2026ApJ...997L..41L


Query : 2026ApJ...997L..41L

2026ApJ...997L..41L - Astrophys. J., 997, L41 (2026/February-1)

Double Hot Jupiter Formation through Mirrored ZLK Migration in Binary Star Systems: The Case of WASP-94.

LIU Y., LU T. and RICE M.

Abstract (from CDS):

To date, only a handful of binary star systems are known with at least one confirmed planet orbiting each star. Such systems, however, offer a unique perspective on the stochasticity intrinsic to planet formation and evolution-particularly in twin binary star systems, which consist of near-equal-mass stars formed contemporaneously in the same birth environment. The WASP-94 system, which includes twin F-type stars, is a striking exemplar of such systems, containing two hot Jupiters: WASP-94 Ab is a transiting, spin-orbit misaligned giant planet with a 4 day orbital period, while WASP-94 Bb is nontransiting and has a tighter 2 day orbital period. In this work, we leverage N-body simulations to show that the current double hot Jupiter configuration of the WASP-94 system can be reproduced through mirrored von Zeipel-Lidov-Kozai migration. The upcoming Gaia astrometric data releases offer the potential to search for additional twin planetary systems, including double cold Jupiter systems that may serve as the progenitors for WASP-94-like configurations.

Abstract Copyright: © 2026. The Author(s). Published by the American Astronomical Society.

Journal keyword(s): Exoplanet astronomy - Binary stars - Exoplanet dynamics - Hot Jupiters - Exoplanet migration - Exoplanet evolution - Exoplanets - Exoplanet systems

Simbad objects: 11

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Number of rows : 11
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 HD 20781 PM* 03 20 02.9428582501 -28 47 01.790465531   9.263 8.44 8.17 8.43 G9.5V 135 1
2 HD 20782 PM* 03 20 03.5777546706 -28 51 14.660358176   8.03 7.38     G1.5V 240 1
3 G 222-3 PM* 04 20 12.6435477456 +84 54 06.276479688   17.030 15.410 15.119   dM5.5 21 0
4 HD 41004 PM* 05 59 49.6501762752 -48 14 22.888358520   9.49 8.62     K1IV 221 1
5 HD 41004Bb Pl 05 59 49.6531151 -48 14 23.428302           ~ 33 1
6 BD+50 1471 PM* 07 48 06.4723053776 +50 13 32.920598923   12.002 11.138 10.669 10.243 G9V 203 1
7 HD 133131 ** 15 03 35.80651 -27 50 27.5520           G2V+G2V 49 0
8 CD-34 14724A PM* 20 55 07.9443524136 -34 08 08.007489384   10.74 10.05 10.17 9.774 F8 94 0
9 NAME CD-34 14724Ab Pl 20 55 07.9443524136 -34 08 08.007489384           ~ 51 0
10 CD-34 14724B PM* 20 55 09.1576722384 -34 08 07.913816448       10.51 10.06 F9 44 0
11 NAME CD-34 14724Bb Pl 20 55 09.1576722384 -34 08 07.913816448           ~ 11 0

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