 14 33.921415248   9.25 8.90     A5IV 15 0
16 CD-28 11578 TT* 15 48 02.9241919992 -29 08 36.999862764   11.56 10.78   9.861 G9IV 24 0
17 HD 141147 * 15 48 21.3045038856 -24 43 49.321862976   10.81 10.10     G6V 13 0
18 HD 141227 * 15 48 50.7858834000 -23 41 09.191650776   9.44 8.85     F5V 18 0
19 CD-30 12558 TT* 15 49 02.7149736240 -31 02 53.785935780   11.91 11.029   9.961 K0IVe 13 0
20 CD-27 10581 Y*? 15 49 13.1692691496 -28 09 52.252103736   11.37 10.53     ~ 2 0
21 CD-25 11113 TT* 15 49 20.9990795520 -26 00 06.318844236   11.78 11.116   9.727 K1IVe 33 0
22 HD 141313 * 15 49 31.9894960536 -31 15 40.034234628   9.27 8.86     F3V 31 0
23 HD 141441 * 15 49 59.7851040768 -25 09 03.556541376   9.70 9.24     A2/3V 43 0
24 HD 141575 * 15 50 30.5669208888 -20 50 53.280608964   8.44 8.17     A2V 19 0
25 HD 141618 * 15 50 56.4122254920 -25 34 19.038247716   10.28 9.74 9.4   G0/2 29 0
26 CD-25 11133 * 15 51 07.9061753856 -25 38 59.277531264   10.45 9.77     F 12 0
27 HD 141882 * 15 52 09.1254662856 -21 40 59.153456928   8.55 8.26     A3IV/V 15 0
28 HD 141939 * 15 52 42.9227817984 -27 05 26.247418296   8.44 8.24     A3III/IV 34 0
29 HD 141960 * 15 52 56.5512289704 -29 50 34.174905108   8.80 8.50     A9V 20 0
30 HD 142113 Ro* 15 53 20.8849695960 -19 23 53.577891024   9.99 9.284   8.360 F8V 38 1
31 HD 142097 * 15 53 21.9261091440 -21 58 16.647117852   8.80 8.39     A5V 53 0
32 HD 142249 * 15 54 14.5318929000 -23 10 07.988619936   10.76 10.12     F5V 19 0
33 HD 142250B LM* 15 54 30.4773546672 -27 19 57.359301384           M8.5-9.5 12 0
34 HD 142506 TT* 15 55 48.8220082584 -25 12 24.119074116   11.134 10.274 10.252 9.52 G8V 41 0
35 HD 142666 TT* 15 56 40.0221861696 -22 01 40.005872148 9.41 9.37 8.82 8.31 8.01 F0V_sh 306 0
36 HD 142705 Ro* 15 56 47.8547012448 -23 11 02.668136316   7.92 7.74     A1Vann 69 0
37 CD-24 12415 Ro* 15 57 38.7983625168 -24 24 32.911194060   10.50 9.91     F5V 13 0
38 HD 142851 * 15 57 59.3452136400 -31 43 44.143237524   6.99 7.02     A0V 47 0
39 HD 142933 * 15 58 12.4446566400 -24 20 38.555098764   10.73 10.12     F5/6V 19 0
40 CD-23 12602 TT* 15 58 12.7076690664 -23 28 36.528700008   11.16 10.36 9.9   G9V 54 0
41 HD 142988 Ro* 15 58 30.3900779112 -20 53 35.982691620   7.50 7.26   6.85 A3III 26 0
42 HD 143006 Or* 15 58 36.9126279888 -22 57 15.220559196   10.92 10.14   8.70 G5IVe 338 0
43 TYC 6191-552-1 TT* 15 58 47.7201616872 -17 57 59.699522340   13.34 12.09 11.68 10.41 K5 58 0
44 HD 142992 * 15 58 50.1395135976 -32 03 08.310511224   9.04 8.67     F0V 34 0
45 CD-27 10685 * 15 58 57.2703796392 -28 02 30.143886720   10.10 9.59     F7V 10 0
46 CD-24 12445 Or* 16 00 00.7745908992 -25 09 42.394617612   11.07 10.50     G0 31 0
