A. Summary tables
We present here tables that summarize various param-
eters of
the studied sources: coordinates determined as explained in Sect. 2.2,
IRAS properties (variability, LRS, fluxes), spectral types, OH detections, and
the 
ratio. These tables are the basis of the
statistical analysis and are referenced in the text.
The list of objects is divided according to the following: first, the
observations performed before 1994 and published by several authors are
presented, with the ratio using a
a correction for the surface of the antenna; then, we present our own
observations, starting with the main sample studied here, and continuing with
miscellanous objects.
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Figure 11: CO(1-0) and CO(2-1) spectra of the objects detected during the
3rd run (IRAM 30 m)
Figure 12: CO(1-0) and CO(2-1) spectra of the objects detected during the
4th run (IRAM 30 m)
bright
(
oxygen-rich sources in regions IIIa1
and IIIa2 from Omont et al. (1993) detected in CO(1-0)
before 1994. The 
)
bright 
oxygen-rich sources in
regions IIIa1 and IIIa2 detected in
CO(1-0) before 1994. The 
). The positions given in italic are
from the IRAS-PSC; the other ones were measured by ourselves
(see text). When necessary, the 
was replaced by 2 
rms. Values marked by a star (*) correspond to observations affected by interstellar
contamination. Some spectral types were determined from observations made at Lick Observatory (see
text). The others were found in SIMBAD. The references concerning the OH observations correspond to: (1) this paper; (2) Le Squeren et al. (1992);
(3) te Lintel Hekkert et al. (1991); (4) Sivagnanam et al. (1990); (5) Lewis et al. (1990); (6) Galt et al. (1989); (7) te Lintel Hekkert et al. (1989);
(8) Eder et al. (1988); (9) Lewis et al. (1987); (10)
Ukita &
ratio, the rms is
corrected for the surface when the observation was made at SEST (noted with a !).
Only the significative non-detections (i.e. with 
) are
reported here