Publisher
EDP SCIENCES S ACitation
Qiu, J., Wang, J., Shi, Y., Zhang, J., Fang, M., & Li, F. (2018). Deep millimeter spectroscopy observations toward NGC 1068. Astronomy & Astrophysics, 613, A3. https://doi.org/10.1051/0004-6361/201731035Journal
ASTRONOMY & ASTROPHYSICSRights
© ESO 2018. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
Aims. We aim for a better understanding of gas properties in the circum-nuclear disk (CND) region of the nearby gas-rich Seyfert 2 galaxy NGC 1068. We focus on line identification and the basic physical parameters estimation of molecular gas in the CND region. Methods. We used the IRAM 30 m telescope to conduct deep millimeter spectroscopy observations toward the center of NGC 1068. Results. Thirty-two lines were detected in this galaxy, 15 lines of wich were detected for the first time. With a sensitivity better by about a factor of 4 than observations in the literature for this source at 3 mm band, we detected several weak lines for the first time in this source, such as lines from CH3CCH, CH3OCH3, and (HCO+)-O-18. Column densities of these molecules were estimated based on line emissions. Some marginal detections in the literature, such as (HNC)-C-13 (1-0), were confirmed. CH3OCH3 was detected for the first time in external galaxies. Lines from several carbon chain molecules and shock-related molecules were also detected in this source.Note
Open access journal.ISSN
0004-63611432-0746
Version
Final published versionSponsors
National Key R&D Program of China [2017YFA0402704]; Natural Science Foundation of China [11590783, 11473007, 11590782]; NSFC [11373021]; Excellent Youth Foundation of Guangdong Province [YQ2015128]; Guangzhou Education Bureau [1201410593]Additional Links
https://www.aanda.org/10.1051/0004-6361/201731035ae974a485f413a2113503eed53cd6c53
10.1051/0004-6361/201731035
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Except where otherwise noted, this item's license is described as © ESO 2018. Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License.