2021ApJ...916L...1A

Query : 2021ApJ...916L...1A

2021ApJ...916L...1A - Astrophys. J., 916, L1-L1 (2021/July-3)

A preponderance of perpendicular planets.

ALBRECHT S.H., MARCUSSEN M.L., WINN J.N., DAWSON R.I. and KNUDSTRUP E.

Abstract (from CDS):

Observing the Rossiter-McLaughlin effect during a planetary transit allows the determination of the angle λ between the sky projections of the star's spin axis and the planet's orbital axis. Such observations have revealed a large population of well-aligned systems and a smaller population of misaligned systems, with values of λ ranging up to 180°. For a subset of 57 systems, we can now go beyond the sky projection and determine the 3D obliquity ψ by combining the Rossiter-McLaughlin data with constraints on the line-of-sight inclination of the spin axis. Here we show that the misaligned systems do not span the full range of obliquities; they show a preference for nearly perpendicular orbits (ψ = 80°-125°) that seems unlikely to be a statistical fluke. If confirmed by further observations, this pile-up of polar orbits is a clue about the unknown processes of obliquity excitation and evolution.

Abstract Copyright: © 2021. The American Astronomical Society. All rights reserved.

Journal keyword(s): Exoplanet dynamics - Exoplanet tides - Stellar rotation - Exoplanet astronomy - Planet hosting stars

