HST Spectroscopy of the Orion Nebula
HST Spectroscopy of the Orion Nebula
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猎户座星云的 HST 光谱
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
P. Martin
中科院分区：
文献类型：
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作者：
R. Rubin;G. Ferland;R. Dufour;D. Walter;C. O’Dell;J. Baldwin;J. J. Hester;P. Martin
从我们最近用哈勃太空望远镜获得的猎户座星云的暗天体光谱仪（FOS）观测中，我们提出了解决氮丰度的初步结果。检测到的品系及其鉴定包括在H区首次测量到nii] 2142a品系。这一测量与[0 II] 2471 A相结合，允许对猎户座重要的N/O比率进行新的评估。不幸的是，niii] 1747- 54a多路复用和oiii] 1660- 66a多路复用的测量结果具有较差的信噪比，从而排除了另一个独立的N/O推导。
From our recent Faint Object Spectrograph (FOS) observations of the Orion Nebula obtained with the Hubble Space Telescope, we present preliminary results that address the nitrogen abundance. The list of detected lines and their identifications included the first measurement of the N II] 2142 A line in an H II region. This measurement in conjunction with [0 II] 2471 A permits a new assessment of the important N/O ratio in Orion. Unfortunately, the measurements of the N III] 1747-54 A multiplet and the O III] 1660-66 A multiplet have poor signal-to-noise, precluding another independent derivation of N/O.