MACHO项目LMC变星目录第 VI 部分：FO/SO节拍丁频脉冲
天体物理学
2009-10-30 v1
摘要
我们对45颗LMC中FO/SO节拍丁频脉星进行MACHO项目光度测量，这些星同时脉冲于第一和第二超声波(FO和SOo)。我们分析了SO模式脉冲的光度特征。我们预测，单频SO丁频脉星几乎呈正弦光度曲线；我们只能在P<=\1.4天时辨认出SO丁频脉星，区别于基本(B)和FO丁频脉星；且SO分布将重叠LMC FO丁频脉星周期-亮度关系的短周期边缘(当两者均作为函数的光度测量周期绘制时)。我们还报告了一颗SO丁频脉星候选星，MACHO*05:03:39.6-70:04:32，其光度周期为0.775961±0.000019天，仪器振幅为0.047±0.009 mag V波段。
引用
@article{arxiv.astro-ph/9808275,
title = {The MACHO Project LMC Variable Star Inventory. VI. The Second-overtone Mode of Cepheid Pulsation From First/Second Overtone (FO/SO) Beat Cepheids},
author = {The MACHO Collaboration and C. Alcock and R. A. Allsman and D. R. Alves and T. S. Axelrod and A. Becker and D. P. Bennett and K. H. Cook and K. C. Freeman and K. Griest and M. J. Lehner and S. L. Marshall and D. Minniti and B. A. Peterson and M. R. Pratt and P. J. Quinn and A. W. Rodgers and A. Rorabeck and W. Sutherland and A. Tomaney and T. Vandehei and D. L. Welch},
journal= {arXiv preprint arXiv:astro-ph/9808275},
year = {2009}
}
备注
23 pages, 7 Encapsulated PostScript figures. Accepted for publication in the Astrophysical Journal