利用 RR Lyrae 星测定巴亚德之窗消光零点
天体物理学
2009-10-30 v1
摘要
我们通过比较发现于 MACHO 观测中20颗 RR Lyrae 星（类型 ab）的观测 (V-K) 颜色与其固有 (V-K)_0 颜色（依据周期关系由附近 RR Lyrae 星确定），来测定 Stanek (1996) 涂层图的零点。我们发现，Stanek 涂层图的零点应将其改变 \Delta A_V = -0.11 \pm 0.05 mag，与 Gould, Popowski & Terndrup (1997) 利用 K 类巨星测得的最新值在误差范围内完全一致。
关键词
引用
@article{arxiv.astro-ph/9706292,
title = {The Zero Point of Extinction Toward Baade's Window From RR Lyrae Stars},
author = {C. Alcock and R. A. Allsman and D. R. 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 A. Gould and J. A. Guern and M. J. Lehner and S. L. Marshall and D. Minniti and B. A. Peterson and P. Popowski and M. R. Pratt and P. J. Quinn and A. W. Rodgers and C. W. Stubbs and W. Sutherland and T. Vandehei and D. L. Welch},
journal= {arXiv preprint arXiv:astro-ph/9706292},
year = {2009}
}
备注
Submitted to ApJ, 18 pages including figures