47 TYC 6212-1183-1 Or* 16 00 40.5646027152 -22 00 32.231715588   12.259 11.213 11.016 9.931 G9 49 0
48 HD 143318 Ro* 16 00 42.6614223288 -26 23 29.694523056   9.89 9.32   8.60 F5V 16 0
49 CD-22 11298 Or* 16 01 25.6301810064 -22 40 40.289030832   13.02 13.44     K1IV 75 0
50 HD 143472 SB* 16 01 26.6402091024 -25 11 54.615490692   8.11 7.74     A2mA7-F2 50 0
51 HD 143567B LM* 16 01 55.65696 -21 58 53.0076           M8 43 0
52 TYC 6212-1023-1 Or* 16 01 56.4749305056 -21 37 03.907567560   12.88 11.24     K6 19 0
53 BD-19 4288 TT* 16 01 58.2155255520 -20 08 11.954643036   11.58 10.501 9.9 9.275 G9IV(e) 47 0
54 TYC 6212-946-1 * 16 02 03.7543171728 -21 22 46.585538004   11.86 11.04     G2 6 0
55 HD 143600 Ro* 16 02 13.5553901832 -22 41 15.211826808   7.40 7.33     B9Vn 95 0
56 HD 143811 ** 16 03 33.4250542272 -30 08 13.379590788   9.37 8.91     F5V 45 0
57 CD-22 11315 TT* 16 03 35.4984951600 -22 45 56.119524588   11.94 10.969 10.6 9.784 G9 43 0
58 HD 143956 * 16 04 00.2383602864 -19 46 02.926413336   7.91 7.77     B9Van 63 0
59 ScoPMS 27 Or* 16 04 47.7531686256 -19 30 22.916271132   12.43 11.254   9.822 K3IVe 59 0
60 HD 144113 * 16 04 55.4579540808 -20 54 00.019923336   8.43 8.12     A3IV/V 24 0
61 HD 144175 * 16 05 19.1477109288 -23 40 08.831414208   7.70 7.64     B9V 57 0
62 HD 144273 * 16 05 44.8433490312 -19 40 51.805839072   7.62 7.54     B9Vn 31 0
63 TYC 6780-773-1 * 16 06 50.2922220672 -23 06 41.704672788   11.17 10.30     G8-K1 8 0
64 HD 144569 ** 16 07 04.6737231984 -16 56 35.760894468   8.06 7.90     A1VasmA0.5 48 0
65 HD 144586 * 16 07 14.9283734928 -17 56 09.731015556   7.91 7.81     A1IV-VkB9 55 0
66 HD 144548 EB* 16 07 17.7847898136 -22 03 36.556794720   9.37 8.752   7.868 F7V 70 0
67 HD 144587 * 16 07 29.9253920088 -23 57 02.448991044   8.73 8.31     A9V 67 0
68 HD 144713 Ro* 16 08 05.2219779464 -24 55 33.239167559   9.82 9.22   8.42 F3/5V 31 0
69 HD 144729 gD* 16 08 10.5055270728 -23 51 02.406844584   9.62 9.16     F0V 51 0
70 ASAS J160811-1904.9 Ro* 16 08 10.8174737088 -19 04 47.917849296   12.86 11.62 11.43 10.042 K3IVe 27 0
71 ASAS J160814-1908.7 Or* 16 08 14.7441391872 -19 08 32.688788424   13.01 11.403   9.962 K2 48 0
72 HD 144822 Ro* 16 08 35.1408843816 -20 45 29.633527260   8.99 8.35   7.60 F4V 50 0
73 CD-25 11378 TT* 16 08 43.4068352136 -26 02 16.794704112   11.16 10.380   9.265 G9V(e) 42 0
74 HD 144823 Ro* 16 08 43.6654824120 -25 22 36.572585484   9.28 8.80     F3V 45 0
75 HD 144925 * 16 09 02.6009674608 -18 59 44.038968072   7.98 7.78     A0Vn 69 0
76 HD 144981 ** 16 09 20.8887100392 -19 27 25.962756444   8.22 8.04     A0.5Vn 69 0
77 HD 145101 * 16 09 58.0511412720 -22 24 34.909415748   8.01 7.71     A3IV/V 30 0
78 TYC 6213-1122-1 Or* 16 10 12.6430104240 -21 04 44.529015936   13.09 11.57     K3IV 23 0
