2022ApJ...939...94M

Query : 2022ApJ...939...94M

2022ApJ...939...94M - Astrophys. J., 939, 94 (2022/November-2)

New Coronae and Stellar Associations Revealed by a Clustering Analysis of the Solar Neighborhood.

MORANTA L., GAGNE J., COUTURE D. and FAHERTY J.K.

Abstract (from CDS):

We present the results of a density-based clustering analysis of the 6D XYZ Galactic positions and UVW-space velocities of nearby (≤200 pc) Gaia Early Data Release 3 stars with radial velocities using HDBSCAN, in opposition to previous studies (Kounkel & Covey 2019; Meingast et al. 2021) that only included positions and tangential velocities. Among the 241 recovered clusters, we identify more than 50 known associations, 32 new candidate stellar streams aged 100 Myr to 3 Gyr, nine extensions of known Theia groups uncovered by Kounkel & Covey, and eight newly recognized coronae around nearby open clusters. Three confirmed exoplanet-hosting stars and three more TESS transiting exoplanet candidates are part of the new groups discovered here, including TOI-1807 and TOI-2076 from Hedges et al. (2021) that were suspected to belong to a yet unidentified moving group. The new groups presented here were not previously recognized because of their older ages, low spatial density, and projection effects that spread out the tangential velocities of their nearby comoving members. Several newly identified structures reach distances within 60 pc of the Sun, providing new grounds for the identification of isolated planetary-mass objects. The nearest member of the newly recognized corona of Volans-Carina is V419 Hya, a known young debris disk star at a distance of 22 pc. This study outlines the importance of further characterization of young associations in the immediate solar neighborhood, which will provide new laboratories for the precise age calibration of nearby stars, exoplanets, and substellar objects.

Abstract Copyright: © 2022. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Stellar associations - Open star clusters - Stellar kinematics - Clustering

Nomenclature: [MGC2022] Crius NNN (Nos 1-241).

Status at CDS : Large table(s) will be appraised for possible ingestion in VizieR.

