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| Paper: |
Around the Ring We Go: The Cold, Dense Ring of Molecular Gas in NGC 1614 |
| Volume: |
499, Revolution in Astronomy with ALMA: The Third Year |
| Page: |
141 |
| Authors: |
Sliwa, K.; Wilson, C. D.; Iono, D.; Peck, A. B.; Matsushita, S. |
| Abstract: |
We have constrained the molecular gas physical conditions in the local luminous infrared galaxy NGC 1614 using Cycle 0 ALMA observations combined with new and published Submillimeter Array and CARMA observations. Our results reveal that cold (20-60K), dense (>103 cm–3) molecular gas is responsible for the CO emission across the entire ring structure seen in NGC 1614. The [12CO]/[13CO] abundance ratio over the ring is found to be unusually high (>150), consistent with recent results for other LIRGs. We also find that the 12CO-to-H2 conservation factor in the ring ranges from 0.9- 1.5 αco. These values are intermediate between recent results for other LIRGs and the Milky Way, perhaps pointing to the expected evolution of the conversion factor with merger stage. |
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