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CO (3-2) emission from the nucleus of NGC 6946

Rosenthal, E., Eales, Stephen Anthony, Stephens, S. and Lo, K. Y. 1990. CO (3-2) emission from the nucleus of NGC 6946. Presented at: Kona Symposium on Millimetre and Submillimetre Astronomy, Kona, Hawaii, 3–6 October 1988. Published in: Watt, Graeme D. and Webster, Adrian S. eds. Submillimetre Astronomy: Proceedings of the Kona Symposium on Millimetre and Submillimetre Astronomy. Astrophysics and Space Science Library , vol. 158. Dordrecht: Springer Netherlands, pp. 241-242. 10.1007/978-94-015-6850-0_92

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We have observed the 12CO (J= 3-2) emission from the nucleus of the nearby spiral galaxy NGC 6946 using the James Clerk Maxwell Telescope (JCMT) at a resolution of 15″ (0.7 kpc). CO emission is clearly detected at the nucleus, 12″ south along the molecular bar (Ball et al. 1985), and 12″ west perpendicular to the molecular bar. The peak beam-averaged brightness temperature (Tmb) is 1.4 ± 0.5 K at the nucleus and 1.0 ± 0.4 K on average at the other two positions. Comparison with 1-0 mapping from Nobeyama using the same beamsize (Doi et al. 1988) shows that the (3-2)/(1-0) intensity ratio is 1.0 ± 0.5 on average at the three positions.

Item Type: Conference or Workshop Item (Paper)
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QB Astronomy
Publisher: Springer Netherlands
ISBN: 9789401568524
Last Modified: 04 Jun 2017 05:11

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