Deep Hubble Space Telescope WFPC2 photometry of NGC 288.: II.: The main-sequence luminosity function

被引：25
作者：
Bellazzini, M
Pecci, FF
Montegriffo, P
Messineo, M
Monaco, L
Rood, RT
机构：
[1] Osservatorio Astron Bologna, I-40127 Bologna, Italy
[2] Univ Bologna, Dipartimento Astron, I-40127 Bologna, Italy
[3] Univ Virginia, Dept Astron, Charlottesville, VA 22903 USA
来源：
ASTRONOMICAL JOURNAL | 2002年 / 123卷 / 05期
关键词：
globular clusters : individual (NGC 288); stars : luminosity function; mass function;
D O I：
10.1086/340082
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
The main-sequence luminosity function (LF) of the Galactic globular cluster NGC 288 has been obtained using deep Wide Field Planetary Camera 2 photometry. We have employed a new method to correct for completeness and fully account for bin-to-bin migration due to blending and/or observational scatter. The effect of the presence of binary systems in the final LF is quantified and is found to be negligible. There is a strong indication of the mass segregation of unevolved single stars and clear signs of a depletion of low-mass stars in NGC 288 with respect to other clusters. The results are in good agreement with the prediction of theoretical models of the dynamical evolution of NGC 288 that take into account the extreme orbital properties of this cluster.
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收藏
页码：2541 / 2551
页数：11
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