Massachusetts--Stony Brook Galactic Plane CO Survey. II. (l,V) Maps of the First Galactic Quadrant

Abstract

The Massachusetts-Stony Brook Galactic Plane CO Survey data set, consisting of 40,551 <SUP>12</SUP>CO J =1-0 spectra covering longitudes 8° -90° and latitudes -1.°05 to + 1°, is presented in longitude-velocity (l, V) format. Spectra from the 42 latitudes sampled were averaged to yield seven (l, V) gray scale maps with 18' latitude resolution. One contour (l, V) map along the Galactic equator is included to show the spatially clumpy nature of the CO emission. The integrated CO intensity is presented as a function of longitude for the 18' averaged data, and as a function of longitude and latitude in contour and gray scale maps at the full survey spatial resolution. The presentations of the data set contained here are most useful for comparison with other Galactic surveys of the first quadrant, for tracing out large-scale features, and for identifying emission-line velocities associated with continuum (e.g., radio and IRAS) sources.