2.1 Working Definitions
The following definitions have been in wide use, and are adopted for the purpose of this debate:
| Lir: | L(8-1000 µm) |
| ULIG: | Lir 
1012 L (1)
|
| ``warm'': | f25 / f60 > 0.2 (as originally defined by de Grijp et al. 1985; also Low et al. 1998, Sanders et al. 1988b) |
| AGN: | A compact nuclear region producing energy by non-stellar processes. Also, a strong ``broad-line region" (BLR) with doppler motions > 2000 km s-1 (HWHM) from gas in a region < 1 pc in diameter. |
| RQQSO: | radio-quiet quasi-stellar object (L20cm /
L1µm
 10-5)
|
1 Lir
1012
L
is equivalent
to the minimum bolometric luminosity of a QSO, i.e. MB
-22.3 - which is equivalent to MB < -23
(Schmidt & Green 1983)
corrected for H0 =
75 km s-1 Mpc-1, q0 =
0 - and a bolometric correction for QSOs of
~ 11.8 x 
L (0.43 µm) (e.g.
Elvis et al. 1994;
see also
Sanders & Mirabel
1996).