79 TYC 6784-829-1 * 16 10 13.5056554560 -25 18 47.399783868   11.12 10.49     ~ 6 0
80 RX J1610.3-2502 TT* 16 10 19.1894233032 -25 02 30.224806764   13.50 11.978 11.55 10.26 K5V(e) 41 0
81 HD 145208 Or* 16 10 28.8804245352 -22 13 47.839440360   10.47 9.685   8.580 G7IV(e) 48 1
82 HD 145132 * 16 10 35.9573519064 -32 45 42.786500076   9.75 9.30     F3V 31 0
83 HD 145263 Or* 16 10 55.1057129784 -25 31 21.669357756   9.39 8.98     F2V 89 0
84 TYC 6784-241-1 Ro* 16 11 06.9170131272 -26 09 23.597113860   10.87 10.29     F 11 0
85 HD 145333 Ro* 16 11 15.9622985712 -23 12 14.600392956   9.40 9.01   8.43 F0V 28 0
86 HD 145468 * 16 11 52.6579310256 -22 32 42.119873664   8.56 8.24     A3V 56 0
87 HD 145467 * 16 11 55.5179774208 -21 06 18.009343296   9.42 8.97     F0V 45 0
88 * nu.02 Sco A Or* 16 11 58.5411992736 -19 27 00.628171344   6.61 6.60     B8V 25 0
89 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
90 HD 145504 * 16 12 05.9334257808 -23 14 44.673282852   9.81 9.36     F0V 28 0
91 HD 145519 SB* 16 12 05.9979800304 -19 03 44.400646836   8.19 8.00   7.44 B9V 53 0
92 HD 145505 * 16 12 09.8883693120 -23 55 17.555157300   8.71 8.45     A2IV 37 0
93 CD-27 10839 Y*? 16 12 11.0120314704 -28 18 12.981928464   10.90 10.32     K 19 0
94 HD 145554 * 16 12 21.8331209856 -19 34 44.569291728   7.77 7.64     B9V 106 0
95 BD-18 4244 Or* 16 12 40.5144406080 -18 59 28.267620432   12.15 10.829   9.235 K0IV(e) 97 0
96 HD 145631 * 16 12 44.1005428344 -19 30 10.348834320   7.73 7.60     B9Vann 107 0
97 TYC 6213-85-1 Or* 16 12 46.8133824432 -22 13 31.709178516   13.13 11.20     K3IV(e) 23 0
98 HD 145655 Y*O 16 12 55.3357873368 -23 19 45.705012492   10.04 9.36     G2V 53 0
99 HD 145718 Ae* 16 13 11.5918435992 -22 29 06.621987516   9.29 8.86     A5Ve 130 0
100 HD 145719 Ro* 16 13 28.0063448952 -27 24 13.528679508   8.71 8.42     A6IV 23 0
101 HD 145778 Or* 16 13 47.8108407264 -27 47 33.945641988   9.72 9.29   8.69 F3V 28 0
102 BD-19 4341 V* 16 14 13.8190472568 -19 39 36.250588512   10.33 9.61   8.56 K0IV 21 0
103 HD 145942 Ro* 16 14 20.5043922720 -22 08 09.713112504   7.99 7.72   7.28 A2IV 29 0
104 HD 145998 * 16 14 40.1601360408 -20 14 03.007490352   9.92 9.19     F6V 34 0
105 CD-27 10866 TT* 16 14 59.1828176592 -27 50 22.940776140   12.09 11.205   10.052 K0IV(e) 56 0
106 HD 146055 Ro* 16 15 08.0801145528 -24 35 18.484353960   8.71 8.43     B9V 27 0
107 HD 146069 ** 16 15 09.2806248672 -23 45 35.040285036   10.01 9.48     F2V 54 0
108 HD 146089 Ro* 16 15 10.4480292768 -22 07 09.963868764   10.98 10.32     F5V 44 0
109 CD-23 12815 TT* 16 16 17.9464840536 -23 39 47.541690900   11.42 10.685   9.525 G9IV 50 0
110 HD 146285 Ro* 16 16 25.1723345064 -24 59 19.464122400   8.12 7.92   7.47 B8V 94 0
