The basic data of the survey are the spectra obtained point by point
in longitude and latitude, comprising therefore a data cube or
three dimensional array of antenna temperatures.
A two dimensional representation of the
array was obtained by integrating the emission over the whole velocity
span,
between -320 and +320 km s-1, to produce a spatial map useful to
compare the molecular gas distribution, as traced by the CO(
)
transition, with that of infrared and radio continuum emission. Such map is
shown in Fig. 2 (click here), where the contour interval is set to 65 K km s-1.
The data are further displayed in longitude-velocity diagrams of the CO emission (Fig. 3 (click here)), one for each observed latitude. This representation is particularly useful to identify kinematic structures and follow their development with galactic latitude. Contours are separated by 1 K, and the lowest contour is set at 0.5 K. The latitude structure of the CO emission is presented in latitude-velocity diagrams (Fig. 4 (click here)), one for each observed longitude, with the same contour levels of Fig. 3 (click here). The velocity and latitude limits of the observations are indicated by a broken line.