2 MICRON SPECTROPHOTOMETRY OF THE ORION NEBULA AND THE DETECTION OF SIGNIFICANT [FE-III] EMISSION

被引：12
|
作者：
DEPOY, DL
POGGE, RW
机构：
[1] Department of Astronomy, Ohio State University, Columbus, OH 43210-1106
来源：
ASTROPHYSICAL JOURNAL | 1994年 / 433卷 / 02期
关键词：
H-II REGIONS; INFRARED; ISM; LINES AND BANDS; INDIVIDUAL (ORION NEBULA); LINE; IDENTIFICATION; TECHNIQUES; SPECTROSCOPIC;
D O I：
10.1086/174681
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We present 2.0-2.4 mum spectra of the Orion Nebula (NGC 1976) made by stepping a long-slit spectrometer across the nebula. We have synthesized the spectrum of the Orion Nebula in a large effective aperture of 4' x 6' by combining the individual long-slit spectra. We have also extracted spectra from two smaller regions where we have observed strong H-2 and [Fe III] line emission, respectively. We detect significant [Fe III] emission and suggest that at low spectral resolutions some [Fe III] lines would be blended with critical H-2 lines and thus affect determinations of the H-2 excitation mechanism.
引用
收藏
页码：725 / 728
页数：4
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