Simbad objects: 132

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Number of rows : 132
N Identifier Otype ICRS (J2000)
RA 		ICRS (J2000)
DEC 		Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2024 		#notes
1 NAME THA As* 00 00 -62.0           ~ 468 0
2 RX J0107.0+1908 RS* 01 07 05.5189649880 +19 09 08.368480296   10.99 10.00 9.45   ~ 13 1
3 V* HQ Psc RS* 01 35 14.3213460960 +21 16 22.453168584   11.55 10.87 10.49   F9V 15 0
4 BD+36 344b Pl 01 54 38.4963514632 +37 00 18.446902524           ~ 2 0
5 BD+36 344 * 01 54 38.4963514632 +37 00 18.446902524   9.66 9.14     F6V 5 0
6 NGC 752 OpC 01 56 53.5 +37 47 38           ~ 642 0
7 TOI-1224 Er* 02 28 46.4356175640 -80 53 57.200163432   15.513 13.950 13.604   ~ 14 0
8 TOI-1224b Pl 02 28 46.4356175640 -80 53 57.200163432           ~ 2 0
9 V* CF Ari RS* 03 04 05.1384878760 +30 03 09.581354712   11.71 11.21 10.94   K0V 7 0
10 V* CH Ari RS* 03 22 31.5629232192 +28 53 19.999695372   11.45 10.81 10.43   ~ 5 0
11 Cl Melotte 20 OpC 03 26 28.1 +48 58 30           ~ 861 0
12 Cl Melotte 22 OpC 03 46 24.2 +24 06 50           ~ 3435 0
13 HD 285507 PM* 04 07 01.2255871032 +15 20 06.105707556   11.670 10.473     K4 87 0
14 HD 285507b Pl 04 07 01.2255871032 +15 20 06.105707556           ~ 18 0
15 NAME Cas-Tau As* 04 16 +27.6           ~ 79 1
16 K2-136b Pl 04 29 38.9939167752 +22 52 57.793533924           ~ 19 0
17 K2-136c Pl 04 29 38.9939167752 +22 52 57.793533924           ~ 24 0
18 K2-136d Pl 04 29 38.9939167752 +22 52 57.793533924           ~ 17 0
19 K2-136 PM* 04 29 38.9939167752 +22 52 57.793533924   12.48 11.20 10.90   K5.5V 54 0
20 Cl Melotte 25 OpC 04 29 47.3 +16 56 53           ~ 3074 0
21 NAME Tau-Aur Complex SFR 04 30 +25.0           ~ 1357 0
22 NAME HIP 21974 Cluster OpC 04 39 54.2 +71 16 48           ~ 48 0
23 [KC2019] Theia 218 As* 05 07 03.0 -04 27 27           ~ 2 0
24 HD 33512b Pl 05 09 02.4466404144 -36 27 52.415052984           ~ 1 0
25 HD 33512 SB* 05 09 02.4466404144 -36 27 52.415052984   9.77 9.29     F5/6V 14 0
26 TOI-2481b Pl 05 11 13.0710235128 +02 25 38.545553928           ~ 1 0
27 TOI-2481 * 05 11 13.0710235128 +02 25 38.545553928   12.53 11.43     ~ 2 0
28 NAME PM J05202-0414b Pl 05 20 15.9956878560 -04 14 21.971737536           ~ 1 0
29 PM J05202-0414 PM* 05 20 15.9956878560 -04 14 21.971737536     13.564 13.232   ~ 12 0
30 NAME 32 Ori group OpC 05 27 11 +06 16.0           ~ 69 0
31 NAME 118 Tau group Cl* 05 32 +24.0           ~ 21 0
32 NAME Columba Association As* 06 04 19.4 -22 20 40           ~ 280 0
33 [KC2019] Theia 792 As* 06 31 38.83 +21 06 53.7           ~ 3 0
34 NAME AB Dor Moving Group MGr 06 38 53.4 -42 50 04           ~ 471 0
35 [KC2019] Theia 788 As* 07 01 23.9 -31 44 16           ~ 2 0
36 [KC2019] Theia 214 As* 07 02 51.9 +61 14 31           ~ 3 0
37 RSG 2 OpC 07 22 +54.9           ~ 3 0
38 [KC2019] Theia 113 As* 07 40 25.0 -60 30 00           ~ 6 0
39 NGC 2451A OpC 07 42 56.6 -38 15 50           ~ 129 0
40 HD 63433c Pl 07 49 55.0606576176 +27 21 47.457467316           ~ 39 0
41 HD 63433b Pl 07 49 55.0606576176 +27 21 47.457467316           ~ 41 0
42 HD 63433 BY* 07 49 55.0606576176 +27 21 47.457467316   7.59 6.91     G5V 157 0
43 [KC2019] Theia 371 As* 07 51 23.2 -69 06 32           ~ 3 0
