Molecular gas distribution and dynamics in the luminous merger NGC 6240

被引：0

作者：

L.J. Tacconi

R. Genzel

M. Tecza

J.F. Gallimore

D. Downes

N.Z. Scoville

机构：

[1] Max-Planck-Institut für extraterrestrische Physik (MPE),105

[2] National Radio Astronomy Observatory (NRAO),24

[3] Institut de Radio Astronomie Millimétrique (IRAM),undefined

[4] California Institute of Technology,undefined

来源：

Astrophysics and Space Science | 1999年 / 266卷

关键词：

Line Width; Thick Disk; Dynamical Mass; Velocity Width; Interact Galaxy;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

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.

引用

页码：157 / 162

页数：5

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