The BU-FCRAO Galactic Ring Survey: Third Data Release

The Boston University-Five College Radio Astronomy Observatory Milky Way Galactic Ring Survey continues to map J=1rightarrow 0 ¹³CO emission in the First Galactic Quadrant with an excellent combination of sensitivity (0.2 K), angular resolution (45 arcsec), and spectral resolution (0.2 km s^-1). The GRS constitutes a superb database to investigate molecular cloud structure since it covers large areas of the sky on a completely sampled grid. Here we present images from our Third Release data (www.bu.edu/grs), covering 50 square degrees from 15°>l>52° & mid bmid≤ 1°.