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
2 comparison of observed radio-FIR ratio (corrected for free-free absorption) with ``pure starburst'' ratio: i.e. 100 x 102.34-q0. The computed quantity q0 q + (0 - ) log(8.44/1.49) (Condon et al. 1991) is based on the observed value q log[(FIR / 3.75 x 1012 Hz) / S1.49 GHz] where FIR is the sum of the 60 µm and 100 µm IRAS fluxes, and q0 = 2.34 and 0 = 0.7 are the mean values for starburst galaxies (Condon, Anderson & Helou 1991).
3 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