矮小不规则星系NGC 6822中的变星：光度目录
天体物理学
2009-11-10 v2
摘要
使用ESO大型望远镜获取的深层B,V光度时间序列数据用于识别矮小不规则星系NGC 6822中的变星。我们勘测了该星系一个6.8×6.8弧分钟的区域，检测到390个候选变星的数量，使用Alard(2000)的优化图像减法技术。对其中262个变星获得了规模为光度的光变曲线，剩余样本可获得差分flux光变曲线。本文我们呈现了已校准光变曲线和时间序列数据的光度目录，包括坐标和变星分类。我们详细描述了用于识别变星和将差分flux光变曲线校准到光度尺度的程序。
引用
@article{arxiv.astro-ph/0411137,
title = {Variable stars in the dwarf irregular galaxy NGC 6822: the photometric catalogue},
author = {L. Baldacci and L. Rizzi and G. Clementini and E. V. Held},
journal= {arXiv preprint arXiv:astro-ph/0411137},
year = {2009}
}
备注
22 pages, 19 figures only as JPEG. Revised version with corrected eq. 5. Full text with better resolution .ps figures available upon request from the authors. Uses aa.cls (included), in press on A&A. Table 2 will only be published at the CDS, Appendix A, Tables 4,5,6 will only be available in the electronic edition of the Journal