AffiliationUniv Arizona, Dept Astron
MetadataShow full item record
PublisherEDP SCIENCES S A
CitationQiu, 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/10.1051/0004-6361/201731035
JournalASTRONOMY & ASTROPHYSICS
Rights© ESO 2018 Open Access article, published by EDP Sciences, under the terms of the Creative Commons Attribution License
Collection InformationThis 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 firstname.lastname@example.org.
AbstractAims. 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.
NoteOpen access journal.
VersionFinal published version
SponsorsNational Key R&D Program of China [2017YFA0402704]; Natural Science Foundation of China [11590783, 11473007, 11590782]; NSFC ; Excellent Youth Foundation of Guangdong Province [YQ2015128]; Guangzhou Education Bureau