111 HD 146330 Ro* 16 16 44.2531719816 -25 13 45.280769412   9.28 8.87   8.32 A5IV 27 0
112 HD 146331 Ro* 16 16 50.6245246176 -25 51 46.706743656   8.69 8.30     B9V 55 0
113 CD-24 12649 Or* 16 16 51.3032047920 -24 33 27.800239356   10.99 10.08     F8.0e 19 0
114 HD 146367 Ro* 16 16 53.3790243288 -23 06 37.718069112   9.14 8.68     A9V 44 0
115 HD 146366 * 16 16 54.5699506320 -21 37 15.504916152   10.79 10.19     F6/8V 18 0
116 HD 146416 * 16 16 58.7661399648 -21 18 14.875080156   6.608 6.601     B9V 98 0
117 HD 146457 * 16 17 14.6563025256 -22 55 19.933033656   8.78 8.46     A5III/IV 31 0
118 HD 146494 * 16 17 26.9118392664 -23 20 30.508070352   9.47 9.10     A7III 25 0
119 HD 146516 TT* 16 17 31.3909720200 -23 03 36.123102792     10.143   9.130 G7V 57 0
120 CD-24 12659 Ro* 16 17 54.8149126224 -24 43 33.629526912   11.11 10.31     F3-F5 18 0
121 CD-28 12034 Or* 16 18 11.0708572392 -29 11 12.625045188   11.10 10.460   9.505 G8IV(e) 28 0
122 HD 146606 * 16 18 16.1597216880 -28 02 30.148755612   7.05 7.06     A0V 73 0
123 BD-19 4351 Or* 16 18 19.9756700784 -20 05 34.826118360   11.40 10.49     K1.5e 13 0
124 HD 146706 V* 16 18 28.2567201984 -23 16 27.487470684 7.60 7.69 7.55     B9Van 71 0
125 CD-26 11284 * 16 19 04.2768765936 -26 57 41.311525896   10.96 10.25     A/F 8 0
126 V* V933 Sco a2* 16 20 05.4927999744 -20 03 23.030685720   7.56 7.40     B8:VpSrTiSiEu 204 0
127 HD 147011 * 16 20 07.8351740952 -22 31 08.200885908   10.77 10.17     F3/5V 22 0
128 HD 147013 * 16 20 15.0369611208 -25 38 44.359944612 9.79 9.55 9.10     A0V 49 0
129 HD 146974 * 16 20 15.5143708488 -28 43 00.879810276   9.64 9.09     F8V 23 0
130 HD 147083 dS* 16 20 28.1291157648 -21 30 32.482653264   8.93 8.57     A7III/IV 54 0
131 HD 147103 ** 16 20 30.2664039984 -20 07 03.776227176   7.87 7.56     B9/A0V 59 1
132 HD 147104 * 16 20 30.5682271248 -20 06 51.999342408   8.81 8.41     B9.5Va 60 0
133 HD 147196 Be* 16 21 19.1910323616 -23 42 28.738330020 7.04 7.21 7.04     B6.5V 118 0
134 HD 147255 Ro* 16 21 47.9270335848 -25 56 47.147128440   9.88 9.37   8.75 F6V 29 0
135 HD 147283 Y*? 16 21 57.6880496472 -24 29 43.516609908 11.71 11.08 10.27     A1IV 44 0
136 HD 147342 Ro* 16 22 10.0486994088 -21 39 17.362937556   8.94 8.65   8.15 A5IV/V 29 0
137 HD 147592 * 16 23 47.1714755664 -26 16 15.787997940   9.20 8.91     A0V 67 0
138 HD 147594 Ro* 16 23 53.8604226048 -29 46 40.112300640   9.94 9.271   8.502 G3IV 44 0
139 HD 147627 * 16 24 13.8700656768 -32 08 37.282588656   9.79 9.34     F3V 20 0
140 HD 147701 Ro* 16 24 21.3184926168 -25 01 31.448678376 9.66 9.74 9.20   7.42 B5III 143 0
141 CD-26 11326 * 16 24 29.3984737200 -26 55 37.914383316   11.01 10.32     F 13 0