Simbad objects: 57

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Number of rows : 57
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 WASP-32 * 00 15 50.8077262344 +01 12 01.588900896   12.06 11.26 11.63 10.89 ~ 50 1
2 BD+01 316 PM* 01 46 31.8575937456 +02 42 02.030065560   10.13 9.52     F7 75 0
3 HD 15082 EB* 02 26 51.0582618096 +37 33 01.736482032   8.41 8.14     kA5hA8mF4 198 1
4 WASP-152 * 04 10 40.8827225832 +24 24 06.303089484   13.16 12.56     K2V 22 0
5 K2-25 Er* 04 13 05.6131374072 +15 14 52.018080576   15.81 15.56 13.72   M4.5V 73 0
6 K2-267 * 05 15 40.7538913680 +16 16 43.517365572   12.07 11.24     ~ 9 0
7 * pi. Men PM* 05 37 09.8868446714 -80 28 08.834553264   6.25 5.67     G0V 325 1
8 CPD-64 484 EB* 05 48 33.5933253192 -63 59 18.388382028   10.73 10.21 9.93 9.742 ~ 63 1
9 BD+73 323 * 06 19 10.3709236992 +73 49 39.587215008   10.68 10.25     F5 18 0
10 WASP-12 EB* 06 30 32.7966092352 +29 40 20.263502460   12.14 11.57     G0V 309 1
11 CoRoT-18 * 06 32 41.3776636176 -00 01 53.725599732   15.8 15.00 14.9 14.05 ~ 47 2
12 CD-38 3220 EB* 07 10 24.0604565856 -39 05 50.571250476   11.00 10.51     F6V 96 0
13 HAT-P-20 PM* 07 27 39.9488720808 +24 20 11.516231112   12.58 11.35 11.00   K3V 73 1
14 BD+50 1471 PM* 07 48 06.4723053776 +50 13 32.920598923   12.002 11.138 10.669 10.243 G9V 173 1
15 HD 63433 BY* 07 49 55.0606576176 +27 21 47.457467316   7.59 6.91     G5V 156 0
16 BD+14 1881 Pe* 08 22 28.2046820904 +13 44 07.143774288   9.53 9.23   8.948 kA1hA5mA9Si 36 0
17 BD+02 2056 * 08 44 25.7031511896 +01 51 36.105474888   11.64 10.83     K1 32 0
18 BD-20 2976 EB* 09 39 30.0861120120 -20 58 56.881266564   9.94 9.35     F9V 22 0
19 HD 85628 * 09 50 19.2009107592 -66 06 49.897904652   8.40 8.19     A3V 20 0
20 WASP-19 EB* 09 53 40.0765648584 -45 39 33.057187596   13.05 12.31 12.12 11.35 G8V 181 2
21 WASP-43 PM* 10 19 38.0088913464 -09 48 22.605801336   13.782 12.490 12.022 11.10 K7V 149 2
22 HD 233731 PM* 10 22 43.5923328528 +50 07 42.062425248   10.62 9.76 9.44   G5 50 1
23 Ross 905 PM* 11 42 11.0933350978 +26 42 23.650782778   12.06 10.613 10.272 8.24 M3V 645 1
24 BD+07 2474 EB* 11 43 38.016288 +06 33 49.41900   11.15 10.41 10.34   G5 36 0
25 HATS-2 EB* 11 46 57.3702458424 -22 33 46.817348148   14.53 13.62 13.40   ~ 42 1
26 HAT-P-36 EB* 12 33 03.9061156728 +44 54 55.196024616   12.97 12.15 12.27   ~ 52 1
27 WASP-107 PM* 12 33 32.8441110816 -10 08 46.225572324   14.62 11.47     K7V 65 0
28 CD-29 9873 * 12 42 28.4949559632 -30 38 23.529045948   12.36 11.63 11.39 10.78 G8V 64 1
29 CD-34 8618 * 13 04 10.5339280776 -35 32 58.322148612   10.93 10.52     ~ 16 0
30 Qatar 2 PM* 13 50 37.4100326640 -06 48 14.421574044   14.0   13.45   K5V 67 1
31 HD 133112 PM* 15 02 44.8678907928 -03 01 52.986571896   6.788 6.618     A4/5IV/V 60 0
32 BD-19 4173 ** 15 39 25.8625321656 -20 11 55.770493200   11.68 11.11     ~ 27 0
33 Kepler-8 Ro* 18 45 09.1489991376 +42 27 03.891327156           F6V 107 1
34 Kepler-9 Er* 19 02 17.7544327200 +38 24 03.176851896     13.9 13.791   G2 190 1
35 Kepler-25 Er* 19 06 33.2141354736 +39 29 16.358725104   11.337 10.623 10.622   F6 154 1
36 BD+46 2629 EB* 19 07 53.104944 +46 52 06.00420   10.12 9.70 9.80   kA2hA5mA7(IV)m: 157 0
37 Kepler-63 Er* 19 16 54.2861367672 +49 32 53.451062520   12.449 11.733 11.701   G5 114 1
38 CoRoT-2 * 19 27 06.4944378024 +01 23 01.359897468   13.422 12.568 12.204 11.49 G7V+K9V 249 2
39 BD+47 2846 Er* 19 28 59.3538826128 +47 58 10.217007804   10.97 10.48     F6V 306 2
40 Kepler-448 Er* 19 49 48.8933114592 +41 00 39.630681720   11.73 11.51     F5IV 72 0
41 BD+47 2936 EB* 19 50 50.2472976936 +48 04 51.101390496       8.8   K4V 300 2
42 Kepler-17 Ro* 19 53 34.8643397568 +47 48 54.049530564   14.6   13.6   G5V 151 1
43 HD 189733 BY* 20 00 43.7129433648 +22 42 39.073143456 9.241 8.578 7.648 7.126 6.68 K2V 895 1
44 Qatar 1 PM* 20 13 31.6172746704 +65 09 43.492226796   13.90 12.84 12.65 11.71 ~ 61 1
45 HD 195689 SB* 20 31 26.3534153736 +39 56 19.773037500   7.59 7.56     A0 120 0
46 HD 197286 PM* 20 44 10.2208462488 -39 13 30.855881604   9.98 9.50     F5V 80 1
47 HD 197481 BY* 20 45 09.5324974119 -31 20 27.237889841   10.05 8.627 9.078 6.593 M1VeBa1 1152 0
48 CD-34 14724A EB* 20 55 07.9443524136 -34 08 08.007489384   10.74 10.05 10.17 9.774 F8 68 0
49 BD-05 5432 PM* 21 00 06.1968214728 -05 05 40.034944176   10.93 9.87     ~ 68 1
50 HD 209458 V* 22 03 10.7727465312 +18 53 03.549393384   8.21 7.63     F9V 1113 1
51 TRAPPIST-1 LM* 23 06 29.3684948589 -05 02 29.037301866     18.798 16.466 14.024 M7.5e 994 0
52 WASP-6 * 23 12 37.7368282608 -22 40 26.273805024   12.90 11.91     G8V 94 1
53 WASP-52 * 23 13 58.7576098848 +08 45 40.572305352   12.9 12.0 12.03   K2V 84 1
54 WASP-4 EB* 23 34 15.0857248317 -42 03 41.047972591   13.51 12.48 11.9   G7V 176 1
55 HD 222259A RS* 23 39 39.4808078664 -69 11 44.707735104   9.161 8.226 9.28 7.352 G6V 144 0
56 WASP-5 EB* 23 57 23.7564672192 -41 16 37.743700800   12.808 12.146 12.058 11.44 G4V 120 1
57 CD-35 16019 PM* 23 59 36.0711872328 -35 01 52.923618408   10.49 9.87 9.91   G6 111 0

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