arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1402.6534astro-ph.EP
收藏

开普勒多行星候选者的验证。III:光变曲线分析和数百个新的多行星系统的公布

Validation of Kepler's Multiple Planet Candidates. III: Light Curve Analysis & Announcement of Hundreds of New Multi-planet Systems

Jason F. Rowe, Stephen T. Bryson, Geoffrey W. Marcy, Jack J. Lissauer, Daniel Jontof-Hutter, Fergal Mullally, Ronald L. Gilliland, Howard Issacson, Eric Ford, S… 展开作者

Jason F. Rowe, Stephen T. Bryson, Geoffrey W. Marcy, Jack J. Lissauer, Daniel Jontof-Hutter, Fergal Mullally, Ronald L. Gilliland, Howard Issacson, Eric Ford, Steve B. Howell, William J. Borucki, Michael Haas, Daniel Huber, Jason H. Steffen, Susan E. Thompson, Elisa Quintana, Thomas Barclay, Martin Still, Jonathan Fortney, T. N. Gautier, Roger Hunter, Douglas A. Caldwell, David R. Ciardi Edna Devore, William Cochran, Jon Jenkins, Eric Agol, Joshua A. Carter, John Geary

摘要:

开普勒任务在头两年的航天器数据中发现了超过2500颗系外行星候选者,其中约40%位于候选多行星系统中。多重性的高比率与识别出的假阳性的低比率相结合,表明多行星系统包含非常少的假阳性信号,这是由于其他系统不受目标恒星的引力约束(Lissauer,J. J.,例如,2012,ApJ 750,131)。识别并去除多行星系统中的假阳性,留下预期具有小于1%的假阳性率的候选多行星凌日系统的剩余群体。我们提供了一个包含851颗行星的340个行星系的样本,这些行星被验证为大大优于99%的置信水平;其中绝大多数以前没有被验证为行星。我们预计~2个未确认的假阳性,使我们的行星样本非常可靠。我们提出的基本行星性质的基础上,我们的样品开普勒光变曲线和地面光谱和高分辨率成像的综合分析。由于我们不需要光谱学或高分辨率成像进行验证,我们推导出的行星系的一些参数可能是系统性不正确的,这是由于测光孔径中的额外恒星造成的光线稀释。尽管如此,我们的结果几乎使已证实的系外行星数量翻了一番。

英文摘要:

The Kepler mission has discovered over 2500 exoplanet candidates in the first two years of spacecraft data, with approximately 40% of them in candidate multi-planet systems. The high rate of multiplicity combined with the low rate of identified false-positives indicates that the multiplanet systems contain very few false-positive signals due to other systems not gravitationally bound to the target star (Lissauer, J. J., et al., 2012, ApJ 750, 131). False positives in the multi- planet systems are identified and removed, leaving behind a residual population of candidate multi-planet transiting systems expected to have a false-positive rate less than 1%. We present a sample of 340 planetary systems that contain 851 planets that are validated to substantially better than the 99% confidence level; the vast majority of these have not been previously verified as planets. We expect ~2 unidentified false-positives making our sample of planet very reliable. We present fundamental planetary properties of our sample based on a comprehensive analysis of Kepler light curves and ground-based spectroscopy and high-resolution imaging. Since we do not require spectroscopy or high-resolution imaging for validation, some of our derived parameters for a planetary system may be systematically incorrect due to dilution from light due to additional stars in the photometric aperture. None the less, our result nearly doubles the number of verified exoplanets.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