AU Microscopii (AU Mic) is the second closest (d = 9.79 parsec) pre-main sequence (22 Myr) star. AU Mic possesses a relatively rare and spatially resolved edge-on debris disk extending from ~35–210 astronomical units from the star, and with clumps exhibiting non-Keplerian motion . Detection of newly-formed planets around such a star is challenged by the presence of spots, plage, flares and other manifestations of magnetic “activity” on the star. Here we report the discovery of a planet transiting AU Mic. The transiting planet, AU Mic b, has an orbital period of 8.47 days, an orbital distance of 0.06 astronomical units, a radius of 0.4 Jupiter radii, and a mass less than 0.18 Jupiter masses at 3-σ confidence. This very young, nearby planet represents an unparalleled opportunity to study its atmosphere and its interaction with the host star at a very early stage in its evolution.

A planet within the debris disk around the pre-main sequence star AU Mic

V. Roccatagliata;
2020-01-01

Abstract

AU Microscopii (AU Mic) is the second closest (d = 9.79 parsec) pre-main sequence (22 Myr) star. AU Mic possesses a relatively rare and spatially resolved edge-on debris disk extending from ~35–210 astronomical units from the star, and with clumps exhibiting non-Keplerian motion . Detection of newly-formed planets around such a star is challenged by the presence of spots, plage, flares and other manifestations of magnetic “activity” on the star. Here we report the discovery of a planet transiting AU Mic. The transiting planet, AU Mic b, has an orbital period of 8.47 days, an orbital distance of 0.06 astronomical units, a radius of 0.4 Jupiter radii, and a mass less than 0.18 Jupiter masses at 3-σ confidence. This very young, nearby planet represents an unparalleled opportunity to study its atmosphere and its interaction with the host star at a very early stage in its evolution.
2020
Plavchan, Peter; Barclay, Tom; Gagne, Jonathan; Gao, Peter; Cale, Bryson; Matzko, William; Dragomir, Diana; Quinn, Sam; Feliz, Dax; Stassun, Keivan; Crossfield, Ian J. M.; Berardo, David A.; W Latham, David; Tieu, Ben; Anglada-Escude, Guillem; Ricker, George; Vanderspek, Roland; Seager, Sara; Winn, Joshua N.; Jenkins, Jon M.; Rinehart, Stephen; Krishnamurthy, Akshata; Dynes, Scott; Doty, John; Adams, Fred; A Afanasev, Dennis; Beichman, Chas; Bottom, Mike; Bowler, Brendan P.; Brinkworth, Carolyn; Brown, Carolyn J.; Cancino, Andrew; Ciardi, David R.; Clampin, Mark; Clark, Jake T.; Collins, Karen; Davison, Cassy; Foreman-Mackey, Daniel; Furlan, Elise; Gaidos, Eric; Geneser, Claire; Giddens, Frank; Gilbert, Emily; Hall, Ryan; Hellier, Coel; Henry, Todd; Horner, Jonathan; Howard, Andrew W.; Huang, Chelsea; Huber, Joseph; R Kane, Stephen; Kenworthy, Matthew; Kielkopf, John; Kipping, David; Klenke, Chris; Kruse, Ethan; Latouf, Natasha; Lowrance, Patrick; Mennesson, Bertrand; Mengel, Matthew; Mills, Sean M.; Morton, Tim; Narita, Norio; Newton, Elisabeth; Nishimoto, America; Okumura, Jack; Palle, Enric; Pepper, Joshua; Quintana, Elisa V.; Roberge, Aki; Roccatagliata, V.; Schlieder, Joshua E.; Tanner, Angelle; Teske, Johanna; Tinney, C. G.; Vanderburg, Andrew; von Braun Bernie Walp, Kaspar; Wang, Jason; Xuesong Wang, Sharon; Weigand, Denise; White, Russel; Wittenmyer, Robert A.; Wright, Duncan J.; Youngblood, Allison; Zhang, Hui; Zilberman, Perri
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11568/1029808
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