杂物盘周围的碎屑盘中的行星Au Microscopii

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杂物盘周围的碎屑盘中的行星Au Microscopii

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

论文作者

Plavchan, Peter, Barclay, Thomas, Gagné, Jonathan, Gao, Peter, Cale, Bryson, Matzko, William, Dragomir, Diana, Quinn, Sam, Feliz, Dax, Stassun, Keivan, Crossfield, Ian J. M., Berardo, David A., Latham, David W., Tieu, Ben, Anglada-Escudé, Guillem, Ricker, George, Vanderspek, Roland, Seager, Sara, Winn, Joshua N., Jenkins, Jon M., Rinehart, Stephen, Krishnamurthy, Akshata, Dynes, Scott, Doty, John, Adams, Fred, Afanasev, Dennis A., 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 J., Geneser, Claire, Giddens, Frank, Gilbert, Emily, Hall, Ryan, Hellier, Coel, Henry, Todd, Horner, Jonathan, Howard, Andrew W., Huang, Chelsea, Huber, Joseph, Kane, Stephen R., 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, Veronica, Schlieder, Joshua E., Tanner, Angelle, Teske, Johanna, Tinney, C. G., Vanderburg, Andrew, von Braun, Kaspar, Walp, Bernie, Wang, Jason, Wang, Sharon Xuesong, Weigand, Denise, White, Russel, Wittenmyer, Robert A., Wright, Duncan J., Youngblood, Allison, Zhang, Hui, Zilberman, Perri

论文摘要

Au Microscopii（AU MIC）是第二次最接近的主序列，距离为9.79 parsecs，年龄为2200万年。 Au Mic具有相对稀有和空间解析的3边缘碎屑盘，从恒星延伸到约35至210个天文单元，并具有表现出非凯伯利亚运动的团块。在恒星上的斑点，斑点，耀斑和其他磁性活性表现的存在挑战，对这种恒星周围新形成的行星的检测受到了挑战。在这里，我们报告了经过澳大利亚行星的观察结果。过渡行星Au MIC B的轨道周期为8.46天，轨道距离为0.07天文学单元，半径为0.4木星半径，质量为3 sigma置信度。我们对行星与碎屑盘共存的观察为测试了当前行星形成和进化的模型的预测提供了机会。

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.

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