Abstract
We present the results of our subarcsecond resolution interferometricobservations of the 1.3 mm CO J = 2→1 line in the luminous merger NGC6240. Roughly half of the CO flux is contained in a rotating and highlyturbulent thick disk centered between the two radio and near-infrarednuclei. In this disk the molecular gas has velocity widths which reachFWZP line widths of up to 1000 km s-1. The mass of this gasconcentration makes up between 30%–70% of the dynamical mass in thisregion. NGC 6240 may be in an earlier merging stage than typical ULIRGssuch as Arp 220. We compare these results from NGC 6240 with thoseof other luminous, gas-rich interacting galaxies and mergers.
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References
Barnes, J.E., and Hernquist, L. (1996) ApJ, 471, 115
Bloemen, H. (1989) ARA \(\& \) A, 27, 469
Bryant, P.M. and Scoville, N.Z. (1999) AJ, submitted
Casoli, F., Dupraz, C. and Combes, F. (1992) A \(\& \) A, 264, 55
Colbert, E.J.M., Wilson, A.S. and Bland-Hawthorn, J. 1994 ApJ, 436, 89
Downes, D. and Solomon, P.M. (1998) ApJ, 507, 615
Egami, E. et al. 1999 in preparation
Fried, J.W. and Schulz, H. (1983) A \(\& \) A, 118, 166
Genzel, R., Lutz, D. and Tacconi, L.J. (1998) Nature, 395, 859
Joseph, R.D., Wright, G.S. and Wade, R. (1984) Nature, 311, 132
Mihos, J.C. and Hernquist, L. (1996) ApJ, 464, 641
Sakamoto, K., Scoville, N.Z., Yun, M.S., Crozas. M., Genzel, R. and Tacconi, L.J. (1999) ApJ, March 1
Sanders, D.B., Soifer, B.T., Elias, J.H., Madore, B.F., Matthews, K., Neugebauer, G. and Scoville, N.Z. (1988) ApJ, 325, 74
Sanders, D.B. and Mirabel, I.F. (1996) ARA \(\& \) A, 34, 749
Scoville, N.Z., Yun, M.S. and Bryant, P.M. (1997) ApJ, 484, 702
Tacconi, L.J., Genzel, R., Tecza, M., Gallimore, J.F., Downes, D., and Scoville, N.Z. (1999) ApJ, submitted
Stanford, S.A., Sargent, A.I., Sanders, D.B., and Scoville, N.Z. (1990) ApJ, 349, 492
Tecza, M., et al. (1999) in preparation
Thronson, H.A., Majewski, S., Descartes, L. and Hereld, M. (1990) ApJ, 364, 456
van der Werf, P.P., Genzel, R., Krabbe, A., Blietz, M., Lutz, D., Drapatz, S., Ward, M. and Forbes, D.A. (1993) ApJ, 405, 522
Wang, Z., Scoville, N.Z. and Sanders, D.B. (1991) ApJ, 368, 112
Yun, M.S., Scoville, N.Z., and Knop, R.A. (1994) ApJL, 430, 109
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Tacconi, L., Genzel, R., Tecza, M. et al. Molecular gas distribution and dynamics in the luminous merger NGC 6240. Astrophysics and Space Science 266, 157–162 (1999). https://doi.org/10.1023/A:1002614118115
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DOI: https://doi.org/10.1023/A:1002614118115