Molecular gas distribution and dynamics in the luminous merger NGC 6240

被引：3

作者：

Tacconi, LJ ^{[1
]}

Genzel, R

Tecza, M

Gallimore, JF

Downes, D

Scoville, NZ

机构：

[1] Max Planck Inst Extraterr Phys, D-85748 Garching, Germany

[2] Natl Radio Astron Observ, Charlottesville, VA 22903 USA

[3] Inst Radio Astron Millimetr, F-38406 St Martin Dheres, France

[4] CALTECH, Pasadena, CA 91125 USA

来源：

ASTROPHYSICS AND SPACE SCIENCE | 1999年 / 266卷 / 1-2期

关键词：

D O I：

10.1023/A:1002614118115

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

We present the results of our subarcsecond resolution interferometric observations of the 1.3 mm CO J = 2-->1 line in the luminous merger NGC 6240. Roughly half of the CO flux is contained in a rotating and highly turbulent thick disk centered between the two radio and near-infrared nuclei. In this disk the molecular gas has velocity widths which reach FWZP line widths of up to 1000 km s(-1). The mass of this gas concentration makes up between 30%-70% of the dynamical mass in this region. NGC 6240 may be in an earlier merging stage than typical ULIRGs such as Arp 220. We compare these results from NGC 6240 with those of other luminous, gas-rich interacting galaxies and mergers.

引用

页码：157 / 162

页数：6

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