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Table 2

Mid-IR spectral lines and diagnostics measured for IC 3639.

Line/diagnostic Value Ref.
[Ne V]14.3/[Ne II]12.8 0.25 ± 0.01 Tommasin et al. (2008)
0.33 ± 0.02a This work
[O Iv]25.9/[Ne II]12.8 0.47 ± 0.01 Tommasin et al. (2008)
0.63 ± 0.03a This work
[O Iv]25.9/([Ne II]12.8 + [Ne III]15.6) 0.29 ± 0.01 Fernández-Ontiveros et al. (2016)
[O Iv]25.9/[O III]88 0.51 ± 0.02 Fernández-Ontiveros et al. (2016)
EW(PAH6.2 μm) 0.185 ± 0.003 μm Wu et al. (2009)
EW(PAH7.7 μm) 1.39 μm LaMassa et al. (2012)
EW(PAH11.3 μm) 0.39 μm LaMassa et al. 2012
EW(PAH17 μm) 0.13 μm LaMassa et al. (2012)
0.14 Wu et al. (2009), LaMassa et al. (2012)
0.29 LaMassa et al. (2012)
Ssil −0.312 Wu et al. (2009)
~0.007 This work
~1.05 This work

Notes. Thetable includes: line ratios, equivalent width (EW) of diverse PAH features, flux ratios of different PAH complexes, strength of the silicate absorption band at 9.7 μm (Ssil ), and ratios of PAH to integrated continuum. (a) Using the [Ne ii]12.8 μm flux measured in the VISIR spectrum.

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