2017A&A...602A..87M


Query : 2017A&A...602A..87M

2017A&A...602A..87M - Astronomy and Astrophysics, volume 602A, 87-87 (2017/6-1)

Eccentricity in planetary systems and the role of binarity. Sample definition, initial results, and the system of HD 211847.

MOUTOU C., VIGAN A., MESA D., DESIDERA S., THEBAULT P., ZURLO A. and SALTER G.

Abstract (from CDS):

We explore the multiplicity of exoplanet host stars with high-resolution images obtained with VLT/SPHERE. Two different samples of systems were observed: one containing low-eccentricity outer planets, and the other containing high-eccentricity outer planets. We find that 10 out of 34 stars in the high-eccentricity systems are members of a binary, while the proportion is 3 out of 27 for circular systems. Eccentric-exoplanet hosts are, therefore, significantly more likely to have a stellar companion than circular-exoplanet hosts. The median magnitude contrast over the 68 data sets is 11.26 and 9.25, in H and K, respectively, at 0.30-arcsec. The derived detection limits reveal that binaries with separations of less than 50au are rarer for exoplanet hosts than for field stars. Our results also imply that the majority of high-eccentricity planets are not embedded in multiple stellar systems (24 out of 34), since our detection limits exclude the presence of a stellar companion. We detect the low-mass stellar companions of HD 7449 and HD 211847, both members of our high-eccentricity sample. HD 7449B was already detected and our independent observation is in agreement with this earlier work. HD 211847's substellar companion, previously detected by the radial velocity method, is actually a low-mass star seen face-on. The role of stellar multiplicity in shaping planetary systems is confirmed by this work, although it does not appear as the only source of dynamical excitation.

Abstract Copyright: © ESO, 2017

Journal keyword(s): binaries: visual - techniques: high angular resolution - planetary systems - planetary systems

