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The Gould's Belt Very Large Array Survey. IV. The Taurus-Auriga Complex

机译:古尔德带超大型阵列调查。 IV。金牛座-奥里加情结

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摘要

We present a multi-epoch radio study of the Taurus-Auriga star-forming complex made with the Karl G. Jansky Very Large Array at frequencies of 4.5 GHz and 7.5 GHz. We detect a total of 610 sources, 59 of which are related to young stellar objects (YSOs) and 18 to field stars. The properties of 56% of the young stars are compatible with non-thermal radio emission. We also show that the radio emission of more evolved YSOs tends to be more non-thermal in origin and, in general, that their radio properties are compatible with those found in other star-forming regions. By comparing our results with previously reported X-ray observations, we notice that YSOs in Taurus-Auriga follow a Güdel-Benz relation with κ = 0.03, as we previously suggested for other regions of star formation. In general, YSOs in Taurus-Auriga and in all the previous studied regions seem to follow this relation with a dispersion of ~1 dex. Finally, we propose that most of the remaining sources are related with extragalactic objects but provide a list of 46 unidentified radio sources whose radio properties are compatible with a YSO nature.
机译:我们提供了一个多时相无线电研究,研究了由卡尔·詹斯基(Karl G. Jansky)超大型阵列在4.5 GHz和7.5 GHz频率下形成的金牛座-奥里加星系形成的复合体。我们检测到总共610个源,其中59个与年轻恒星天体(YSO)有关,而18个与外地恒星有关。 56%的年轻恒星的性质与非热无线电发射兼容。我们还表明,演化程度更高的YSO的无线电发射在起源上往往更非热源,并且一般而言,它们的无线电特性与在其他恒星形成地区发现的无线电特性兼容。通过将我们的结果与先前报道的X射线观察结果进行比较,我们注意到Taurus-Auriga中的YSO遵循κ= 0.03的Güdel-Benz关系,正如我们先前对恒星形成的其他区域所建议的那样。通常,Taurus-Auriga和以前研究的所有区域中的YSO似乎都以〜1 dex的离散度遵循这种关系。最后,我们建议剩余的大多数源都与河外物体有关,但提供了46个未识别的无线电源的列表,这些无线电源的无线电特性与YSO性质兼容。

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