Galactic Center Molecular Clouds. I. Spatial and Spatial-Velocity Maps.

We present maps showing the distribution of molecular gas in the Galactic center region. Emission from the 110 GHz J = 1-0 transition of (13)CO in the region -5degrees l 5degrees and -0.6 b 0.6 was mapped on a 6' grid. The inner portions of the Galactic center region, from -0.5 l 0.9 and -0.4 b 0.4, including the Sgr A and Sgr B2 complexes, are sampled on a 1' grid. We also present a map in the J = 1 - 0 C(18)O 110 GHz transition, including Sgr A and the "+20 km s(-1) cloud". High density molecular gas in the vicinity of Sgr A is shown in maps of the J = 2 - 1 98 GHz transition of CS, the 5(05) - 4(04) 110 GHz transition of HNCO, and the J = 6 - 5 110 GHz transitions of CH(3)CN. A J = 6 - 5 CH(3)CN map is presented for the Sgr B2 region.