Longitude–velocity map, ¹²COJ = 1 − 0 (115 GHz) emission survey of Dame et al. (2001). GSH 304-00-12 and GSH 305+01-24 are marked by ellipses located at their cataloged positions whose sizes are determined by their angular diameters and velocity widths. As in Fig. 4, stars of high- and low-reddening at 1 kpc are indicated by the red open and black filled circles, respectively, and blue cross symbols are for stars between 1 and 4 kpc. Intrinsically bright stars with M_V < − 5.5 mag are shown with black 5-pointed star symbols. The position of NGC 4755 is shown with large yellow circle outlined with black. See the electronic edition for a color version of the figure.