Multi-Wavelength Studies of Inner Galactic Gas Clouds in Clump 2: IGGC 22

Abstract

The inner few hundred parsecs of the galaxy are dominated by the Central Molecular Zone (CMZ) containing the densest concentration of gas and dust in the Galaxy, and at the very center of which lies a massive black hole. Farther out from the center, to about 400 parsecs, is the region called Inner Galaxy (IG) whose dynamics are dominated by the gravitational potential of the Galactic Bar. Material that slowly falls from the outer parts of the Galaxy towards the plane encounters extreme physical conditions. Dust and molecular material form dense massive clouds, the so-called Inner Galactic Gas Clouds (IGGC). We are using Herschel HIFI and PACS [CII], [NII], [OI], [OIII], and high-J CO emission line observations in focused regions near the Galactic Center supplemented by Herschel and Spitzer photometric data and MOPRA molecular line observations. This poster will present the current status of our ongoing analysis to investigate the physical processes underway in the gas knots IGGC 22 in Clump 2.