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High Resolution Aperture Synthesis Observations of Molecular Gas in NGC1068

Planesas, P. and Scoville, N. Z. and Myers, S. T. (1991) High Resolution Aperture Synthesis Observations of Molecular Gas in NGC1068. In: Dynamics of Galaxies and their Molecular Cloud Distributions. IAU Symposium Proceedings Series. No.146. Kluwer , Dordrecht, p. 314. ISBN 9780792310969.

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We have obtained high resolution (2.9″∼260 pc) aperture synthesis imaging of NGC 1068 in the CO J = 1 → 0 line made with the Owens Valley mm Interferometer. The major features seen in CO are: (1) the inner spiral arms of molecular gas at ∼15″ radius (1.5 kpc) which originate from the ends of the central stellar bar, and (2) a compact source (∼3″) coincident with the Seyfert 2 nucleus. The components within 2 kpc of the galactic nucleus account for approximately 30% of the total molecular gas content in NGC 1068. The spiral arm CO emission is resolved into 38 discrete complexes which closely correlate with regions of strong Hα and 10 μm emission. The sizes of these structures range up to 500 pc and their masses derived from the CO line flux are 2×10^7−7×10^8M⊙. Somewhat smaller mass estimates are obtained from the virial theorem using the observed CO linewidths and sizes, suggesting that these complexes may be self-gravitating.

Item Type:Book Section
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Scoville, N. Z.0000-0002-0438-3323
Additional Information:© 1991 IAU.
Series Name:IAU Symposium Proceedings Series
Issue or Number:146
Record Number:CaltechAUTHORS:20181211-153947042
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Official Citation:Planesas, P., Z. Scoville, N., & T. Myers, S. (1991). High Resolution Aperture Synthesis Observations of Molecular Gas in NGC1068. Symposium - International Astronomical Union, 146, 314-314. doi:10.1017/S0074180900244355
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:91695
Deposited By: Tony Diaz
Deposited On:11 Dec 2018 23:58
Last Modified:19 Jan 2023 00:23

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