期刊
NEW ASTRONOMY
卷 12, 期 5, 页码 378-382出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.newast.2006.12.002
关键词
planetary nebulae : general; HII regions; dust extinction; methods : data analysis
Spectral lines are used to determine a broad range of physical properties within HII regions and planetary nebulae (PNe). It is therefore important that we possess accurate intensities for the transitions, and have the means by which observed results may be accurately de-reddened. We point out that there are serious differences between the standard extinction curves, and that these may lead to errors in line ratios of as high as similar to 80%. It is noted that the variation in Balmer line ratios in planetary nebulae is most consistent with the extinction curves of Whitworth [Whitworth, A.E., 1958. AJ 63, 201] and Ardeberg and Virdefors [Ardeberg, A., Virdefors, B., 1982. A&A 115, 347], and that these are likely to represent the most reliable functions for spectral de-reddening. (c) 2006 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据