Luminous Starbursts in the Redshift Desert at z~1-2: Star Formation Rates, Masses & Evidence for Outflows

摘要: We present a spectroscopic catalogue of 40 luminous starburst galaxies at z=0.7--1.7 (median z=1.3). 19 these are submillimetre (SMGs) and 21 submillimetre-faint radio (SFRGs). This sample helps to fill in the redshift desert z=1.2--1.7 previous studies as well probing lower luminosity population galaxies. Radio fluxes used determine star-formation rates for our which range from around 50 500 M$_\odot$ yr$^{-1}$ generally than those z$\sim$2 SMGs. identify nebular [OII] 3727 emission rest-UV spectra use linewidths show that SMGs SFRGs have larger therefore dynamical masses optically selected star-forming similar redshifts. The indistinguishable measured SMG populations suggesting little evolution between 1--2. [NeV] [NeIII] lines identified subset indicating presence an active galactic nucleus (AGN). In addition, host interstellar absorption corresponding transitions MgII FeII ions also detected. These features up prominently composite we composites demonstrate average blueshift $-240\pm$50 kms$^{-1}$ relative systemic velocities derived [OII]. indicates large-scale outflowing gas systems (Abridged)