We present results of a spectroscopic survey for new K- and M-type members of Scorpius-Centaurus (Sco-Cen), the nearest OB Association (~100-200pc). Using an X-ray, proper motion and color-magnitude selected sample, we obtained spectra for 361 stars, for which we report spectral classifications and Li and Ha equivalent widths. We identified 156 new members of Sco-Cen, and recovered 51 previously published members. We have combined these with previously known members to form a sample of 493 solar-mass (~0.7-1.3M_[sun}) members of Sco-Cen.We investigated the star-formation history of this sample, and re-assessed the ages of the massive main-sequence turn-off and the G-type members in all three subgroups. We performed a census for circumstellar disks in our sample using WISE infrared data and find a protoplanetary disk fraction for K-type stars of 4.4^+1.6^-0.9_% for Upper Centaurus-Lupus and Lower Centaurus-Crux at ~16Myr and 9.0^+0.4^-2.2% for Upper Scorpius at~10Myr.

Cone search capability for table J/MNRAS/461/794/table1 (Photometry and proper motion data for candidates in the Sco-Cen region)

Cone search capability for table J/MNRAS/461/794/table3 (Infrared photometry and infrared excesses for members of Sco-Cen)

Cone search capability for table J/MNRAS/461/794/table4 (Membership properties for Sco-Cen candidates)

Cone search capability for table J/MNRAS/461/794/table7 (Stellar properties for Sco-Cen members)

Cone search capability for table J/MNRAS/461/794/table8 (Objects rejected as Sco-Cen members)

Cone search capability for table J/MNRAS/461/794/table9 (Stellar parameters for Sco-Cen G-Type stars not included in Table 7)

Cone search capability for table J/MNRAS/461/794/table10 (Stellar parameters for Sco-Cen main sequence turnoff stars)