2nd Drake: Number of Planets per Star, Suitable for Life in the Habitable Zone (Spectral Class F, G and K)
摘要
The second parameter will also be estimated using directly what we find in the literature. In this case, the 2020 work of Michelle Kunimoto and Jaymie M. Matthews, which is based on an independent catalog of extrasolar planets compiled from about 200,000 stars, directly provides the result we need [57] (Fig. 4.1).