We present new multi-transition mapping of the molecular gas in the nearest dwarf starburst galaxy, the Local Group dwarf IC 10. Using the IRAM 30-m telescope, we have mapped the CO(1-0), CO(2-1), and 13CO(1-0) transitions over the whole area of the disk. We followed up these observations with targeted ARO SMT spectroscopy of the CO(2-1) and 13CO(2-1) transitions. Together these give the most complete, sensitive view of the internal conditions in the molecular gas of a dwarf starburst galaxy to date. We present the resolved CO line ratios for this dwarf starburst and discuss their implications for the excitation, density, and optical thickness of the CO-emitting molecular gas. We consider both basic LTE calculations and comparing to the results of LVG (Radex) modeling.
American Astronomical Society Meeting Abstracts #227
- Pub Date:
- January 2016