Infrared CO emission from young stars : high-resolution spectroscopy

Infrared CO emission from young stars : high-resolution spectroscopy
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年轻恒星的红外二氧化碳发射:高分辨率光谱

DOI:
10.1086/186943
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发表时间:
1993
期刊:
The Astrophysical Journal
影响因子:
--
通讯作者:
T. Geballe
T. Geballe
中科院分区:
--
文献类型:
--
作者:
C. Chandler;J. Carlstrom;N. Scoville;W. Dent;T. Geballe

文献摘要

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我们已经检测到10-200 R ○范围内的高密度、高温、中性物质。通过高分辨率(20-40 km s −1)的CO在2.3 μm处的第一泛音带光谱,对五颗年轻恒星进行了观测。我们发现这些源的带头轮廓具有显著的多样性,从明显的双峰(DG Tau),通过从恒星速度(WL 16,NGC 2024 IRS 2和S106 IRS 4)延伸至200 km s −1的发射的宽凸点,到具有1050 km s −1的半高宽速度(SVS 13)的窄线
We have detected the high-density, high-temperature, neutral material within 10-200 R ○. of five young stars through high-resolution (20-40 km s −1 ) spectroscopy of the first overtone bands of CO at 2.3 μm. We find a remarkable diversity in the band head profiles toward these sources, ranging from distinctly double-peaked (DG Tau), through broad bumps with emission extending up to 200 km s −1 from the stellar velocity (WL 16, NGC 2024 IRS 2, and S106 IRS 4), to narrow lines having a FWHM velocity of ∼50 km s −1 (SVS 13)