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
复制标题
CARMA-NRO 猎户座调查:猎户座分子云中反馈的统计特征
DOI:
--
复制
发表时间:
2019
影响因子:
4.9
通讯作者:
J. Carpenter
中科院分区:
文献类型:
--
作者:
J. Feddersen;H. Arce;Shuo Kong;V. Ossenkopf;J. Carpenter
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
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