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1 results

  • A Herschel Spectroscopic Survey of Warm Molecular Gas in Local Infrared Luminous Galaxies

  • N. Lu, Y. Zhao, C. K. Xu, Y. Gao, the GOALS FTS Team
  • Journal:
    Proceedings of the International Astronomical Union / Volume 8 / Issue S292 / August 2012
    Published online by Cambridge University Press:
    21 March 2013, p. 249
    Print publication:
    August 2012
    • Article
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  • We describe an on-going 194-671 μm spectroscopic survey of a flux-limited sample of 125 local luminous infrared galaxies (LIRGs) with Herschel SPIRE Fourier Transform Spectrometer (FTS). The survey targets primarily the CO spectral line energy distribution (SLED), from J = 4-3 up to J = 13-12, to probe dense and warm molecular gas that should play an intimate role in star formation and/or active galactic nuclear activities in these galaxies. The program is about 75% finished. At S/N > 5, besides the CO lines, we also detected [N ii] 205 μm and [C i] 370 μm (3P2 − 3P1) lines in every target observed. In about half of the observed targets, we also detected [C i] 609 μm (3P1 – 3P0).