The CARMA–NRO Orion Survey: Statistical Signatures of Feedback in the Orion A Molecular Cloud

The CARMA–NRO Orion Survey: Statistical Signatures of Feedback in the Orion A Molecular Cloud
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CARMA-NRO 猎户座调查:猎户座分子云中反馈的统计特征

DOI:
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发表时间:
2019
影响因子:
4.9
通讯作者:
J. Carpenter
J. Carpenter
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
J. Feddersen;H. Arce;Shuo Kong;V. Ossenkopf;J. Carpenter

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我们使用来自 CARMA-NRO Orion 巡天的 (1−0)、(1−0) 和 C18O(1−0) 地图研究了 Orion A 分子云中的湍流和反馈之间的关系。我们将气体统计数据与云不同部分的反馈影响进行比较,以测试反馈是否会改变分子气体的结构和运动学。我们使用主成分分析、谱相关函数和空间功率谱来表征云。我们通过原恒星流出和风吹壳的动量注入率以及年轻恒星的表面密度来量化反馈的影响。我们发现炮弹或流出量与任何气体统计数据之间没有相关性。然而,我们发现年轻恒星表面密度和光谱相关函数的斜率之间存在显着的反相关性,这表明反馈可能会影响这一统计数据。在计算主成分时,我们发现分子线图的协方差矩阵中的峰值向可能由反馈产生的云的几个区域偏移了 1-3。我们将这些结果与分子云模拟的预测进行比较。
We investigate the relationship between turbulence and feedback in the Orion A molecular cloud using maps of (1−0), (1−0), and C18O(1−0) from the CARMA–NRO Orion survey. We compare gas statistics with the impact of feedback in different parts of the cloud to test whether feedback changes the structure and kinematics of molecular gas. We use principal component analysis, the spectral correlation function, and the spatial power spectrum to characterize the cloud. We quantify the impact of feedback with momentum injection rates of protostellar outflows and wind-blown shells as well as the surface density of young stars. We find no correlation between shells or outflows and any of the gas statistics. However, we find a significant anticorrelation between young star surface density and the slope of the spectral correlation function, suggesting that feedback may influence this statistic. While calculating the principal components, we find peaks in the covariance matrix of our molecular line maps offset by 1–3 toward several regions of the cloud that may be produced by feedback. We compare these results to predictions from molecular cloud simulations.
DOI: 10.1088/0004-637x/771/2/123
发表时间: 2013
期刊: The Astrophysical Journal
影响因子: --
作者:
Burkhart;Lazarian;Ossenkopf;Stutzki
通讯作者: Stutzki
DOI: 10.1051/0004-6361:20078247
发表时间: 2007-09
影响因子: 6.5
作者:
K. Menten;M. Reid;J. Forbrich;J. Forbrich;A. Brunthaler
通讯作者: K. Menten;M. Reid;J. Forbrich;J. Forbrich;A. Brunthaler