A FIRST COMPARISON OF KEPLER PLANET CANDIDATES IN SINGLE AND MULTIPLE SYSTEMS
A FIRST COMPARISON OF KEPLER PLANET CANDIDATES IN SINGLE AND MULTIPLE SYSTEMS
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DOI：
10.1088/2041-8205/732/2/l24
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发表时间：
2011-03
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通讯作者：
D. Latham;J. Rowe;S. Quinn;N. Batalha;W. Borucki;T. Brown;S. Bryson;L. Buchhave;D. Caldwell;J. Carter;J. Christiansen;D. Ciardi;W. Cochran;E. Dunham;D. Fabrycky;E. Ford;T. Gautier;R. Gilliland;M. Holman;S. Howell;K. Ibrahim;H. Isaacson;J. Jenkins;D. Koch;J. Lissauer;G. Marcy;E. Quintana;D. Ragozzine;D. Sasselov;Avi Shporer;J. Steffen;W. Welsh;B. Wohler
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作者：
D. Latham;J. Rowe;S. Quinn;N. Batalha;W. Borucki;T. Brown;S. Bryson;L. Buchhave;D. Caldwell;J. Carter;J. Christiansen;D. Ciardi;W. Cochran;E. Dunham;D. Fabrycky;E. Ford;T. Gautier;R. Gilliland;M. Holman;S. Howell;K. Ibrahim;H. Isaacson;J. Jenkins;D. Koch;J. Lissauer;G. Marcy;E. Quintana;D. Ragozzine;D. Sasselov;Avi Shporer;J. Steffen;W. Welsh;B. Wohler
在这封信中，我们概述了在开普勒数据的前四个月中发现的具有多个候选行星的丰富的星系群。这次倍数普查包括115个目标，这些目标显示了两个候选行星，其中45个有三个，八个有四个，一个有五个和六个，总共有170个系统，408个候选行星。与只有一个候选的827个系统相比，倍数占系统总数的17%，占所有候选行星的三分之一。我们比较了成双成对的考生和单身考生的特征。正如预期的那样，由于黯然失色的二进制文件而导致的误报对于倍数来说要少得多。单打和多打都是由比海王星小的行星主导的；69+2−为3%的单打和86+2−为5%的多星。这一结果表明，拥有多颗凌日行星的系统不太可能包括一颗凌日巨行星，这表明距离较近的巨行星往往会扰乱平坦系统中小行星的轨道倾斜，甚至可能从一开始就阻止此类系统的形成。
In this Letter, we present an overview of the rich population of systems with multiple candidate transiting planets found in the first four months of Kepler data. The census of multiples includes 115 targets that show two candidate planets, 45 with three, eight with four, and one each with five and six, for a total of 170 systems with 408 candidates. When compared to the 827 systems with only one candidate, the multiples account for 17% of the total number of systems, and one-third of all the planet candidates. We compare the characteristics of candidates found in multiples with those found in singles. False positives due to eclipsing binaries are much less common for the multiples, as expected. Singles and multiples are both dominated by planets smaller than Neptune; 69+2 − 3% for singles and 86+2 − 5% for multiples. This result, that systems with multiple transiting planets are less likely to include a transiting giant planet, suggests that close-in giant planets tend to disrupt the orbital inclinations of small planets in flat systems, or maybe even prevent the formation of such systems in the first place.