| |
 |
| Paper: |
Spatially-resolved Measurement of Hydrogen Volume Density in the Central Molecular Zone of the Milky Way |
| Volume: |
528, New Horizons in Galactic Center Astronomy and Beyond |
| Page: |
329 |
| Authors: |
Tanaka, K. |
| Abstract: |
We present the results of spatially resolved measurement of hydrogen volume density in the CMZ obtained through excitation study using 13 archival and newly-obtained molecular line data, whee a newly-developed hierarchical parameter inference technique is used to suppress artifacts from the deficiency in simple one-zone LVG analysis. The main results are: (1) CMZ clouds are generally affected by shock-waves, as indicated by the spatial correlation between the temperature variation and that in the abundances of shock-tracer molecules. (2) Statistical discriminant analysis has shown that the parameters that distinguish the clouds with signatures of star formation from quiescent clouds are the virial parameter and volume density. |
|
|
|
|
|
