2015ApJ...800..138N

Query : 2015ApJ...800..138N

2015ApJ...800..138N - Astrophys. J., 800, 138 (2015/February-3)

Friends of hot jupiters. II. No correspondence between Hot-Jupiter spin-orbit misalignment and the incidence of directly imaged stellar companions.

NGO H., KNUTSON H.A., HINKLEY S., CREPP J.R., BECHTER E.B., BATYGIN K., HOWARD A.W., JOHNSON J.A., MORTON T.D. and MUIRHEAD P.S.

Abstract (from CDS):

Multi-star systems are common, yet little is known about a stellar companion's influence on the formation and evolution of planetary systems. For instance, stellar companions may have facilitated the inward migration of hot Jupiters toward to their present day positions. Many observed short-period gas giant planets also have orbits that are misaligned with respect to their star's spin axis, which has also been attributed to the presence of a massive outer companion on a non-coplanar orbit. We present the results of a multi-band direct imaging survey using Keck NIRC2 to measure the fraction of short-period gas giant planets found in multi-star systems. Over three years, we completed a survey of 50 targets ("Friends of Hot Jupiters") with 27 targets showing some signature of multi-body interaction (misaligned or eccentric orbits) and 23 targets in a control sample (well-aligned and circular orbits). We report the masses, projected separations, and confirmed common proper motion for the 19 stellar companions found around 17 stars. Correcting for survey incompleteness, we report companion fractions of 48%±9%, 47%±12%, and 51%±13% in our total, misaligned/eccentric, and control samples, respectively. This total stellar companion fraction is 2.8σ larger than the fraction of field stars with companions approximately 50-2000 AU. We observe no correlation between misaligned/eccentric hot Jupiter systems and the incidence of stellar companions. Combining this result with our previous radial velocity survey, we determine that 72%±16% of hot Jupiters are part of multi-planet and/or multi-star systems.

Abstract Copyright: ∼

Journal keyword(s): binaries: close - binaries: eclipsing - methods: observational - planetary systems - planets and satellites: dynamical evolution and stability - techniques: high angular resolution

