We present an analysis of cool outflowing gas around galaxies , traced by Mg II absorption lines in the co-added spectra of a sample of 486 zCOSMOS galaxies at 1 \leq z \leq 1.5 .
These galaxies span a range of stellar masses ( { 9.45 \leq \log _ { 10 } [ M _ { * } / M _ { \odot } ] \leq 10.7 } ) and star formation rates ( { 0.14 \leq \log _ { 10 } [ SFR / M _ { \odot } yr ^ { -1 } ] \leq 2.35 } ) .
We identify the cool outflowing component in the Mg II absorption and find that the equivalent width of the outflowing component increases with stellar mass .
The outflow equivalent width also increases steadily with the increasing star formation rate of the galaxies .
At similar stellar masses the blue galaxies exhibit a significantly higher outflow equivalent width as compared to red galaxies .
The outflow equivalent width shows strong effect with star formation surface density ( { \Sigma _ { SFR } } ) of the sample .
For the disk galaxies , the outflow equivalent width is higher for the face-on systems as compared to the edge-on ones , indicating that for the disk galaxies , the outflowing gas is primarily bipolar in geometry .
Galaxies typically exhibit outflow velocities ranging from { -200 kms ^ { -1 } } { \sim - 300 kms ^ { -1 } } and on average the face-on galaxies exhibit higher outflow velocity as compared to the edge-on ones .
Galaxies with irregular morphologies exhibit outflow equivalent width as well as outflow velocities comparable to face on disk galaxies .
These galaxies exhibit minimum mass outflow rates > 5-7 { M _ { \odot } yr ^ { -1 } } and a mass loading factor ( { \eta = \dot { M } _ { out } / SFR } ) comparable to the star formation rates of the galaxies .