2018AJ....156..138T

Query : 2018AJ....156..138T

2018AJ....156..138T - Astron. J., 156, 138-138 (2018/September-0)

Yes, multi-periodic dwarfs in Upper Scorpius are binaries.

TOKOVININ A. and BRICENO C.

Abstract (from CDS):

We found that multi-periodic low-mass stars discovered by Kepler K2 in the Upper Scorpius association are close binaries with typical separations of the order of 10 au and large mass ratios. These stars were surveyed by speckle interferometry at the SOAR telescope with spatial resolution of 0.''04. Out of 129 observed targets, we resolved 70 pairs (including 16 previously known ones and three new triple systems). The distribution of projected separations of binaries with primary stars less massive than the Sun corresponds to a log-normal with median of 11.6 au and logarithmic dispersion of 0.60 dex, similar to M dwarfs in the field. Future orbits of newly discovered binaries will provide accurate measurements of masses to calibrate pre-main-sequence evolutionary tracks; a tentative orbit of one previously known binary is determined here.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): binaries: general - binaries: visual - stars: pre-main sequence

CDS comments: Misprints: EPIC 20408292 = EPIC 204608292, EPIC 20429883 = EPIC 204429883, EPIC 204506077 = EPIC 204506777.

Simbad objects: 148

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Number of rows : 148
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 NGC 2632 OpC 08 39 58.4 +19 36 33           ~ 1733 0
3 2MASS J15550213-2149434 Or* 15 55 02.1400394112 -21 49 43.524440148         10.62 M0.0e 10 0
4 HD 142424 dS* 15 55 17.5832241720 -23 22 03.752196348   8.78 8.43   7.92 A4IV/V 45 0
5 UCAC2 21338024 Or* 15 55 29.8028998584 -25 44 50.431340904   15.56 13.84 13.34 11.47 M0.5e 13 0
6 HD 142506 TT* 15 55 48.8220082584 -25 12 24.119074116   11.134 10.274 10.252 9.52 G8V 41 0
7 RIK 21 Or* 15 56 25.0949524104 -20 16 16.269348540       16.01 12.60 M5.0e 15 0
8 RX J155627.5-233848 Y*O 15 56 27.6188276664 -23 38 52.110175344   16.05 14.25 14.05 11.55 M3 13 0
9 2MASS J15564244-2039339 Or* 15 56 42.4469156592 -20 39 34.139001816       15.51 12.86 M3.5e 24 0
10 ** TOK 737B Y*? 15 56 42.5110103640 -20 39 33.056742312           ~ 5 0
11 2MASS J15570368-2304484 Or* 15 57 03.6838921440 -23 04 48.436551156         12.83 M4.5e 20 0
12 HD 142784 ** 15 57 15.5655020808 -25 15 13.379977476   8.78 8.44   7.99 A5IV 17 0
13 RX J1557.3-2529 TT* 15 57 16.743336 -25 29 19.31604   14.127 12.680 12.297 10.84 M0 26 0
14 V* V1148 Sco BY* 15 57 34.3068411912 -23 21 12.268691748         11.27 M1IVe 47 0
15 HD 142988 Ro* 15 58 30.3900779112 -20 53 35.982691620   7.50 7.26   6.85 A3III 26 0
16 ATO J239.6508-23.8006 Ro* 15 58 36.2183391264 -23 48 01.992679308   17.33 15.66 15.58 12.71 ~ 17 0
17 HD 143006 Or* 15 58 36.9126279888 -22 57 15.220559196   10.92 10.14   8.70 G5IVe 338 0
18 HD 143069 ** 15 59 11.8932209400 -26 35 00.922791228   8.41 8.13   7.58 A3V 14 0
