Outflows and Bubbles in Taurus: Star-formation Feedback Sufficient to Maintain Turbulence

We have identified outflows and bubbles in the Taurus molecular cloud based on the $\sim 100$ deg${}^2$ Five College Radio Astronomy Observatory ${}^{12}$CO(1-0) and ${}^{13}$CO(1-0) maps and the Spitzer young stellar object catalogs. In the main 44 deg${}^2$ area of Taurus we found 55 outflows, of which 31 were previously unknown. We also found 37 bubbles in the entire 100 deg${}^2$ area of Taurus, all of which had not been found before. The total kinetic energy of the identified outflows is estimated to be $\bf \sim 3.9 \times 10^{45}$ erg, which is $\mathbf{\text{1\%}}$ of the cloud turbulent energy. The total kinetic energy of the detected bubbles is estimated to be $\sim 9.2 \times 10^{46}$ erg, which is 29% of the turbulent energy of Taurus. The energy injection rate from outflows is $\sim \mathbf{1.3}\times {\mathbf{10}}^{\mathbf{33}}\mathrm{e}\mathrm{r}\mathrm{g}{\mathrm{s}}^{-1}$, $\mathbf{\text{0.4}}\mathbf{\text{-}}\mathbf{\text{2}}\mathbf{\text{times}}$ the dissipation rate of the cloud turbulence. The energy injection rate from bubbles is $\sim 6.4\times {10}^{33}$ erg s${}^{-1}$, $\mathbf{\text{2}}\mathbf{\text{-}}\mathbf{\text{10}}\mathbf{\text{times}}$ the turbulent dissipation rate of the cloud. The gravitational binding energy of the cloud is $\sim \mathbf{1.5}\times {\mathbf{10}}^{\mathbf{48}}$ {\bf erg}, $\mathbf{\text{385}}$ and 16 times the energy of outflows and bubbles, respectively. We conclude that neither outflows nor bubbles can \textbf{provide enough energy to balance the overall gravitational binding energy and the turbulent energy of Taurus. However,} in the current epoch, stellar feedback is sufficient to maintain the observed turbulence in Taurus.