Plavchan, P, Barclay, T, Gagné, J, Gao, P, Cale, B, Matzko, W, Dragomir, D, Quinn, S, Feliz, D, Stassun, K, Crossfield, IJM, Berardo, DA, Latham, DW, Tieu, B, Anglada-Escudé, G, Ricker, G, Vanderspek, R, Seager, S, Winn, JN, Jenkins, JM, Rinehart, S, Krishnamurthy, A, Dynes, S, Doty, J, Adams, F, Afanasev, DA, Beichman, C, Bottom, M, Bowler, BP, Brinkworth, C, Brown, CJ, Cancino, A, Ciardi, DR, Clampin, M, Clark, JT, Collins, K, Davison, C, Foreman-Mackey, D, Furlan, E, Gaidos, EJ, Geneser, C, Giddens, F, Gilbert, E, Hall, R, Hellier, C, Henry, T, Horner, J, Howard, AW, Huang, C, Huber, J, Kane, SR, Kenworthy, M, Kielkopf, J, Kipping, D, Klenke, C, Kruse, E, Latouf, N, Lowrance, P, Mennesson, B, Mengel, M, Mills, SM, Morton, T, Narita, N, Newton, E, Nishimoto, A, Okumura, J, Palle, E, Pepper, J, Quintana, EV, Roberge, A, Roccatagliata, V, Schlieder, JE, Tanner, A, Teske, J, Tinney, CG, Vanderburg, A, von Braun, K, Walp, B, Wang, J, Wang, SX, Weigand, D, White, R, Wittenmyer, RA, Wright, DJ, Youngblood, A, Zhang, H and Zilberman, P (2020) A planet within the debris disk around the pre-main-sequence star AU Microscopii. Nature, 582 (7813). 497 - 500. ISSN 0028-0836

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AU Microscopii (AU Mic) is the second closest pre-main-sequence star, at a distance of 9.79 parsecs and with an age of 22 million years1. AU Mic possesses a relatively rare2 and spatially resolved3 edge-on debris disk extending from about 35 to 210 astronomical units from the star4, and with clumps exhibiting non-Keplerian motion5-7. 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 star8,9. Here we report observations of a planet transiting AU Mic. The transiting planet, AU Mic b, has an orbital period of 8.46 days, an orbital distance of 0.07 astronomical units, a radius of 0.4 Jupiter radii, and a mass of less than 0.18 Jupiter masses at 3σ confidence. Our observations of a planet co-existing with a debris disk offer the opportunity to test the predictions of current models of planet formation and evolution.

Item Type: Article
Additional Information: The final version of this article and all relevant information can be found online at;
Subjects: Q Science > Q Science (General)
Q Science > QB Astronomy
Q Science > QB Astronomy > QB460 Astrophysics
Q Science > QB Astronomy > QB799 Stars
Q Science > QD Chemistry
Divisions: Faculty of Natural Sciences > School of Chemical and Physical Sciences
Related URLs:
Depositing User: Symplectic
Date Deposited: 29 Oct 2020 09:59
Last Modified: 29 Oct 2020 09:59

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