标题： 56仙后座的奇特案例：一个几乎正面旋转的快速自转星？ 显示英文标题

标题： The puzzling case of 56 Pegasi: A fast rotator seen nearly face-on?

摘要： R. Griffin 最近为这颗长久以来已知的钡星 56 Peg（它也是一个强 X 射线源）找到了一条光谱轨道。 这个短周期、低质量函数的轨道引发了许多关于该系统历史的问题。 在本文中，我们表明，除非假设巨星是一个相对快速旋转的天体（几倍于 10 公里/秒），否则很难找到一个与当前组成天体质量一致的演化历史。 快速旋转的假设也可以帮助我们解释该天体的其他一些奇特性质。 显示英文摘要

摘要： A spectroscopic orbit has been recently found by R. Griffin for the long known barium star 56 Peg, which is also a strong X-ray source. This short-period, low mass-function orbit raises several questions regarding the history of the system. In the present paper, we show that it is not easy to find an evolutionary history for 56 Peg which is consistent with the current component's masses, unless one assumes that the giant is a relatively fast rotator (a few times 10 km/s). The hypothesis of fast rotation allows us to explain some other peculiarities of this object as well.