19 [PBB2002] USco J155918.4-221042 Or* 15 59 18.3920985168 -22 10 43.006914876         12.74 M4e 32 0
20 2MASS J15593807-2603233 Or* 15 59 38.0714236824 -26 03 23.385772296         12.93 M5.5e 18 0
21 2MASS J15594989-2555584 Or* 15 59 49.8890750184 -25 55 58.549443744   14.3     12.01 M2 22 0
22 V* V1150 Sco Or* 15 59 59.9527097064 -22 20 36.759121188     11.99   10.90 M1V 40 0
23 RX J1600.5-2027 TT* 16 00 31.3480737649 -20 27 04.999094488   14.8     11.16 M1 27 0
24 UCAC4 343-079620 * 16 00 36.1446324384 -21 27 34.063050600   16.18 15.52 15.65   ~ 1 0
25 2MASS J16004135-2240416 Or* 16 00 41.3447911752 -22 40 41.679219720         12.16 M3.75 15 0
26 HD 143318 Ro* 16 00 42.6614223288 -26 23 29.694523056   9.89 9.32   8.60 F5V 16 0
27 V* V1151 Sco Or* 16 01 05.1852470424 -22 27 31.320270432   15.23 13.69 13.38 11.14 M3Ve 37 0
28 [PBB2002] USco J160110.4-222227 Or* 16 01 10.3720065648 -22 22 27.625432908         12.39 M4e 23 0
29 UScoCTIO 19 Or* 16 01 13.9717017672 -25 16 28.687475784   17.64 15.96 15.88 12.95 M4.0e 19 0
30 RX J1601.7-2049 Or* 16 01 47.4388749576 -20 49 45.748969788   14.3     10.87 M0 34 0
31 UCAC4 335-081492 Y*O 16 03 33.7972817232 -23 05 19.011359724   13.76 12.50 12.16 10.88 K7 15 0
32 RX J1603.9-2031B TT* 16 03 54.9656958000 -20 31 38.559952200   14.0 13.205 12.20 10.932 M0 31 0
33 [M81] I-490 Or* 16 04 18.9135130896 -24 30 39.860961120   15.56 13.87 13.50 11.23 M2.5e 28 0
34 RX J160421-21307 TT* 16 04 20.9770582632 -21 30 41.699268144   16.6     11.99 M2 34 0
35 UCAC4 342-077417 Or* 16 04 35.8789221432 -21 39 22.223794932   17.49 15.53 15.35 12.42 M4.5 15 0
36 2MASS J16043627-2139224 Y*? 16 04 36.2752830696 -21 39 22.570749000           ~ 10 0
37 UCAC2 23648004 Or* 16 06 59.3730970344 -20 33 04.731422688       14.73 12.13 ~ 16 0
38 RX J1607.0-2036 Or* 16 07 03.5541108312 -20 36 26.875993608   13.54 12.232 11.75 10.334 M0 24 1
39 HD 144548 EB* 16 07 17.7847898136 -22 03 36.556794720   9.37 8.752   7.868 F7V 70 0
40 ATO J241.8489-23.1067 Or* 16 07 23.7590848776 -23 06 23.978443464   16.78 15.11 14.87 12.33 M3.25 11 0
41 2MASS J16072747-2059442 TT* 16 07 27.4601652072 -20 59 44.160712224       16.18 12.94 M4.5V 32 0
42 1RXS J160743.0-203633 Or* 16 07 44.4912659352 -20 36 02.943558180         11.66 M4e 27 0
43 ATO J241.9906-23.1567 Y*O 16 07 57.7614331800 -23 09 23.774609484           M3.75 9 0
44 UCAC2 22491958 ** 16 07 57.766176 -23 09 23.69412   15.85 14.28 14.20 11.54 ~ 8 0
45 Gaia DR3 6242414358317262336 Y*O 16 07 57.8609317800 -23 09 21.842178516           M4.5 9 0
46 UCAC4 327-078787 ** 16 07 58.7854494148 -24 41 31.935548908       15.290 12.37 M4 12 0
47 Gaia DR2 6245741579284267520 Or* 16 08 01.5355465235 -19 27 57.993600461           ~ 3 0
48 [PGZ2001] J160801.5-192757 Y*O 16 08 01.563048 -19 27 57.85920   16.59 15.23 14.77 12.23 M4e 21 0
49 Gaia DR3 6245741583582047744 V* 16 08 01.5779315775 -19 27 58.584897753           ~ 1 0
50 UCAC2 20881801 Or* 16 08 04.1088389136 -26 40 44.733061956   15.92 13.63 13.26 11.32 M0.5e 9 0