44 K2-100b Pl 08 38 24.3002838928 +20 06 21.828057218           ~ 67 0
45 K2-100 Ro* 08 38 24.3002838928 +20 06 21.828057218   11.085 10.521     G2 102 0
46 [KC2019] Theia 600 As* 08 39 46.5 -09 17 33           ~ 3 0
47 NGC 2632 OpC 08 40 13.0 +19 37 16           ~ 1564 0
48 K2-102b Pl 08 40 13.4534275080 +19 46 43.709186244           ~ 15 0
49 K2-102 Ro* 08 40 13.4534275080 +19 46 43.709186244   14.318 13.200     K3V 60 0
50 IC 2391 OpC 08 41 10.1 -52 59 28           ~ 822 0
51 K2-101 Ro* 08 41 22.5783027954 +18 56 01.947224876   13.970 12.957     K3V 67 0
52 K2-101b Pl 08 41 22.5783027954 +18 56 01.947224876           ~ 22 0
53 BD+20 2184b Pl 08 41 43.8160475073 +20 13 36.752729096           ~ 14 1
54 BD+20 2184 Ro* 08 41 43.8160475073 +20 13 36.752729096   10.988 10.431     G2 91 1
55 [QWL2012] Pr0211b Pl 08 42 11.4988704792 +19 16 37.237499940           ~ 18 1
56 [QWL2012] Pr0211c Pl 08 42 11.4988704792 +19 16 37.237499940           ~ 14 0
57 Cl* NGC 2632 JC 278 Ro* 08 42 11.4988704792 +19 16 37.237499940   13.060 12.143     K1V 74 1
58 NAME eta Cha Association OpC 08 42 32.9 -78 57 47           ~ 363 0
59 Cl Platais 8 OpC 09 06 52.3 -58 41 06           ~ 76 0
60 Cl Platais 9 OpC 09 16 57.8 -43 51 43           ~ 52 0
61 [KC2019] Theia 115 As* 09 17 59.41 -61 22 33.9           ~ 4 0
62 [KC2019] Theia 424 As* 09 22 56.3 -66 22 19           ~ 2 0
63 [KC2019] Theia 599 As* 09 29 12.57 -59 19 59.9           ~ 3 0
64 NAME Volans-Carina Association As* 09 37 00.0 -65 18 00           ~ 15 0
65 [KC2019] Theia 508 As* 09 47 42.78 -43 43 56.8           ~ 2 0
66 CPD-63 1435b Pl 10 28 08.9903170248 -64 30 18.936383436           ~ 11 0
67 CPD-63 1435 * 10 28 08.9903170248 -64 30 18.936383436   11.12 10.64     ~ 28 0
68 CD-59 3162b Pl 10 34 40.9845761568 -59 44 54.656496492           ~ 2 0
69 CD-59 3162 * 10 34 40.9845761568 -59 44 54.656496492   11.31 10.86     ~ 3 0
70 IC 2602 OpC 10 42 27.1 -64 25 34           ~ 675 0
71 V* V419 Hya BY* 10 43 28.2715703736 -29 03 51.432666948 9.144 8.596 7.719 7.232 6.806 K1V 183 0
72 NAME TW Hya Association As* 11 01.9 -34 42           ~ 942 0
73 CD-29 8887 TT* 11 09 13.7928873024 -30 01 39.968872752   12.95 11.119 10.642 8.875 M2Ve 128 0
74 [KC2019] Theia 430 As* 11 32 31.4 -37 09 27           ~ 3 0
75 HD 103949 PM* 11 58 11.7046742352 -23 55 25.997599488   9.74 8.72     K3V 51 0
76 HD 103949b Pl 11 58 11.7046742352 -23 55 25.997599488           ~ 2 0
77 NAME Lower Centaurus Crux As* 12 19 -57.1           ~ 477 1
78 NAME Ursa Major Moving Group MGr 12 32 +57.0           ~ 439 2
79 NAME MELANGE-1 As* 12 50 22.0 -88 07 15           ~ 11 0
80 HD 110082 * 12 50 22.0189634880 -88 07 15.721088448   9.75 9.23     F6/7V 21 0
81 BD+39 2643b Pl 13 25 07.9957316160 +38 55 20.944920864           ~ 24 0
82 BD+39 2643 PM* 13 25 07.9957316160 +38 55 20.944920864   11.131 10.257 9.736   K3V 33 0
83 BD+40 2790c Pl 14 29 34.2426073536 +39 47 25.543283496           ~ 11 0
84 BD+40 2790b Pl 14 29 34.2426073536 +39 47 25.543283496           ~ 24 0
85 BD+40 2790 PM* 14 29 34.2426073536 +39 47 25.543283496   10.03 9.14     K0 21 0
86 NAME beta Pic Moving Group MGr 14 30 -42.0           ~ 774 0
87 [KC2019] Theia 94 As* 15 04 24.4 -79 47 04           ~ 4 0
