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首页> 外文期刊>The Astrophysical Journal. Supplement Series >The Chandra Carina Complex Project view of Trumpler 16
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The Chandra Carina Complex Project view of Trumpler 16

机译：钱德勒·卡里纳（Tandraler）16的钱德拉·卡里纳综合项目

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Trumpler 16 is a well-known rich star cluster containing the eruptive supergiant η Carinae and located in the Carina star-forming complex. In the context of the Chandra Carina Complex Project, we study Trumpler 16 using new and archival X-ray data. A revised X-ray source list of the Trumpler 16 region contains 1232 X-ray sources including 1187 likely Carina members. These are matched to 1047 near-infrared counterparts detected by the HAWK-I instrument at the Very Large Telescope allowing for better selection of cluster members. The cluster is irregular in shape. Although it is roughly circular, there is a high degree of sub-clustering, with no noticeable central concentration and an extension to the southeast. The high-mass stars show neither evidence of mass segregation nor evidence of strong differential extinction. The derived power-law slope of the X-ray luminosity function for Trumpler 16 reveals a much steeper function than the Orion Nebula Cluster, implying a different ratio of solar- to higher-mass stars. We estimate the total Trumpler 16 pre-main-sequence population to be >6500 Class II and Class III X-ray sources. An overall K-excess disk frequency of 8.9% is derived using the X-ray-selected sample, although there is some variation among the sub-clusters, especially in the southeastern extension. X-ray emission is detected from 29 high-mass stars with spectral types between B2 and O3.
机译：Trumpler 16是一个著名的富星团，包含爆发超巨星ηCarinae，位于Carina成星复合体中。在钱德拉·卡里纳复杂项目的背景下，我们使用新的档案X射线数据研究了Trumpler 16。经修订的Trumpler 16地区的X射线源列表包含1232个X射线源，其中包括1187个可能的Carina成员。这些与在超大望远镜上由HAWK-I仪器检测到的1047个近红外对应物相匹配，从而可以更好地选择聚类成员。团簇形状不规则。尽管它是大致圆形的，但存在高度的子集群，没有明显的中心集中，并且向东南延伸。高质量恒星既没有显示出质量分离的迹象，也没有显示出强烈的物种灭绝的迹象。推特勒16号的X射线光度函数的幂律斜率显示出比猎户座星云团更陡峭的函数，这意味着太阳与高质量恒星的比率不同。我们估计Trumpler 16主序前人口总数为> 6500个II级和III级X射线源。使用X射线选择的样本可以得出8.9％的总K过剩磁盘频率，尽管子集群之间存在一些差异，尤其是在东南延伸地区。从29颗B2和O3之间的光谱类型的高质量恒星检测到X射线发射。

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