Transiting Planets with LSST. III. Detection Rate per Year of Operation
Transiting Planets with LSST. III. Detection Rate per Year of Operation
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LSST 凌日行星。
DOI：
10.3847/1538-3881/aa64d1
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发表时间：
2017
期刊：
影响因子：
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通讯作者：
K. Stassun
中科院分区：
文献类型：
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作者：
S. Jacklin;M. Lund;J. Pepper;K. Stassun
大型综合巡天望远镜（LSST）将产生大约10亿颗恒星的光变曲线。我们以前的工作已经表明，在LSST 10年使命结束时，可以使用LSST“深钻”节奏回收大量凌日系外行星系统。在这里，我们扩展了我们以前的工作，研究如何恢复过境行星的轨道周期和半径范围内演变每年的LSST操作。作为具体的例子系统，我们考虑了围绕太阳型恒星运行的热彗星和围绕K-矮星运行的热海王星，它们与地球的距离为几kpc，以及围绕附近低质量M-矮星运行的超级地球。凌日行星的探测随着时间的积累而稳步增加，通常在运行4-6年后变得很大（约10%）。然而，我们也发现，在LSST运行的前1-2年内，已经可以发现围绕G矮星的短周期（102天）热彗星和围绕K矮星的热海王星。
The Large Synoptic Survey Telescope (LSST) will generate light curves for approximately 1 billion stars. Our previous work has demonstrated that, by the end of the LSST 10-year mission, large numbers of transiting exoplanetary systems could be recovered using the LSST “deep-drilling” cadence. Here, we extend our previous work to examine how the recoverability of transiting planets over a range of orbital periods and radii evolves per year of LSST operation. As specific example systems, we consider hot Jupiters orbiting solar-type stars and hot Neptunes orbiting K-dwarfs at distances from Earth of several kpc, as well as super-Earths orbiting nearby low-mass M-dwarfs. The detection of transiting planets increases steadily with the accumulation of data over time, generally becoming large (≳10%) after 4–6 years of operation. However, we also find that short-period (≲2 days) hot Jupiters orbiting G-dwarfs and hot Neptunes orbiting K-dwarfs can already be discovered within the first 1–2 years of LSST operation.