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28 March 2024
 
  » arxiv » astro-ph/0308101

 Article overview


Circumnuclear Shock and Starburst in NGC 6240: Near-IR Imaging and Spectroscopy with Adaptive Optics
Tamara Bogdanovic ; Jian Ge ; Claire E. Max ; Lynne M. Raschke ;
Date 6 Aug 2003
Journal Astron.J. 126 (2003) 2299
Subject astro-ph
Affiliation2,3), Lynne M. Raschke ( Penn State University, LLNL, Center for Adaptive Optics, UCSC
AbstractWe have obtained adaptive optics, high spatial resolution (0.15 arcsecond) K-band spectra and images of the region around the two active nuclei in NGC 6240 which show the presence of circumnuclear shocks. The data are consistent with the thermal excitation mechanism being the dominant one in the nuclear region. UV fluorescence and associative detachment may also contribute to the fraction of the energy emitted through molecular hydrogen transitions. The near-IR continuum emission appears closely associated with the two active nuclei. The morphological similarities between the near-IR images and the Chandra X-ray images indicate the same mechanisms may be responsible for the emission in near-IR and X-ray band.
Source arXiv, astro-ph/0308101
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