Disk-Halo interface: The "foot point" of the Galactic Molecular Loops

Abstract

We study the disk-halo interaction, in the context of orbits and Giant Molecular loops (GMLs) in the Galactic center (GC) region. We present a large scale survey in the central kpc in SiO(J=2-1), HCO${}^{+}$(J=1-0) and H${}^{13}$CO${}^{+}$ (J=1-0), observations in 3mm lines toward a region in two clumps M+5.3-0.3 and M-3.8+0.9 placed in the foot point of two molecular loops, and observations toward selected positions, to trace accretion of the gas from the halo

Proceedings of the Galactic Center Workshop 2009, Shanghai. To be published in the Astronomical Society of the Pacific Conference Series