51 HD 144713 Ro* 16 08 05.2219779464 -24 55 33.239167559   9.82 9.22   8.42 F3/5V 31 0
52 [T64] 3 Or* 16 08 23.2468097568 -19 30 00.977031108         11.79 K9e 75 0
53 1RXS J160835.6-191206 Or* 16 08 34.3637759040 -19 11 56.194672272   13.000   11.342 9.930 K5: 16 0
54 HD 144822 Ro* 16 08 35.1408843816 -20 45 29.633527260   8.99 8.35   7.60 F4V 50 0
55 UCAC4 332-079645 Or* 16 08 39.0880278888 -23 40 05.623575348       14.01 11.63 M3.25 20 0
56 [PGZ2001] J160843.1-190051 Or* 16 08 43.0806637296 -19 00 52.228840464   17.36 16.32 15.70 12.91 M5e 19 0
57 [PGZ2001] J160854.0-203417 Or* 16 08 54.0813623952 -20 34 18.111579348         12.69 M4e 21 0
58 2MASS J16085695-2835573 Or* 16 08 56.9530453896 -28 35 57.419720448         12.19 M4.5e 16 0
59 UPM J1609-2222B Y*? 16 09 20.6225781336 -22 22 06.719895696           ~ 5 0
60 UPM J1609-2222 Y*O 16 09 20.640576 -22 22 05.74608   17.05 15.90 15.54 12.20 M4.5Ve 16 0
61 UCAC2 24614911 Or* 16 09 29.1956314632 -18 52 53.602494384   14.16 12.73 12.30 10.97 K4IVe 14 0
62 2MASS J16093575-2138057 Or* 16 09 35.7529463544 -21 38 05.833252392         12.38 M2.5e 16 0
63 2MASS J16100184-2349432 LM* 16 10 01.8424840704 -23 49 43.413993192         12.72 M5.0 21 0
64 UCAC2 20652074 Y*O 16 10 03.1090536696 -27 28 39.589796496       15.08 12.39 M4 10 0
65 UCAC4 331-082648 LM* 16 10 56.1889989576 -23 49 28.939347084       14.74 12.06 M4.5e 14 0
66 UCAC2 21567592 Or* 16 10 57.9016111368 -25 11 09.964525884       14.85 12.43 M3.75 13 0
67 UCAC4 325-083346 Or* 16 11 07.4427465432 -25 03 01.702706652       14.496 12.12 M3.25 19 0
68 HD 145333 Ro* 16 11 15.9622985712 -23 12 14.600392956   9.40 9.01   8.43 F0V 28 0
69 NAME Upper Sco Association As* 16 12 -23.4           ~ 1586 1
70 HD 145519 SB* 16 12 05.9979800304 -19 03 44.400646836   8.19 8.00   7.44 B9V 53 0
71 Gaia DR3 6243884233564685568 Y*O 16 12 08.2316759400 -20 33 01.529733420           M3.75 9 0
72 UCAC2 23648943 ** 16 12 08.244216 -20 33 01.64520   17.31 15.78 15.13 12.46 ~ 8 0
73 Gaia DR3 6243884233564685440 Y*O 16 12 08.3299822368 -20 33 02.653662168           M4.5 5 0
74 2MASS J16130234-2501460 Or* 16 13 02.3465123544 -25 01 46.088858244         11.69 M2 16 0
75 UCAC4 361-075661 Or* 16 13 20.8120590648 -17 57 52.088182524       15.236 12.47 M4 13 0
76 UCAC4 361-075662 Or* 16 13 21.2380329768 -17 57 48.725530956       15.253 12.61 M4 14 0
77 UPM J1613-2726 ** 16 13 24.578 -27 26 13.16   17.84 15.30 14.96 12.31 ~ 9 0
78 ATO J243.4017-23.4408 Y*O 16 13 36.449376 -23 26 27.03408   15.97 14.44 13.92 11.74 M2.5e 11 0
79 UGCS J161343.50-184552.8 ** 16 13 43.4954927496 -18 45 52.922511144   17.7   15.9 13.26 ~ 9 0
80 UCAC4 339-077149 Or* 16 13 43.6603480968 -22 14 59.481329568   14.610 13.217 12.83 11.35 K7IVe 18 0
81 HD 145792 a2* 16 13 45.4979280816 -24 25 19.529982106   6.43 6.43   6.14 B6IV 137 0
82 HD 145778 Or* 16 13 47.8108407264 -27 47 33.945641988   9.72 9.29   8.69 F3V 28 0
83 UCAC4 326-081308 Or* 16 13 56.6130339240 -24 57 57.244887180       15.16 12.65 M3.5e 12 0
