Near Infrared Wavelength Spectroscopy of Planetary Nebulae

行星状星云的近红外波长光谱

• 批准号: 9413480
• 负责人: Lauren Likkel
• 金额: --
• 依托单位: Washington State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-05-15 至 1996-10-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9413480&HistoricalAwards=false
• 关键词: Near; Infrared; Wavelength; Spectroscopy; Planetary

9413480 Likkel The near-infrared spectra of Planetary Nebulae (PNe) will be studied in order to characterize them in terms of electromagnetic emission processes. This research is especially timely because it involves infrared wavelength observations which were not possible until recently. The initial observations of the project will be pursued by using the infrared camera, GRIM-II, on the 3.5m telescope at Apache Point Observatory in New Mexico. The Washington State University Program in Astronomy has access to this telescope and has the facilities to reduce the data from the observations. A major thrust of this project is to understand what effect emission lines, etc, have on the infrared wavelength bands ,J, H, and K, observed using photometric detectors. What are the various contributions to the brightness of the observed J, H, and K infrared wavelength bands? By answering this question, J, H, and K colors of PNe can be interpreted more accurately. Trends and correlations between the morphology, excitation, composition, and other characteristics of the PNe, will be identified so that the results can be generalized to other nebulae. The results of the research will provide useful information that will benefit astronomers studying PNe. The results will also be useful to researchers studying similar objects, such as symbiotic stars, BE type stars, and ultra-compact ionized Hydrogen (HII) regions. Useful and interesting results of the research will provide a basis on which a more extensive project may be planned.

9413480 Likkel将研究行星状星云的近红外光谱，以便从电磁发射过程的角度来表征它们。这项研究特别及时，因为它涉及到红外波长观测，直到最近才成为可能。该项目的初步观测将使用新墨西哥州阿帕奇角天文台3.5米望远镜上的红外照相机GRIM-II进行。华盛顿州立大学天文学项目可以使用这台望远镜，并有能力减少观测数据。本项目的主要目的是了解发射线等对使用测光探测器观察到的红外波段J、H和K的影响。对观测到的J、H和K红外波段亮度的各种贡献是什么？通过回答这个问题，可以更准确地解释PNe的J、H和K颜色。将确定PNe的形态、激发、组成和其他特征之间的趋势和相关性，以便将结果推广到其他星云。这项研究的结果将提供有用的信息，使天文学家研究PNe受益。这些结果也将有助于研究类似物体的研究人员，如共生星，BE型星和超紧凑电离氢（HII）区域。研究的有用和有趣的结果将为规划更广泛的项目提供基础。