ON THE RELATIONSHIP BETWEEN DEBRIS DISKS AND PLANETS
ON THE RELATIONSHIP BETWEEN DEBRIS DISKS AND PLANETS
复制标题
论碎片盘与行星之间的关系
DOI：
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发表时间：
2009
期刊：
影响因子：
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通讯作者：
P. Ábrahám
中科院分区：
文献类型：
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作者：
Á. Kóspál;D. Ardila;A. Mo'or;P. Ábrahám
碎片盘中的灰尘是由星子之间的碰撞产生的。这些星子的存在是行星形成过程的结果，但碎片盘和行星之间的关系尚未明确建立。在这里，我们分析了 150 颗行星恒星的 Spitzer/MIPS 24 和 70μm 数据，并将这些恒星周围碎片盘的发生率与 118 颗恒星周围的行星样本进行了比较，在这些恒星周围已搜索过但未发现行星。它们共同构成了有史以来解决这个问题的最大样本。生存分析技术的使用使我们能够解释 70μm 处的大量未检测到的情况。我们在有行星的恒星周围发现了 10 个新的碎片盘，在没有已知行星的恒星周围发现了一个新的碎片盘。我们发现，有行星的恒星中碎片盘的发生率略高于没有行星的恒星，并且两个样本中碎片盘的平均亮度没有显着差异。我们的结论是，通过当前的径向速度技术检测到的行星的存在并不能很好地预测在红外波长下检测到的碎片盘的存在。
Dust in debris disks is generated by collisions among planetesimals. The existence of these planetesimals is a consequence of the planet formation process, but the relationship between debris disks and planets has not been clearly established. Here we analyze Spitzer/MIPS 24 and 70 μm data for 150 planet-bearing stars, and compare the incidence of debris disks around these stars with a sample of 118 stars around which planets have been searched for, but not found. Together they comprise the largest sample ever assembled to deal with this question. The use of survival analysis techniques allows us to account for the large number of nondetections at 70 μm. We discovered 10 new debris disks around stars with planets and one around a star without known planets. We found that the incidence of debris disks is marginally higher among stars with planets, than among those without, and that the brightness of the average debris disk is not significantly different in the two samples. We conclude that the presence of a planet that has been detected via current radial velocity techniques is not a good predictor of the presence of a debris disk detected at infrared wavelengths.
影响因子：
3.2
作者：
V. Mannings;A. Boss;S. Russell
通讯作者：
V. Mannings;A. Boss;S. Russell