Science. 1995 Jan 20;267(5196):360-2. doi: 10.1126/science.267.5196.360.
The sensitivities of astrometric and radial velocity searches for extrasolar planets are strongly dependent on planetary masses and orbits. Because most nearby stars are less massive than the sun, the first detection is likely to be of a Jupiter-mass planet orbiting a low-mass star, with a possible theoretical expectation being that Jupiter-like planets will be found much closer [inside the Earth-sun separation of 1 astronomical unit (AU)] to these low-luminosity stars than Jupiter is to the sun (5.2 AU). However, radiative hydrodynamic models of protoplanetary disks around low-mass stars (of 0.1 to 1 solar mass) show that Jupiter-like planets should form at distances (approximately 4 to 5 AU) that are only weakly dependent on the stellar mass.
系外行星的天文测量和径向速度搜索的灵敏度强烈依赖于行星的质量和轨道。由于大多数附近的恒星质量都小于太阳，因此首次探测到的可能是一颗木星质量的行星，它围绕着一颗低质量恒星运行，理论上可能的预期是，类似木星的行星将更接近这些低光度恒星（在地球-太阳距离的 1 个天文单位[AU]内），而不是木星与太阳的距离（5.2 AU）。然而，围绕低质量恒星（0.1 到 1 个太阳质量）的原行星盘的辐射流体动力学模型表明，类似木星的行星应该在距离（大约 4 到 5 AU）处形成，而这个距离仅与恒星质量弱相关。
