3.1 Multiwavelength Properties of the Nearest ULIGs

Table 2 lists the radio-to-X-ray properties of the five nearest ULIGs, including the latest high-resolution radio data from the VLA and VLBA and X-ray data from ASCA. In addition to the extensive notes included with Table 2, a brief summary of properties by wavelength band is given below.

¹ The 5 nearest ULIGs in the IRAS Bright Galaxy Survey (BGS: Soifer et al. 1987).
² comparison of observed radio-FIR ratio (corrected for free-free absorption) with ``pure starburst'' ratio: i.e. 100 x 10<sup>2.34-q<sub>0</sub></sup>. The computed quantity q<sub>0</sub> q + (<sub>0</sub> - ) log(8.44/1.49) (Condon et al. 1991) is based on the observed value q log[(FIR / 3.75 x 10<sup>12</sup> Hz) / S<sub>1.49 GHz</sub>] where FIR is the sum of the 60 µm and 100 µm IRAS fluxes, and q<sub>0</sub> = 2.34 and <sub>0</sub> = 0.7 are the mean values for starburst galaxies (Condon, Anderson & Helou 1991).
<sup>3</sup> large scale (25-50 kpc) 21 cm AGN-like radio ``plumes'' detected (M. Yun, private communication)
⁴ AGN-like radio core fraction at = 3.6 cm (Smith, Lonsdale & Lonsdale 1998)
⁵ radio core morphology at = 3.6 cm (Smith, Lonsdale & Lonsdale 1998)
⁶ relative strength of 158 µm C⁺ line compared to starburst mean (J. Fischer, private communication)
⁷ mid-IR spectral type determined from relative strength of the 7.7 µm PAH feature (Genzel et al. 1998; Lutz et al., these proceedings)
⁸ evidence for broad line region at Pa or Pa, and/or strong evidence for [Si VI]1.962 emission (Veilleux, Sanders & Kim 1997, 1999)
⁹ percent polarization of BLR (D. Hines, private communication)
¹⁰ optical spectral type (Veilleux et al. 1995; Veilleux, Kim & Sanders 1999)
¹¹ continuum reddening measure, log C₆₅₆₅/C₄₈₆₁ (Veilleux et al. 1995; Veilleux, Kim & Sanders 1999)
¹² log[L(2 - 10 keV) / L(8 - 1000 µm)]
¹³ log[L(5 - 10 keV)] ergs s^-1