HI and OH absorption toward NGC 6240

Details HI and OH absorption toward NGC 6240 HI and OH absorption toward NGC 6240

Feb 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007newar..51...58h&link_type=abstract

New Astronomy Reviews, Volume 51, Issue 1-2, p. 58-62.

Astronomy and Astrophysics

Astronomy

1

Scientific paper

We present results of HI and OH absorption imaging of the merging galaxy of NGC 6240 using the very large array at 1 arcsec resolution. HI absorption is found across the extended radio continuum structure with a significant concentration towards the two nuclei, while the OH absorption is confined mostly between the nuclei. The OH velocity gradients around the nuclei confirm earlier results of radio molecular emission lines in defining the central gas peak between the nuclei and the kinematics of the nuclear region. The HI velocity gradients might trace remnants of the two interacting galaxies and the characteristics of a symmetric superwind outflow. The absorbing gas provides a key to solve kinematics of two merging galaxies.

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