论文标题
外球星的检测及其对恒星初始质量功能的随机采样的依赖性
Exoplanet detection and its dependence on stochastic sampling of the stellar Initial Mass Function
论文作者
论文摘要
年轻的移动组（YMG）是接近（<100pc），是年轻（<100myr）恒星的相干收集，它们似乎在同一恒星形成的分子云中形成。因此，我们希望他们的单个初始质量功能（IMF）与其他恒星形成区域相似，并扩大了银河场。他们与太阳及其年轻人的近距离近似意味着YMG有望在寻找年轻形成的系外行星的地方。但是，由于恒星数量少，IMF的随机抽样意味着其恒星种群可能会有很大的变化。我们通过多次采样IMF来确定可能的行星托管恒星（光谱类型A，G和M）的范围，并发现某些YMG在M-dwarfs中似乎不足。然后，我们使用这些数据表明，检测地面岩浆海洋行星的预期概率高度取决于通过IMF的随机采样产生的恒星数量。
Young Moving Groups (YMGs) are close (<100pc), coherent collections of young (<100Myr) stars that appear to have formed in the same star-forming molecular cloud. As such we would expect their individual initial mass functions (IMFs) to be similar to other star-forming regions, and by extension the Galactic field. Their close proximity to the Sun and their young ages means that YMGs are promising locations to search for young forming exoplanets. However, due to their low numbers of stars, stochastic sampling of the IMF means their stellar populations could vary significantly. We determine the range of planet-hosting stars (spectral types A, G and M) possible from sampling the IMF multiple times, and find that some YMGs appear deficient in M-dwarfs. We then use these data to show that the expected probability of detecting terrestrial magma ocean planets is highly dependent on the exact numbers of stars produced through stochastic sampling of the IMF.
