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A possible alignment between the orbits of planetary systems and their visual binary companions
Christian, Sam
Vanderburg, Andrew
Becker, Juliette
Yahalomi, Daniel
Pearce, Logan
Zhou, George
Collins, Karen
Kraus, Adam
Stassun, Keivan
Beurs, Zoe de
Ricker, George
Vanderspek, Roland
Latham, David
Winn, Joshua
Seager, S.
Jenkins, Jon
Abe, Lyu
Agabi, Karim
Amado, Pedro
Baker, David
Barkaoui, Khalid
Benkhaldoun, Zouhair
Benni, Paul
Berberian, John
Berlind, Perry
Bieryla, Allyson
Esparza Borges, Emma
Bowen, Michael
Brown, Peyton
Buchhave, Lars
Burke, Christopher
Buttu, Marco
Cadieux, Charles
Caldwell, Douglas
Charbonneau, David
Chazov, Nikita
Chimaladinne, Sudhish
Collins, Kevin
Combs, Deven
Conti, Dennis
Crouzet, Nicolas
Leon, Jerome de
Deljookorani, Shila
Diamond, Brendan
Doyon, René
Dragomir, Diana
Dransfield, Georgina
Essack, Zahra
Evans, Phil
Fukui, Akihiko
Gan, Tianjun
Esquerdo, Gilbert
Gillon, Michaël
Girardin, Eric
Guerra, Pere
Guillot, Tristan
Habich, Eleanor
Henriksen, Andreea
Hoch, Nora
Isogai, Keisuke
Jehin, Emmanuël
Jensen, Eric
Johnson, Marshall
Livingston, John
Kielkopf, John
Kim, Kingsley
Kawauchi, Kiyoe
Krushinsky, Vadim
Kunzle, Veronica
Laloum, Didier
Leger, Dominic
Lewin, Pablo
Mallia, Franco
Massey, Bob
Mori, Mayuko
McLeod, Kim
Mékarnia, Djamel
Mireles, Ismael
Mishevskiy, Nikolay
Tamura, Motohide
Murgas, Felipe
Narita, Norio
Naves, Ramon
Nelson, Peter
Osborn, Hugh
Palle, Enric
Parviainen, Hannu
Plavchan, Peter
Pozuelos, Francisco
Relles, Howard
Rodríguez López, Cristina
Quinn, Samuel
Schmider, Francois
Schlieder, Joshua
Schwarz, Richard
Shporer, Avi
Sibbald, Laurie
Srdoc, Gregor
Stibbards, Caitlin
Stickler, Hannah
Suarez, Olga
Stockdale, Chris
Tan, Thiam
Terada, Yuka
Triaud, Amaury
Tronsgaard, Rene
Waalkes, William
Wang, Gavin
Watanabe, Noriharu
Wenceslas, Marie
Wingham, Geof
Wittrock, Justin
Ziegler, Carl
The Astronomical Journal
2022
Astronomers do not have a complete picture of the effects of wide-binary companions (semimajor axes greater than 100 au) on the formation and evolution of exoplanets. We investigate these effects using new data from Gaia Early Data Release 3 and the Transiting Exoplanet Survey Satellite mission to characterize wide-binary systems with transiting exoplanets. We identify a sample of 67 systems of transiting exoplanet candidates (with well-determined, edge-on orbital inclinations) that reside in wide visual binary systems. We derive limits on orbital parameters for the wide-binary systems and measure the minimum difference in orbital inclination between the binary and planet orbits. We determine that there is statistically significant difference in the inclination distribution of wide-binary systems with transiting planets compared to a control sample, with the probability that the two distributions are the same being 0.0037. This implies that there is an overabundance of planets in binary systems whose orbits are aligned with those of the binary. The overabundance of aligned systems appears to primarily have semimajor axes less than 700 au. We investigate some effects that could cause the alignment and conclude that a torque caused by a misaligned binary companion on the protoplanetary disk is the most promising explanation.
Star-planet interactions
Circumstellar disks
Exoplanet evolution
Wide binary stars
Visual binary stars
Ciencias físicas