Simbad objects: 76

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Number of rows : 76
N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2023
#notes
1 HD 1237 PM* 00 16 12.6780107483 -79 51 04.244506480 7.692 7.335 6.578     G8V 222 1
2 HD 1461 PM* 00 18 41.8676757921 -08 03 10.803829898   7.14 6.46     G3VFe0.5 354 1
3 * ksi Cas SB* 00 42 03.8922075864 +50 30 45.120403944 4.05 4.71 4.81 4.82 4.94 B2V 138 0
4 HD 4113 PM* 00 43 12.5955916128 -37 58 57.477720936   8.61 7.88     G5V 90 1
5 HD 4208 PM* 00 44 26.6506707202 -26 30 56.455527913   8.46 7.79     G7VFe-1CH-0.5 192 1
6 HD 7449b Pl 01 14 29.3222250437 -05 02 50.614804562           ~ 23 1
7 HD 7449 PM* 01 14 29.3222869752 -05 02 50.614788804   8.08 7.48     F9.5V 105 2
8 HD 8624 SB* 01 25 38.5499166648 +31 32 46.194343548       7.5   G0 40 0
9 HD 10180 * 01 37 53.5772394024 -60 30 41.482108548   7.95 7.32     G1V 186 2
10 HD 11964 PM* 01 57 09.6074243168 -10 14 32.732533622   7.25 6.42     G9VCN+1 174 1
11 * e Eri PM* 03 19 55.6509122226 -43 04 11.215188426 5.20 4.98 4.27 3.65 3.25 G6V 428 1
12 HD 20782 PM* 03 20 03.5777546706 -28 51 14.660358176   8.03 7.38     G1.5V 194 1
13 * eps Eri BY* 03 32 55.8444911587 -09 27 29.739493865 5.19 4.61 3.73 3.00 2.54 K2V 1837 1
14 HD 23079 PM* 03 39 43.0959995592 -52 54 57.017412036   7.68 7.11     F9.5V 164 1
15 HD 28254 PM* 04 24 50.7049876176 -50 37 19.882049844   8.439 7.684 8.52   G5V 53 1
16 HD 30562 PM* 04 48 36.3850851388 -05 40 26.557737782   6.40 5.77     G2IV 245 1
17 HD 33283 PM* 05 08 01.0123084872 -26 47 50.894113344 8.870 8.640 8.040     G3/5V 89 1
18 * pi. Men PM* 05 37 09.8868446714 -80 28 08.834553264   6.25 5.67     G0V 300 1
19 HD 38801 PM* 05 47 59.1754801416 -08 19 39.720746928   9.14 8.27     G8IV 49 1
20 BD-06 1339 PM* 05 53 00.2846861073 -05 59 41.441196105 12.27 11.041 9.693 8.855 8.099 K7V/M0V 85 1
21 HD 41004 ** 05 59 49.6501762752 -48 14 22.888358520   9.49 8.65     K1IV 171 1
22 HD 43197 PM* 06 13 35.6615476152 -29 53 50.151597432   9.79 8.95     G8/K0IV/V 64 1
23 HD 44219 PM* 06 20 14.3231722488 -10 43 30.030733596   8.36 7.70     G3V 65 1
24 HD 47186 PM* 06 36 08.7879310512 -27 37 20.268367464   8.36 7.63     G6V 133 1
25 V* QY Aur SB* 07 10 01.8335758745 +38 31 46.086503300   13.26 11.52 11.12   M4.5Ve 222 0
26 HD 60532 PM* 07 34 03.1805638968 -22 17 45.843172440 5.02 4.94 4.39     F6IV-V 217 1
27 HD 65216 PM* 07 53 41.3195697504 -63 38 50.353461420   8.65 7.96     G5V 131 1
28 HD 66428 PM* 08 03 28.6676662536 -01 09 45.758091420   8.97 8.26     G8IV(+G) 128 1
29 V* CS Pyx BY* 08 36 23.0165447400 -30 02 15.446225796   8.84 8.06     G8IV-VFe+0.5 154 1
30 HD 75289 PM* 08 47 40.3893739728 -41 44 12.455319264 7.04 6.94 6.36     F9VFe+0.3 272 1
31 HD 76700 PM* 08 53 55.5161171358 -66 48 03.575953228   8.88 8.13     G6V 123 1
32 HD 82943 PM* 09 34 50.7353072232 -12 07 46.369202196   7.17 6.53     F9VFe+0.5 451 2
33 HD 83443 PM* 09 37 11.8275201048 -43 16 19.933774320   9.03 8.24     K0/1V+G(III) 221 1
34 HD 85390 PM* 09 50 02.4966438384 -49 47 24.959191848   9.40 8.55     K1.5V 78 1
35 HD 86081 PM* 09 56 05.9184616896 -03 48 30.325874184   9.34 8.70     G1V 78 1
36 HD 86226 PM* 09 56 29.8441909920 -24 05 57.799322988   8.563 7.93 7.71   G2V 70 1
37 HD 86264 PM* 09 56 57.8387817672 -15 53 42.429141024   7.92 7.41     F7V 65 1
38 HD 92788 PM* 10 42 48.5278074048 -02 11 01.525313004   8.01 7.30     G6V 224 1
