SIMBAD references

2018ApJ...862..121F - Astrophys. J., 862, 121-121 (2018/August-1)

Expanding CO shells in the Orion A molecular cloud.

FEDDERSEN J.R., ARCE H.G., KONG S., SHIMAJIRI Y., NAKAMURA F., HARA C., ISHII S., SASAKI K. and KAWABE R.

Abstract (from CDS):

We present the discovery of expanding spherical shells around low- to intermediate-mass young stars in the Orion A giant molecular cloud using observations of 12CO(1-0) and 13CO(1-0) from the Nobeyama Radio Observatory 45 m telescope. The shells have radii from 0.05 to 0.85 pc and expand outward at 0.8-5 km s–1. The total energy in the expanding shells is comparable to protostellar outflows in the region. Together, shells and outflows inject enough energy and momentum to maintain the cloud turbulence. The mass-loss rates required to power the observed shells are two to three orders of magnitude higher than predicted for line-driven stellar winds from intermediate-mass stars. This discrepancy may be resolved by invoking accretion-driven wind variability. We describe in detail several shells in this paper and present the full sample in the online journal.

Abstract Copyright: © 2018. The American Astronomical Society. All rights reserved.

Journal keyword(s): ISM: bubbles - ISM: clouds - ISM: individual objects: Orion A - stars: formation - stars: pre-main sequence - stars: winds, outflows

Simbad objects: 45

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2021.06.15-15:56:20

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