The planet in M4: implications for planet formation in globular clusters
The planet in M4: implications for planet formation in globular clusters
复制标题
M4 中的行星：对球状星团中行星形成的影响
DOI：
10.1111/j.1365-2966.2004.08404.x
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
J. Pringle
中科院分区：
文献类型：
--
作者：
M. Beer;A. King;J. Pringle
我们研究球状星团M4中行星系统PSR B1620 - 26的形成和演化。我们建议，由于M4是一个金属丰度非常低的环境，因此不应应用通过气体吸积到金属岩石核心上而围绕主序星形成行星的标准模型。因此，以前建议的形成方法是不可能的。我们认为，这颗行星是由一颗经过的星星与一个环双星盘在内部双星演化的共同包络阶段相互作用而形成的。这种形成路线是由致密的恒星系统，如球状星团。Ke yw ords：planets and satellites：formation-planetary systems：protoplanetary disks-satellites：individual：PSR B1620 - 26.
We consider the formation and evolution of the planetary system PSR B1620‐26 in the globular cluster M4. We propose that as M4 is a very low-metallicity environment the standard model of planet formation around main-sequence stars through the accretion of gas on to metallic rocky cores should not be applied. Consequently the previously suggested methods for formation are unlikely. We propose that the planet formed through the interaction of a passing star with a circumbinary disc during the common-envelope phase of the evolution of the inner binary. This formation route is favoured by dense stellar systems such as globular clusters. Ke yw ords: planets and satellites: formation ‐ planetary systems: protoplanetary discs ‐ pulsars: individual: PSR B1620‐26.