Parallaxes for star forming regions in the inner Perseus spiral arm

We report trigonometric parallaxand proper motionmeasurements of 6.7-GHz CH3OH and 22-GHz H2O masersin eight high-mass star-forming regions (HMSFRs) based on VLBA observations as part of the BeSSeL Survey. The distances of these HMSFRs combined with their Galactic coordinates, radial velocities, and proper motions, allow us to assign them to a segment of the Perseus armwith ~< 70 deg. These HMSFRs are clustered in Galactic longitudefrom ~30 deg to ~50, neighboring a dirth of such sources between longitudes~50 deg to ~90 deg.