84 2MASS J16140380-2453088 Or* 16 14 03.8055540384 -24 53 08.964893148         12.29 M1.0e 20 0
85 Gaia DR3 6242670647604082688 Y*? 16 14 10.0936036289 -22 17 23.963720859           ~ 4 0
86 UCAC2 22942728 Y*O 16 14 10.117920 -22 17 23.52300       15.040 12.58 M4.0e 10 0
87 Gaia DR2 6242670647606717952 Or* 16 14 10.1281473781 -22 17 23.247178777           ~ 6 0
88 BD-19 4341 V* 16 14 13.8190472568 -19 39 36.250588512   10.33 9.61   8.56 K0IV 21 0
89 HD 145942 Ro* 16 14 20.5043922720 -22 08 09.713112504   7.99 7.72   7.28 A2IV 29 0
90 UCAC4 356-078075 Or* 16 14 28.9301755776 -18 57 22.516495416       14.621 11.92 ~ 25 0
91 2MASS J16145269-2308025 Or* 16 14 52.6904281800 -23 08 02.787813060         12.11 M3.5e 15 0
92 UCAC2 19681947 Or* 16 15 00.5913113568 -29 19 35.295191436   15.88 14.36 14.02 11.80 M3.0e 9 0
93 UCAC2 22493422 Or* 16 15 54.8574868392 -23 15 15.080520240       15.63 12.86 M4.5 14 0
94 2MASS J16161720-2609101 Or* 16 16 17.1942215112 -26 09 10.235221956         10.96 K4.0e 14 0
95 UGCS J161620.11-234414.3 ** 16 16 20.1176107560 -23 44 14.172676152         12.78 M5.25--M5 14 0
96 HD 146266 * 16 16 22.9387586760 -25 03 46.752601644   9.04 8.69 9.29 7.84 A1V 28 0
97 HD 146285 Ro* 16 16 25.1723345064 -24 59 19.464122400   8.12 7.92   7.47 B8V 94 0
98 HD 146330 Ro* 16 16 44.2531719816 -25 13 45.280769412   9.28 8.87   8.32 A5IV 27 0
99 UCAC2 21797023 Or* 16 16 47.9428279008 -24 40 28.293233664       15.95 12.93 M3.25 13 0
100 2MASS J16172615-2450592 Or* 16 17 26.1517783944 -24 50 59.294674860         12.49 M2.5e 18 0
101 UCAC4 326-081709 Or* 16 17 29.9423282904 -24 51 03.482948736       15.15 12.36 M2.5e 12 0
102 UCAC4 358-078274 LM* 16 18 41.8924236744 -18 32 39.838598628       15.40 12.65 M5e 7 0
103 2MASS J16194538-2147577 Or* 16 19 45.3902651952 -21 47 57.762904128         11.27 M1.5e 18 0
104 2MASS J16202724-2126068 Or* 16 20 27.2442184344 -21 26 06.878556348         11.41 M1.5e 15 0
105 2MASS J16203640-2123120 Or* 16 20 36.4075568544 -21 23 12.068070684         12.62 M4.5e 19 0
106 GSC 06798-00091 Y*O 16 20 44.6922554328 -24 31 38.379121896   13.62 12.39 12.28 10.54 G0 12 0
107 HD 147137 dS* 16 20 50.2312331112 -22 35 38.789976084   9.42 9.03   8.44 A9V 73 0
108 HD 147220 dS* 16 21 21.1457028504 -22 06 32.249997432   9.04 8.59   8.02 A9V 52 0
109 UCAC4 339-078521 Or* 16 21 41.2669126200 -22 12 05.611093560   16.9   15.625 12.55 M4.5e 21 0
110 HD 147255 Ro* 16 21 47.9270335848 -25 56 47.147128440   9.88 9.37   8.75 F6V 29 0
111 HD 147342 Ro* 16 22 10.0486994088 -21 39 17.362937556   8.94 8.65   8.15 A5IV/V 29 0
112 UCAC4 309-087347 Y*O 16 22 13.1509436952 -28 18 58.593797676   14.610 13.209 12.994 11.21 M1 12 0
113 UCAC4 321-085317 Or* 16 22 22.3189412472 -25 52 20.029575972   17.3   14.743 12.07 ~ 19 0
114 UCAC2 22725431 Y*O 16 22 34.2094394112 -22 35 12.422408784   15.68 13.95 13.82 11.05 M3 12 0
115 ATO J245.6835-21.7062 Or* 16 22 44.0716439520 -21 42 22.230411660         12.44 M3.5e 17 0
116 UCAC4 311-087962 Ro* 16 22 51.5818159872 -27 55 37.244105112         12.63 ~ 11 0