39 HD 96167 PM* 11 05 15.0688264032 -10 17 28.699238904   8.82 8.08     G3V 60 1
40 HD 98649 PM* 11 20 51.7685457816 -23 13 02.429523660   8.646 7.99 7.75 8.26 G3/5V 65 1
41 HD 104067 PM* 11 59 10.0088449029 -20 21 13.612067116 9.683 8.897 7.921 7.369 6.913 K2V 117 1
42 HD 106515A PM* 12 15 06.5667197808 -07 15 26.353003536   8.79 7.97     G5V 26 1
43 HD 106515 ** 12 15 06.56688 -07 15 26.3497           K0-V 59 0
44 HD 108147 PM* 12 25 46.2673666032 -64 01 19.516186956   7.532 6.994     F8/G0V 173 1
45 HD 109749 PM* 12 37 16.3785050928 -40 48 43.626163320   8.864 8.208 8.96   G3V 91 1
46 HD 117618 PM* 13 32 25.5556238328 -47 16 16.913213976   7.77 7.17     G0V 121 1
47 HD 121504 PM* 13 57 17.2387351056 -56 02 24.159656364   8.12 7.52     G2V 166 1
48 HD 129445 PM* 14 46 03.0652077696 -68 45 45.879649596   9.57 8.79     G6V 45 1
49 HD 134060 PM* 15 10 44.7430146168 -61 25 20.360681976   6.91 6.285 6.16 8.68 G0VFe+0.4 123 1
50 HD 142415 PM* 15 57 40.7919331560 -60 12 00.922058568   7.94 7.34     G1V 107 1
51 HD 142022 PM* 16 10 15.0289506857 -84 13 53.810842936   8.47 7.69     G9IV-V 104 1
52 HD 148156 PM* 16 28 17.2846934448 -46 19 03.462605040   8.26 7.69     G0/2V 72 1
53 HD 150433 PM* 16 41 08.2146248318 -02 51 26.201633303   7.861 7.22 6.80 8.70 G5V 112 1
54 HD 154672 PM* 17 10 04.9107827400 -56 26 57.370706592   8.91 8.20     G3IV 57 1
55 HD 157172 PM* 17 22 34.5658137312 -19 36 58.252609224   8.637 7.86 7.60 8.58 G8.5V 77 1
56 HD 159868 PM* 17 38 59.5268792544 -43 08 43.842381468   7.96 7.24     G5V 134 1
57 HD 168443 PM* 18 20 03.9332862096 -09 35 44.614653900   7.62 6.92     G6V 299 1
58 HD 179949 BY* 19 15 33.2300695008 -24 10 45.671448072   6.772 6.237     F8V 389 1
59 HD 181433 PM* 19 25 09.5666936172 -66 28 07.676956827   9.42 8.38     K3III-IV 119 1
60 BD+47 2846 Er* 19 28 59.3538826128 +47 58 10.217007804   10.97 10.48     F6V 290 2
61 HD 187085 PM* 19 49 33.9666332064 -37 46 49.973441628   7.78 7.21     G0V 91 1
62 HD 192263 BY* 20 13 59.8455790536 -00 52 00.769626768 9.447 8.724 7.767 7.231 6.771 K1/2V 232 1
63 HD 196885 PM* 20 39 51.8748403032 +11 14 58.700231052   6.92 6.385 6.32   F8V 184 1
64 * mu.02 Oct PM* 20 41 44.1016298400 -75 21 02.883008592   7.05 6.44     G0V 56 1
65 HD 203949 HB* 21 26 22.8744937632 -37 49 45.949824840   6.826 5.620     K2III 43 0
66 HD 210277 PM* 22 09 29.8657847411 -07 32 55.162082226   8.85 8.57 7.36   G8V 325 1
67 HD 211847b Pl? 22 20 55.7381994126 -41 25 48.395068615           ~ 3 0
68 HD 211847 PM* 22 20 55.7384451240 -41 25 48.384652332   9.27 8.62     G5V 31 0
69 HD 211487 * 22 26 02.9029227480 -83 30 57.075436368   8.48 8.18     F0III 13 0
70 HD 212301 PM* 22 27 30.9220205424 -77 43 04.526779008   8.31 7.76     F8V 96 1
71 V* EZ Aqr Er* 22 38 33.576000 -15 17 59.75700 15.762 14.33 12.38 12.12 8.677 M5V 296 1
72 HD 215497 PM* 22 46 36.7539769920 -56 35 58.326725148   9.92 8.95     K3V 55 1
73 HD 217107 ** 22 58 15.5408995872 -02 23 43.383234768   6.919 6.163     G8IV/V 354 1
74 HD 219077 PM* 23 14 06.5877117106 -62 42 00.008075788   6.91 6.12     G8V+ 108 1
75 * psi01 Aqr PM* 23 15 53.4940495770 -09 05 15.844964053 6.37 5.36 4.25 3.46 2.90 K1-IIIFe-0.5 237 1
76 HD 222582 PM* 23 41 51.5300932008 -05 59 08.729137104   8.34 7.69     G5V 226 2

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2023.02.04-09:41:01

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