88 NAME Ursa Major Cluster ClG 15 08.8 +67 07           ~ 410 0
89 NAME Upper Centaurus Lupus As* 15 24 -41.9           ~ 474 1
90 TOI-2048 * 15 51 41.8029191904 +52 18 22.731562260   12.32 11.43     ~ 10 0
91 TOI-2048b Pl 15 51 41.8029191904 +52 18 22.731562260           ~ 5 0
92 NAME Upper Sco Association As* 16 12 -23.4           ~ 1369 1
93 NAME Upper Sco-Cen As* 16 15 -24.2           ~ 1330 1
94 [KC2019] Theia 368 As* 16 50 54.82 -35 11 03.2           ~ 3 0
95 [KC2019] Theia 216 As* 16 51 52.3 -67 21 25           ~ 4 0
96 UPK 612 OpC 16 53 41.5 -67 47 17           ~ 14 0
97 [KC2019] Theia 786 As* 17 02 05.8 -72 59 47           ~ 4 0
98 TOI-2133b Pl 17 24 58.5411915561 +32 47 53.233815670           ~ 2 0
99 TOI-2133 PM* 17 24 58.5411915561 +32 47 53.233815670   13.430 12.122 11.739   ~ 1 0
100 [KC2019] Theia 598 As* 17 37 01.94 -49 48 57.9           ~ 3 0
101 NAME Galactic Center reg 17 45 39.60213 -29 00 22.0000           ~ 14415 0
102 [KC2019] Theia 1005 As* 17 55 07.1 +22 38 11           ~ 2 0
103 [KC2019] Theia 677 As* 18 01 40.2 +18 50 07           ~ 2 0
104 [KC2019] Theia 431 As* 18 27 19.16 -18 27 46.3           ~ 3 0
105 [KC2019] Theia 595 As* 18 39 34.013 -06 23 37.68           ~ 3 0
106 [KC2019] Theia 1186 As* 19 00 39.53 -30 13 20.9           ~ 2 0
107 NAME Corona Australis Cloud MoC 19 01 51 -36 58.9           ~ 490 0
108 NGC 6774 OpC 19 16 20.9 -16 19 59           ~ 200 0
109 * bet02 Cyg Be* 19 30 45.3961817904 +27 57 54.989118612 4.69 5.01 5.11     B8Ve 166 0
110 [KC2019] Theia 209 As* 19 51 48.52 +30 31 53.4           ~ 4 0
111 * 27 Vul * 20 37 04.6724184888 +26 27 43.006388904   5.528 5.583     B8V 68 0
112 HD 197481c Pl? 20 45 09.5324974119 -31 20 27.237889841           ~ 50 0
113 HD 197481b Pl? 20 45 09.5324974119 -31 20 27.237889841           ~ 106 0
114 HD 197481 BY* 20 45 09.5324974119 -31 20 27.237889841   10.05 8.627 9.078 6.593 M1VeBa1 1153 0
115 1RXS J205831.1-090233 Ro* 20 58 30.7462582704 -09 02 23.425254204   12.22 11.07 10.91 10.21 ~ 7 0
116 [KC2019] Theia 310 As* 22 12 57.5 +43 28 49           ~ 2 0
117 V* V395 Peg RS* 23 20 23.1508674672 +16 47 23.420451516   11.72 11.04     G5 7 0
118 ASAS J232157+0721.3 Ro* 23 21 56.3793555936 +07 21 33.037173540   11.51 10.913   9.914 K0V 11 0
119 HD 222259Ab Pl 23 39 39.4808078664 -69 11 44.707735104           ~ 50 0
120 HD 222259A RS* 23 39 39.4808078664 -69 11 44.707735104   9.161 8.226 9.28 7.352 G6V 144 0
121 [KC2019] Theia 372 As* 23 41 17.7 +37 30 18           ~ 2 0
122 1SWASP J234945.36+312627.4 BY* 23 49 45.3943766400 +31 26 27.266472204   13.56 12.83 12.46   ~ 3 0
123 NAME e Tau Association As* ~ ~           ~ 17 0
124 NAME Hercules Stream MGr ~ ~           ~ 237 0
125 NAME Coma Berenices Moving Group MGr ~ ~           ~ 84 0
126 NAME Carina-near Moving Group MGr ~ ~           ~ 90 0
127 NAME Argus Association As* ~ ~           ~ 228 0
128 NAME Hyades Moving Group MGr ~ ~           ~ 281 0
129 NAME Psc-Eri Stream St* ~ ~           ~ 49 0
130 NAME Sirius Moving Group MGr ~ ~           ~ 106 0
131 NAME Octans Association As* ~ ~           ~ 89 0
132 NAME Pisces Moving Group MGr ~ ~           ~ 5 0

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