117 UCAC4 312-086908 Or* 16 23 59.0004903504 -27 36 03.963196512   16.00 14.69 14.35 11.91 M3.5e 11 0
118 HD 147648 Y*O 16 24 02.9029575912 -25 24 54.073102104 10.39 10.10 9.49 9.726 8.20 B8II 72 0
119 HD 147648B Y*O 16 24 02.9182370352 -25 24 51.960471264           ~ 4 0
120 RX J1624.0-2456 TT* 16 24 06.335736 -24 56 46.98420   14.550 12.999 12.925 10.58 K3IVe 18 0
121 HD 147701 Ro* 16 24 21.3184926168 -25 01 31.448678376 9.66 9.74 9.20   7.42 B5III 143 0
122 HD 147701B * 16 24 21.4446557496 -25 01 33.540832956           ~ 4 0
123 HD 147808 TT* 16 24 51.3636976776 -22 39 32.558556276   10.69 9.81   8.58 G9IVe 47 0
124 UCAC4 339-078802 Y*? 16 24 55.3354521960 -22 14 28.628200500         12.69 ~ 14 0
125 VSS II-22 ** 16 25 07.3124473152 -24 32 27.166216020   17.86 15.93 13.79 11.95 ~ 5 0
126 CD-24 12683 TT* 16 25 19.2498737256 -24 26 52.809731340   11.36 10.55   9.05 G9V 52 0
127 2MASS J16255541-2721242 Or* 16 25 55.4080554480 -27 21 24.244241004         12.55 M5.0e 15 0
128 2MASS J16255790-2600374 Or* 16 25 57.9185598048 -26 00 37.317298968       12.457 10.79 G8-K0V 24 0
129 UCAC4 314-085977 Ro* 16 26 02.1535920984 -27 18 14.208200460   14.035 12.745 12.511 11.02 K5-K7 22 0
130 EM* SR 3 Or* 16 26 09.3229222944 -24 34 12.172009728   10.9 9.88   9.01 A0 126 0
131 DoAr 24 TT* 16 26 17.0743951968 -24 20 21.594730920   16.06 14.21 14.02 11.57 K7.5V 126 1
132 2MASS J16261964-2137207 Or* 16 26 19.6370446128 -21 37 20.770885776         11.84 M1.5e 14 0
133 2MASS J16264120-2200094 Or* 16 26 41.2069351560 -22 00 09.544862700         11.75 M1.5e 16 0
134 [GY92] 93 TT* 16 26 41.2666088952 -24 40 17.881012092       15.41 13.37 M5 65 0
135 CD-25 11509 Ro* 16 27 06.6873368088 -26 07 31.048845564   11.1 10.4   9.46 ~ 18 0
136 EM* SR 12 Or* 16 27 19.5054789229 -24 41 40.414828505     13.28 12.15 10.855 M0IVe 193 1
137 BKLT J162812-245043 TT* 16 28 12.5407886328 -24 50 45.427150572       15.60 13.67 M3 19 0
138 UCAC2 20654585 ** 16 28 45.1560250320 -27 12 19.256402880       15.12 12.36 ~ 7 0
139 UCAC2 19685461 ** 16 29 11.3818227264 -29 00 32.054670288   16.50 14.92 14.59 12.34 ~ 6 0
140 2MASS J16293509-2436104 Y*? 16 29 35.0908459200 -24 36 10.731706344   20.4   17.4 14.24 M4 16 0
141 2MASS J16333881-2150263 Or* 16 33 38.8235891592 -21 50 26.336466456         11.38 M1.5e 11 0
142 UCAC2 20887044 Or* 16 34 05.8543068696 -26 58 44.222642400       12.07 10.67 K3IVe 13 0
143 UCAC2 19938077 Or* 16 35 11.8823140320 -28 45 52.091499816   14.12 12.74 12.44 10.93 K7IVe 9 0
144 HD 149619 Ro* 16 36 39.2285126136 -19 36 07.579833084   9.99 9.43   8.82 A9V 17 0
145 HD 149598 Or* 16 36 52.8873244080 -27 08 18.651582708   10.91 10.14   9.23 F8/G1 29 0
146 HD 149915 SB* 16 38 28.5649111704 -19 31 26.005144980   10.71 10.13   9.31 F0V 12 0
147 2MASS J16425139-2713064 * 16 42 51.3957006312 -27 13 06.579598080           ~ 1 0
148 HD 151376 Ro* 16 47 47.3371014720 -19 52 31.952142732   9.50 9.06   8.47 F2/3V 43 0

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