The IC 2391 Supercluster
The IC 2391 Supercluster
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IC 2391 超级集群
DOI：
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发表时间：
1991
期刊：
影响因子：
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通讯作者：
O. Eggen
中科院分区：
文献类型：
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作者：
O. Eggen
63颗场星和稀疏星系团IC 2391已被确认为IC 2391超星系团的成员。成员至少有95%的空间运动指向（A，D）=（5 h .82，−12°.44）。IC 2391超星系团和非常相似的昴星团一样，包含两个年龄的天体：t=8× 197和2.5× 108年。一颗原型非常活跃的色球层（VAC）星星和神秘的巨变星TZ For是超星系团成员，还有两颗被怀疑拥有微粒盘的A型恒星。一个特别有趣的成员是XiCep（HR 8417）系统，其中两个最亮的部分质量大大不足
Sixty-three field stars and the sparse cluster IC 2391 have been identified as members of the IC 2391 supercluster. The members have at least 95% of their space motion, directed toward (A,D)=(5 h .82, −12°.44). Like members of the very similar Pleiades supercluster, the IC 2391 supercluster contains objects of two ages : t=8×19 7 and 2.5×10 8 yr. A prototype very active chromosphere (VAC) star and the enigmatic giant variable TZ For are supercluster members together with two A-type stars suspected of possessing particulate disks. An especially interesting member is the system of Xi Cep (HR 8417) in which the two brightest components are greatly undermassive