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首页> 外文期刊>The Astrophysical journal >THERMAL-INFRARED DETECTION OF OPTICAL OUTFLOW SOURCES IN OMC-1 SOUTH
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THERMAL-INFRARED DETECTION OF OPTICAL OUTFLOW SOURCES IN OMC-1 SOUTH

机译：OMC-1南的光学红外热源检测

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摘要

We present the first thermal-infrared imaging photometry for several embedded sources in theOMC-1 South cloud core in the Orion Nebula, and we propose that some of these drive the optical Herbig-Haro jets emerging from the region. Thermal-infrared images at 8.8 and 11.7 μm obtained at Gemini South show a handful of sources in OMC-1 South with no visual-wavelength counterparts, although a few can be seen in recent near-infrared data. For the three brightest mid-infrared sources, we also present 18.75 μm photometry obtained with the Keck telescope. The most prominent blueshifted outflows in the Orion Nebula at visual wavelengths, such as HH 202, HH 203/204, HH 529, and HH 269, all originate from OMC-1S. The brightest infrared source in OMC-1S at 11.7 μm is located at the base of the prominent jet that powers HH 202 and is likely to be the sought-after driver of this outflow. The second brightest infrared source is located at the base of the HH 529 jet. We consider the possibility that HH 203/204 and HH 269 trace parts of a single bent outflow from the third brightest infrared source. While there may be some lingering ambiguity about which infrared stars drive specific jets, there is now a sufficient number of embedded sources to plausibly account for the multiple outflows from OMC-1S.
机译：我们提出了猎户星云中OMC-1南云核心中几个嵌入式源的第一个热红外成像光度法，我们建议其中一些驱动从该地区出现的光学Hertig-Haro射流。在Gemini South获得的8.8和11.7μm的热红外图像显示，在OMC-1 South中有少量光源，没有可见波长对应物，尽管在最近的近红外数据中可以看到一些。对于三个最明亮的中红外光源，我们还介绍了用Keck望远镜获得的18.75μm光度法。在猎户星云中，在可见波长处最显着的蓝移流出物，例如HH 202，HH 203/204，HH 529和HH 269，都来自OMC-1S。 OMC-1S中11.7μm处最亮的红外源位于为HH 202供电的突出射流的底部，并且很可能是该流出的热门驱动器。第二个最亮的红外源位于HH 529喷嘴的底部。我们考虑HH 203/204和HH 269跟踪来自第三最亮红外源的单个弯曲流出部分的可能性。尽管对于哪个红外恒星驱动特定的喷射可能存在一些不确定性，但是现在有足够多的嵌入式源可以合理地解释OMC-1S的多次流出。

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