Temperature Fluctuations in Photoionized Nebulae in Case of Oxygen and Nitrogen Abundances

• 作者: Derck P. Smits S. Belay Goshu
• 来源期刊: 应用数学(英文)
• 学科: 数学
• 关键词: H II REGION PLANETARY NEBULAE ABUNDANCES
• 年，卷（期）: 2015,（2）
• 页码范围: 440-446
• 页数: 7页
• 分类号: O1

摘要

We present the dependence of electron temperature fluctuations of O++ and H+ by the chemical abundances of oxygen and nitrogen. Models assume that hydrogen density is uniform in one case and non uniform in the second case, which vary with the distance from the central star. The abundances of oxygen and nitrogen change by scale factor 5 and 1/5. Our analysis suggests that temperature fluctuations are consistent with photoionization. Using the cloudy photoionization code, we found a reasonable close agreement of the computed value with the one that was done before this work. Our simulation also shows that how change of abundances affects temperature fluctuations and its value is less than 0.01.