标题： 检测到新食双星系统HIP 7666中的经典Delta Scuti星 显示英文标题

标题： Detection of a classical Delta Scuti star in the new eclipsing binary system HIP 7666

摘要： HIP 7666 是在依巴谷（Hipparcos）任务期间新发现的一颗变星，并被归类为未知类型（ESA 1997）。在2000年7月至11月的23个夜晚中，从西班牙 Hostalets de Pierola 和 Monegrillo 观测站获得了超过2300次 V 波段的CCD观测数据。这些数据显示，这颗新变星是一个分离食双星系统，轨道周期为2.37229天。此外，其中一个成分表现出非常短周期的振荡，主要脉动频率为24.46或25.47次/天。因此，HIP 7666 成为目前少数已知的具有 Delta Scuti 类型成分的分离食双星系统之一的新成员。 显示英文摘要

摘要： HIP 7666 is a variable star newly discovered during the Hipparcos mission and classified as of unknown type (ESA 1997). During 23 nights between July 2000 and November 2000, over 2300 CCD observations in the V band were obtained from Hostalets de Pierola and Monegrillo observatories in Spain. These data show that the new variable is a detached eclipsing binary system with an orbital period of 2.37229 days. In addition, one of the components undergoes very short-period oscillations with a main pulsation frequency of 24.46 or 25.47 c/d. HIP 7666 is therefore a new member of the presently very few known detached eclipsing binary systems with a Delta Scuti type component.