A planet within the debris disk around the pre-main-sequence star AU Microscopii
Abstract
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 years. AU Mic possesses a relatively rare and spatially resolved3 edge-on debris disk extending from about 35 to 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 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 3 sigma 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.
Keywords
Cite
@article{arxiv.2006.13248,
title = {A planet within the debris disk around the pre-main-sequence star AU Microscopii},
author = {Peter Plavchan and Thomas Barclay and Jonathan Gagné and Peter Gao and Bryson Cale and William Matzko and Diana Dragomir and Sam Quinn and Dax Feliz and Keivan Stassun and Ian J. M. Crossfield and David A. Berardo and David W. Latham and Ben Tieu and Guillem Anglada-Escudé and George Ricker and Roland Vanderspek and Sara Seager and Joshua N. Winn and Jon M. Jenkins and Stephen Rinehart and Akshata Krishnamurthy and Scott Dynes and John Doty and Fred Adams and Dennis A. Afanasev and Chas Beichman and Mike Bottom and Brendan P. Bowler and Carolyn Brinkworth and Carolyn J. Brown and Andrew Cancino and David R. Ciardi and Mark Clampin and Jake T. Clark and Karen Collins and Cassy Davison and Daniel Foreman-Mackey and Elise Furlan and Eric J. Gaidos and Claire Geneser and Frank Giddens and Emily Gilbert and Ryan Hall and Coel Hellier and Todd Henry and Jonathan Horner and Andrew W. Howard and Chelsea Huang and Joseph Huber and Stephen R. Kane and Matthew Kenworthy and John Kielkopf and David Kipping and Chris Klenke and Ethan Kruse and Natasha Latouf and Patrick Lowrance and Bertrand Mennesson and Matthew Mengel and Sean M. Mills and Tim Morton and Norio Narita and Elisabeth Newton and America Nishimoto and Jack Okumura and Enric Palle and Joshua Pepper and Elisa V. Quintana and Aki Roberge and Veronica Roccatagliata and Joshua E. Schlieder and Angelle Tanner and Johanna Teske and C. G. Tinney and Andrew Vanderburg and Kaspar von Braun and Bernie Walp and Jason Wang and Sharon Xuesong Wang and Denise Weigand and Russel White and Robert A. Wittenmyer and Duncan J. Wright and Allison Youngblood and Hui Zhang and Perri Zilberman},
journal= {arXiv preprint arXiv:2006.13248},
year = {2020}
}
Comments
Nature, published June 24th [author spelling name fix]