CO Outflow Candidates toward the W3/4/5 Complex. II. Feedback from Candidate Outflows

To date, few studies have focused on protostellar outflow feedback at scales larger than several parsecs. To address this paucity of research, we investigate the effects of feedback from CO outflow candidates on their parent clouds over similar to 110 deg(2) toward the W3/4/5 complex and its surroundings. Our search identified 265 (CO)-C-13 clouds with radii being similar to 0.04-17.12 pc. We estimate the turbulent support and potential disruptive effect of the outflow activities through analyzing physical properties of outflow candidates and their host clouds in terms of turbulence and gravitational binding energy. We find that (1) clouds of larger size might be less affected by feedback; (2) the possible scale break is greater than or similar to 4.7 pc for both turbulent support and potential disruptive effect; (3) if outflows couple to dense gas where stars are forming, for clouds in the Perseus arm, a scale less than or similar to 0.2-0.4 pc is sufficient for the energy and momentum injected by outflow activity to maintain turbulence, while for clouds in the Local arm, the scale is less than or similar to 0.1-0.2 pc; and (4) for clouds in the Perseus arm, a scale less than or similar to 0.3-1.0 pc is needed for outflow activity to potentially disperse material away from the natal clouds, while for clouds in the Local arm, the scale is less than or similar to 0.2-0.6 pc. The strength of outflow activity may affect the values in points 3 and 4. Finally, we find that outflow feedback probably possesses the power to alter the line width-size relation.