142 HD 147808 TT* 16 24 51.3636976776 -22 39 32.558556276   10.69 9.81   8.58 G9IVe 47 0
143 HD 147754 * 16 24 56.3117950128 -31 33 59.713962012   8.97 8.66     A9V 18 0
144 HD 147809 ** 16 24 59.1476326440 -25 21 17.974751148   9.02 8.62     A1V 68 0
145 HD 147911 * 16 25 24.1085916504 -21 41 18.712276656   9.62 9.17     A0V 38 0
146 HD 147889 Or* 16 25 24.3163637976 -24 27 56.569805208 8.56 8.73 7.90     B2V 512 1
147 HD 147932 ** 16 25 35.0813422344 -23 24 18.806143896 7.24 7.59 7.27     B7V 142 0
148 HD 148022 * 16 25 52.2361294320 -14 01 27.800035032   10.01 9.46     F7V 23 0
149 TYC 6802-1158-1 Y*O 16 26 23.4340432368 -27 39 00.411219036   11.18 10.43     K3-K7 15 0
150 HD 148040 Ro* 16 26 29.9117541408 -27 41 20.246258940   9.19 8.61     G0V 50 1
151 1RXS J162739.8-224519 TT* 16 27 39.5633275272 -22 45 23.131197504   12.91 11.647   10.101 K2IVe 42 0
152 NAME Ophiuchus Molecular Cloud SFR 16 28 06 -24 32.5           ~ 3969 1
153 HD 148409 Y*? 16 28 52.0081987080 -26 11 55.400768700   10.05 9.52     F6V 18 0
154 HD 148533 Or* 16 29 50.3151687024 -29 03 53.412637860   10.50 9.97     F5V 20 0
155 HD 148563 * 16 29 55.9788094344 -26 35 26.317928616   8.88 8.72     A2Va 36 0
156 HD 148606 * 16 30 13.7811154368 -26 33 19.476446868   9.74 9.17     G0V 21 0
157 V* V2394 Oph EB* 16 31 40.6789944120 -24 25 16.219016976   11.06 10.22     B9 33 0
158 TYC 6803-994-1 Or* 16 31 53.4710511816 -26 36 16.956150192   12.82 11.69     K4IV(e) 17 0
159 HD 148982 * 16 32 50.8806529920 -28 20 39.884927496   10.55 10.00     F7 18 0
160 HD 149619 Ro* 16 36 39.2285126136 -19 36 07.579833084   9.99 9.43   8.82 A9V 17 0
161 TYC 6804-148-1 Y*O 16 36 49.7992101432 -27 19 11.376936120   11.03 10.39     F5-F7 11 0
162 HD 149598 Or* 16 36 52.8873244080 -27 08 18.651582708   10.91 10.14   9.23 F8/G1 29 0
163 HD 149790 * 16 38 10.8091183272 -29 40 40.447749252   9.63 9.17     F3V 37 0
164 HD 149914 Or* 16 38 28.6527873384 -18 13 13.713126384   6.967 6.746     B9.5IV 82 0
165 HD 150193 Ae* 16 40 17.9243127240 -23 53 45.193372692 9.69 9.32 8.79 8.41   A3Va(e) 336 0
166 CD-30 13383 Or* 16 42 07.7233091280 -30 38 37.837311864   11.31 10.40     G8V 19 0
167 HD 150544 * 16 42 53.2245862656 -29 46 55.785434268   10.54 9.87     F6/7V 12 0
168 TYC 6808-745-1 Ro* 16 43 04.7199095736 -28 58 09.724431468   11.66 10.98     ~ 5 0
169 TYC 6821-1017-1 * 16 48 43.8279720912 -29 03 45.516605544   11.42 10.87     ~ 1 0
170 HD 151594 * 16 49 12.2167279128 -22 42 41.683299840   9.28 8.9     F3V 36 0
171 HD 151721 * 16 50 10.7076012984 -26 44 33.160646688   7.60 7.48     A3V 35 0
172 HD 152057 * 16 52 13.3140691992 -26 55 10.818494040   8.68 8.32     F0V 36 1

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