论文标题

Carma-Nro Orion调查:Protostellar流出,能量和丝状对齐

The CARMA-NRO Orion Survey: Protostellar Outflows, Energetics, and Filamentary Alignment

论文作者

Feddersen, Jesse R., Arce, Héctor G., Kong, Shuo, Suri, Sümeyye, Sánchez-Monge, Álvaro, Ossenkopf-Okada, Volker, Dunham, Michael M., Nakamura, Fumitaka, Shimajiri, Yoshito, Bally, John

论文摘要

我们从Carma-Nro猎户座调查中识别出猎户座的巨型分子云中的45个原始的流出。我们的样本包括11个新检测到的流出。我们通过校正云贡献来测量流出的质量和能量学,包括低速材料。流出的总动量和动能注入速率与云的湍流耗散率相当。我们还将流出位置角度与c $^{18} $ o丝的方向进行比较。我们发现,流出的完整样本与相对于细丝的随机定向是一致的。最可靠的测量值的子样本显示了中等垂直的流出丝线比对,这可能反映了跨细丝和原始核心上的质量积聚。

We identify 45 protostellar outflows in CO maps of the Orion A giant molecular cloud from the CARMA-NRO Orion survey. Our sample includes 11 newly detected outflows. We measure the mass and energetics of the outflows, including material at low-velocities by correcting for cloud contributions. The total momentum and kinetic energy injection rates of outflows is comparable to the turbulent dissipation rate of the cloud. We also compare the outflow position angles to the orientation of C$^{18}$O filaments. We find that the full sample of outflows is consistent with being randomly oriented with respect to the filaments. A subsample of the most reliable measurements shows a moderately perpendicular outflow-filament alignment which may reflect accretion of mass across filaments and onto the protostellar cores.

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