MACHO项目暗星系 SMC 可变星目录：I. 从第一/第二头模式到第二头模式的克氏星脉动
天体物理学
2007-05-23 v1
摘要
我们报告在暗星系小银河系(SMC)中发现的20颗1H/2H和7颗F/1H脉冲克氏星。我们利用这20颗1H/2H星来确定SMC第二头(2H)模式克氏星脉动的光度曲线形状。我们预测，类似于Alcock等人 (1997, ApJ, submitted)的发现，2H克氏星将具有近乎或纯正的正弦光度变化；在光度测量精度范围内，2H克氏星的P-L关系将不可与1H克氏星的P-L关系区分；且2H星可能通过在0.7天以下的周期范围内的振幅-周期图和傅里叶参数序列来区别于F和1H星。
引用
@article{arxiv.astro-ph/9709025,
title = {The MACHO Project SMC Variable Star Inventory: I. The Second-overtone Mode of Cepheid Pulsation From First/Second Overtone (1H/2H) Beat Cepheids},
author = {The MACHO Collaboration and C. Alcock and R. A. Allsman and D. Alves and T. S. Axelrod and A. C. 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 B. A. Peterson and P. J. Quinn and A. W. Rodgers and A. Rorabeck and W. Sutherland and A. Tomaney and T. Vanderhei},
journal= {arXiv preprint arXiv:astro-ph/9709025},
year = {2007}
}
备注
15 pages, 4 Encapsulated PostScript figures. Submitted to the Astronomical Journal