Near-Infrared Polarization Images of the Orion Nebula

Near-Infrared Polarization Images of the Orion Nebula
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DOI：
10.1086/508168
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发表时间：
2006-09
期刊：
The Astrophysical Journal Letters
影响因子：
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通讯作者：
M. Tamura;R. Kandori;N. Kusakabe;Y. Nakajima;J. Hashimoto;C. Nagashima;T. Nagata;T. Nagayama;H. Kimura;T. Yamamoto;J. Hough;P. Lucas;A. Chrysostomou;J. Bailey
M. Tamura;R. Kandori;N. Kusakabe;Y. Nakajima;J. Hashimoto;C. Nagashima;T. Nagata;T. Nagayama;H. Kimura;T. Yamamoto;J. Hough;P. Lucas;A. Chrysostomou;J. Bailey
中科院分区：
其他
文献类型：
--
作者：
M. Tamura;R. Kandori;N. Kusakabe;Y. Nakajima;J. Hashimoto;C. Nagashima;T. Nagata;T. Nagayama;H. Kimura;T. Yamamoto;J. Hough;P. Lucas;A. Chrysostomou;J. Bailey

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给出了猎户座星云的广视场(~8‘×8’)和深近红外(JHKs波段)偏振图像。这些数据揭示了各种恒星周围的结构，如红外线反射星云(IRNe)围绕着年轻恒星对象(YSO)，既有大质量的，也有小质量的。我们发现IRc2和BN周围的IRN都非常广泛，这表明在这些源中可能存在两个扩展的(&gt；0.7pC)双极/单极IRNe。我们在质量较小的YSO周围发现了至少13个较小尺度(~0.01-0.1pC)的IRNe，包括著名的源θ2或C。我们还表明，在低质量YSO和年轻的棕矮星周围存在许多未分解的(&lt；690AU)系统，显示出可能的内在极化。因此，广场红外偏振测量被证明是揭示大质量到亚恒星YSO之间的IRNe和潜在的盘/流出系统的一种强有力的技术。
Wide-field (~8′ × 8′) and deep near-infrared (JHKs bands) polarization images of the Orion Nebula are presented. These data revealed various circumstellar structures as infrared reflection nebulae (IRNe) around young stellar objects (YSOs), both massive and low-mass. We found the IRN around both IRc2 and BN to be very extensive, suggesting that there might be two extended (>0.7 pc) bipolar/monopolar IRNe in these sources. We discovered at least 13 smaller scale (~0.01-0.1 pc) IRNe around less massive YSOs, including the famous source θ2 Ori C. We also suggest the presence of many unresolved (<690 AU) systems around low-mass YSOs and young brown dwarfs showing possible intrinsic polarizations. Wide-field infrared polarimetry is thus demonstrated to be a powerful technique in revealing IRNe and hence potential disk/outflow systems among high-mass to substellar YSOs.