CCD photometry of distant open clusters - IV. Trumpler 5
CCD photometry of distant open clusters - IV. Trumpler 5
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遥远疏散星团的 CCD 光度测量 - IV。
DOI：
10.1051/aas:1998453
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发表时间：
1998
期刊：
影响因子：
--
通讯作者：
J. Kaluzny
中科院分区：
文献类型：
--
作者：
J. Kaluzny
我们目前的BVI测光Trumpler 5，一个丰富的疏散星团位于银河系的反中心。星团年龄略低于M67的年龄。它的距离模$（m-M）_{0}$和红化$E（B-V）$分别估计为12.4和0.58。这些数值是根据假定的星团太阳金属丰度计算的。我们的数据表明，Tr 5是已知的老疏散星团样本中最丰富的对象之一。只有在主序星上部才有超过3000 $m_{\odot}$的总质量。星团的角直径估计为11.6弧分，相当于一个线性大小约为20秒差距，估计距离为$d\约3.0$ kpc。
We present BVI photometry for Trumpler 5, a rich open cluster located in the Galactic anticenter. The cluster age is slightly lower than the age of M 67. Its distance modulus $(m-M)_{0}$ and reddening $E(B-V)$ are estimated at 12.4 and 0.58, respectively. These values were obtained for the assumed solar metallicity of the cluster. Our data indicate that Tr 5 is one of the richest objects among the sample of known old open clusters. The total mass included only in upper-main sequence stars exceeds 3000 $m_{\odot}$. The angular diameter of the cluster is estimated at 11.6 arcmin, which corresponds to a linear size of about 20 pc for an estimated distance $d\approx 3.0$ kpc.