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首页> 外文期刊>The Astrophysical journal >Compact Radio Sources in Orion: New Detections, Time Variability, and Objects in OMC-1S
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Compact Radio Sources in Orion: New Detections, Time Variability, and Objects in OMC-1S

机译:Orion中的紧凑型无线电源:OMC-1S中的新检测,时变和物体

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摘要

We present the analysis of four 3.6 cm radio continuum archival observations of Orion obtained using the Very Large Array in its A configuration, with 03 angular resolution. The observations were made during the period 1994–1997. In a region of 4' × 4', we detect 77 compact radio sources. Of these sources, 54 are detected in one or more of the individual observations, and 36 of these show time variability (by more than 30%) between the observed epochs. A deep image made from averaging all data shows an additional 23 faint sources, in the range of 0.1 to 0.3 mJy. Of the 77 sources, 39 are new centimeter detections. However, only 9 of the 77 sources do not have a previously reported counterpart at near-infrared, optical, or X-ray wavelengths. In particular, we detect three faint sources in the OMC-1S region that may be related to the sources that power the multiple outflows that emanate from this part of the Orion Nebula.
机译:我们介绍了使用超大型阵列的A构型和03角分辨率获得的Orion的四个3.6厘米无线电连续档案存档观测值的分析。这些观察是在1994-1997年期间进行的。在4'×4'的区域中,我们检测到77个紧凑型无线电源。在这些来源中,有54项是在一项或多项个别观察中检测到的,其中36项显示了在观察到的历元之间的时间变化(超过30%)。通过对所有数据求平均得到的深图像显示出另外23个微弱的信号源,范围在0.1到0.3 mJy之间。在77个源中,有39个是新的厘米检测。但是,在77个光源中,只有9个没有以前报告的近红外,光学或X射线波长的对应光源。特别是,我们在OMC-1S区域中检测到三个微弱的源,这些源可能与为猎户座星云的这一部分所产生的多个流出提供动力的源有关。

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