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arXiv 2004.035042020-04-07astro-ph.GAastro-ph.SR

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

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

备注：: 22 pages, 11 figures in main text, 47 additional figures in appendices. Accepted to ApJ
DOI：: 10.3847/1538-4357/ab86a9

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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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