Other
Scientific paper
Jan 1993
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993egte.conf..195w&link_type=abstract
In NASA. Ames Research Center, The Evolution of Galaxies and Their Environment p 195-196 (SEE N93-26706 10-90)
Other
Emission Spectra, Infrared Spectra, Luminescence, Morphology, Radio Observation, Solar Radiation, Spectral Resolution, Spectroscopy, Galaxies, Hydrogen, Infrared Radiation, Molecular Gases, Near Infrared Radiation, Starburst Galaxies
Scientific paper
NGC6240 is a member of the class of luminous galaxies which emit a significant fraction of their total light in the infrared. Based on its highly disturbed morphology, Fosbury and Wall (1979) suggested that the system may be a merger of two gas rich galaxies. It has two nuclei separated by 2 arcsec which are visible in the near infrared and at radio wavelengths and CO observations show that the galaxy contains a large mass of molecular gas. Unusually strong H2 emission lines dominate the near infrared spectrum of this galaxy. The galaxy emits approximately 4x10(exp 7) solar luminosity in the 2.12 micron v = 1 to 0 S(1) line alone, an order of magnitude more than other merging or starburst galaxies. To provide a better understanding of the physical processes responsible for the H2 emission from NGC6240 we have begun a program to obtain high spectral resolution observations using the echelle in CGS4 on the UKIRT. Preliminary data which were obtained in February 1991 are presented here. It is intended to obtain further observations with twice the spatial and spectral resolution in June of this year.
Geballe Thomas Ronald
Graham James R.
Wright Gillian S.
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