论文标题
探索热木星的依赖性与苔丝的恒星质量
Exploring the Dependence of Hot Jupiter Occurrence Rates on Stellar Mass with TESS
论文作者
论文摘要
我们根据过境系外行星调查卫星（TESS）Prime Mission的数据，对矮星周围热木星的发生率进行了估计。我们从独立的搜索tess Prime Data的独立搜索中，从580万美元_ {\ odot} $到230万美元_ {\ odot} $中，乘坐97个热木星旋转的198,721 AFG矮星（质量为80万美元_ {\ odot} $到230万美元_ {\ odot} $）。我们估计，我们的星球的假阳性率为$ 14 \ pm7 \％$ $ $ $ $ $，$ 16 \ pm6 \％\％$ $ $ $ $ $ $ $ $ $ $ 0 \％$ $ $ $ $ $ $ $ $ $ $。我们发现，恒星的热木星发生率为0.29 \ pm 0.05 \％$，$ 0.36 \ pm 0.06 \％$ $ $ $ $ $ $ $ $ $ $ $ 0.55 \ pm 0.14 \％\％\％\％\％\％\％\％$ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ 0.33 \ pm0.04.04 \％\％\％\％\％。我们的结果表明，较高的热木星丰度和较低的恒星质量之间存在相关性，并且与Kepler发现的发生率非常吻合。在纠正苔丝恒星样品中存在二进制文件后，我们估计G星的单星木星出现率为0.98 \ pm0.36 \％$。这与径向速度（RV）调查的结果一致，表明恒星多重性校正能够根据Transits和RVS解决热木星发生率之间的差异。
We present estimates for the occurrence rates of hot Jupiters around dwarf stars based on data from the Transiting Exoplanet Survey Satellite (TESS) Prime Mission. We take 97 hot Jupiters orbiting 198,721 AFG dwarf stars (ranging in mass from $0.8M_{\odot}$ to $2.3M_{\odot}$) from an independent search for hot Jupiters using TESS Prime Mission data. We estimate our planet sample's false positive rates as $14\pm7\%$ for A stars, $16\pm6\%$ for F stars, and $0\%$ for G stars. We find hot Jupiter occurrence rates of $0.29 \pm 0.05\%$ for A stars, $0.36 \pm 0.06\%$ for F stars and $0.55 \pm 0.14\%$ for G stars, with a weighted average across AFG stars of $0.33\pm0.04\%$. Our results show a correlation between higher hot Jupiter abundance and lower stellar mass, and are in good agreement with occurrence rates found by Kepler. After correcting for the presence of binaries in the TESS stellar sample, we estimate a single-star hot Jupiter occurrence rate of $0.98\pm0.36\%$ for G stars. This is in agreement with results from radial velocity (RV) surveys, indicating that stellar multiplicity correction is able to resolve the discrepancy between hot Jupiter occurrence rates based on transits and RVs.