Simbad objects: 64

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Number of rows : 64
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 WASP-1 V* 00 20 40.0745768856 +31 59 23.954809596   12.06 11.31     F7V 136 1
2 HAT-P-16b Pl 00 38 17.5584024024 +42 27 47.216738232           ~ 67 1
3 HAT-P-16 * 00 38 17.5584024024 +42 27 47.216738232   11.38 10.91     F8 81 1
4 HD 10069 SB* 01 37 25.0332798696 -45 40 40.374717456   9.74 9.30     F6IV/V 260 1
5 HAT-P-32 * 02 04 10.2774374568 +46 41 16.212315084   11.79 11.44 11.23   ~ 88 1
6 HAT-P-32b Pl 02 04 10.2774374568 +46 41 16.212315084           ~ 198 1
7 HAT-P-29 * 02 12 31.4787454416 +51 46 43.563748620   12.30 11.83 11.82   ~ 41 1
8 WASP-11b Pl 03 09 28.5433589520 +30 40 24.862993356           ~ 83 1
9 WASP-11 ** 03 09 28.5433589520 +30 40 24.862993356   12.58 11.57 11.42   K3V 96 1
10 WASP-22 * 03 31 16.3267124400 -23 49 10.840600632   12.38 11.99 11.41   G 78 1
11 BD+57 793 * 04 21 52.7048156328 +57 49 01.889294952   10.27 9.85     F5V 170 2
12 HAT-P-15 * 04 24 59.5350210144 +39 27 38.312978976   13.02 12.41 11.81   G5 53 1
13 WASP-12b Pl 06 30 32.7966092352 +29 40 20.263502460           ~ 847 1
14 WASP-12 * 06 30 32.7966092352 +29 40 20.263502460   12.14 11.57     G0V 358 1
15 HAT-P-24b Pl 07 15 18.0193656720 +14 15 45.408025008           ~ 47 1
16 HAT-P-24 Em* 07 15 18.0193656720 +14 15 45.408025008   12.21 11.76 11.71   F8 68 1
17 XO-4 Em* 07 21 33.1602434760 +58 16 05.109533364   11.15 10.81     F5 79 1
18 HAT-P-20 PM* 07 27 39.9488720808 +24 20 11.516231112   12.58 11.35 11.00   K3V 94 1
19 HAT-P-33b Pl 07 32 44.2173520776 +33 50 06.115051104           ~ 59 1
20 HAT-P-33 Em* 07 32 44.2173520776 +33 50 06.115051104   11.66 11.03 11.10   F4 48 1
21 XO-5 * 07 46 51.9614762400 +39 05 40.460854956     12.1 11.95   G7 59 1
22 BD+50 1471 PM* 07 48 06.4723053776 +50 13 32.920598923   12.002 11.138 10.669 10.243 G9V 203 1
23 BD+06 1909b Pl 08 15 47.9802408792 +05 50 12.350816484           ~ 73 1
24 BD+06 1909 Em* 08 15 47.9802408792 +05 50 12.350816484   10.95 10.35     F7 85 1
25 HAT-P-13 * 08 39 31.8072358440 +47 21 07.273799280   11.15 10.42 10.40   G4 149 2
26 WASP-19 * 09 53 40.0765648584 -45 39 33.057187596   13.05 12.31 12.12 11.35 G8V 207 2
27 HD 233731 Em* 10 22 43.5923328528 +50 07 42.062425248   10.62 9.76 9.44   G5 68 1
28 CD-23 9677 PM* 11 01 35.8978277184 -23 51 38.386984896   11.05 10.28 10.21 9.66 ~ 75 1
29 Ross 905 PM* 11 42 11.0933350978 +26 42 23.650782778   12.06 10.613 10.272 8.24 M3V 750 1
30 CD-31 10766 * 13 55 42.7120177608 -32 09 34.616222028   11.396 10.910     F7 89 1
31 HAT-P-12 PM* 13 57 33.4668726399 +43 29 36.601508739   13.851 12.766 12.428   K5 113 1
32 HAT-P-26 PM* 14 12 37.5331103311 +04 03 36.116569918   12.33 11.76 11.56   K1 81 1
33 WASP-16 * 14 18 43.9225013904 -20 16 31.843626168   12.51 11.29 11.00 10.49 G3V 88 1
34 BD+22 2716 * 14 33 06.3571702344 +21 53 40.981395876   10.194 9.745     F5V 112 1
35 WASP-24 * 15 08 51.7367171808 +02 20 35.962165104   12.00 11.22 11.43   F8-9 71 1
36 BD+36 2593 Em* 15 19 57.9203617176 +36 13 46.738078788   11.83 11.12     F 129 1
37 CD-27 10695 * 15 59 50.9491505016 -28 03 42.312819096   11.83 11.59 11.31 10.92 F4 141 1
38 HD 146389 PM* 16 15 50.3653280520 +10 01 57.284258556   9.866 9.39 9.22   F8 70 1
39 HD 147506 * 16 20 36.3576063720 +41 02 53.106772488   9.15 8.69     F8V 199 1
40 HD 149026 PM* 16 30 29.6185771608 +38 20 50.308980864   8.75 8.14     G0IV 267 1
41 HAT-P-18 Em* 17 05 23.1475097496 +33 00 44.940001716   11.9   12.61   K2V 81 1
42 BD+38 2917b Pl 17 20 27.8781604680 +38 14 31.908984936           ~ 95 1
43 BD+38 2917 Em* 17 20 27.8781604680 +38 14 31.908984936   10.41 9.99     F5V 88 1
44 1SWASP J175207.01+373246.3 V* 17 52 07.0184259768 +37 32 46.237377840   13.114 12.402 12.06 11.603 G 82 1
45 TOI-2124b Pl 17 53 13.0489562760 +37 12 42.586493328           ~ 228 2
46 TOI-2124 * 17 53 13.0489562760 +37 12 42.586493328   12.112 11.592     F8 55 2
47 HAT-P-31 * 18 06 09.0498478464 +26 25 35.989962204   12.02 11.67 11.49   ~ 38 2
48 BD+35 3293b Pl 18 34 31.6252443960 +35 39 41.491899468           ~ 126 1
49 BD+35 3293 V* 18 34 31.6252443960 +35 39 41.491899468   11.07 10.63 10.52   F7V 143 1
50 Kepler-1 Em* 19 07 14.0375836512 +49 18 59.091482160   11.85 11.25     G0V 195 2
51 Kepler-1B * 19 07 14.113 +49 18 58.29           K4.5-6 23 1
52 BD+47 2846 Er* 19 28 59.3538826128 +47 58 10.217007804   10.97 10.48     F6V 343 1
53 BD+47 2846b Pl 19 28 59.3538826128 +47 58 10.217007804           ~ 415 1
54 BD+47 2936 EB* 19 50 50.2472976936 +48 04 51.101390496       8.8   K4V 359 1
55 HD 351766 * 20 12 46.8865572432 +18 06 17.402572008   10.81 10.40 10.181   F8 40 1
56 WASP-2 V* 20 30 54.1282355304 +06 25 46.341284844   13 11.98     K1.5 157 1
57 WASP-2B * 20 30 54.179 +06 25 46.18           M0-1.5 23 1
58 HD 197286 PM* 20 44 10.2208462488 -39 13 30.855881604   9.98 9.50     F5V 91 1
59 HAT-P-17 PM* 21 38 08.7310010424 +30 29 19.446386748   11.33 10.38 10.24   G0 85 1
60 BD+34 4779 PM* 22 52 09.8636387352 +35 26 49.608422844   10.77 10.36 10.15   F8V 91 1
61 WASP-10 V* 23 15 58.3006181424 +31 27 46.296056268   12.4   12.03   K5V 100 1
62 WASP-4 PM* 23 34 15.0857248317 -42 03 41.047972591   13.51 12.48 11.9   G7V 196 1
63 BD+41 4831 * 23 39 05.8102996968 +42 27 57.505293900   10.88 10.47     F8V 98 1
64 CD-35 16019 PM* 23 59 36.0711872328 -35 01 52.923618408   10.49 9.87 9.91   G6 139 0

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