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| Paper: |
XDR Chemistry in the Circumnuclear Disk of NGC 1068 |
| Volume: |
320, The Neutral ISM in Starburst Galaxies |
| Page: |
273 |
| Authors: |
Usero, A.; Garcia-Burillo, S.; Fuente, A.; Martin-Pintado, J. |
| Abstract: |
We have studied the feedback influence that the central engine of the Seyfert 2 galaxy NGC 1068 may have on the chemistry of the 200 pc circumnuclear gas disk (CND). With this purpose, we have conducted a multispecies/ multi-transition survey of molecular gas in the CND of NGC 1068 using the IRAM 30m telescope. Abundances of several molecular species have been estimated, including HCN, CN, CS, HCO+, SiO and HOC+. We report on the detection of significant SiO emission in this galaxy, as well as on the first extragalactic detection of the active radical HOC+. We conclude that the chemistry of the molecular gas reservoir in the CND can be best explained in the framework of X-ray Dominated Region (XDR) models. |
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