Table 2: Source list and detection summary.
IRAS RA (J2000) Dec. (J2000) $V_{\rm LSR}$ $d_{\rm kin}$ N2H+ $^{\dagger}$ N2D+ C17O DCO+ (sub-)mm
Source (h m s) ($^{\circ}$ ' '') (km s-1) (kpc)          
IRAS 05345+31571 05 37 52.4 32 00 06 -18.4 1.8 Y (0,-5) Y Y Y Y
IRAS 05373+23491 05 40 24.5 23 50 55 2.3 1.2 Y (-8,0) Y N Y Y
IRAS 18144-17231 18 40 24.5 -17 22 13 47.3 4.3 Y (-7,0) N Y(?) N Y
IRAS 18511+01461 18 53 38.1 01 50 27 56.8 3.9 Y (0,-5) Y $^{\clubsuit}$ Y Y Y
IRAS 18517+04372 18 54 13.8 04 41 32 43.9 2.9 Y (12,0) N Y N Ya
IRAS 19092+08411 19 11 38.6 08 46 30 58.0 4.5 Y (8,-4) N Y N Y
IRAS 20126+41042 20 14 26.0 41 13 32 -3.8 1.7 Y (-5,0) Y Y Y(?) Ya,b
IRAS 20216+41072 20 23 23.8 41 17 40 -2.0 1.7 Y (-5,5) Y Y N Ya,b
IRAS 20343+41292 20 36 07.1 41 40 01 11.5 1.4 Y (-8,4) (13,0) Y Y Y(?) Ya,b
IRAS 22172+55491 22 19 09.0 56 04 59 -43.8 2.4 Y (-5,0) Y $^{\clubsuit}$ Y N Y
1 $V_{\rm LSR}$ and $d_{\rm kin}$ from NH3 observations (Molinari et al. 1996). 2 $V_{\rm LSR}$ and $d_{\rm kin}$ from NH3 observations (Sridharan et al. 2002). $^{\dagger}$ Between brackets, the offset (in arcsec) of the N2H+ (1-0) line emission peak with respect to the map center (coordinates in Cols. 2 and 3) is given. $^{\clubsuit}$ Detected in the N2D+ (2-1) transition only. (?) Marginal detection. a Observed by Beuther et al. (2002) at 1.2 mm. b Observed by Williams et al. (2004) at 850 $\mu $m and/or 450 $\mu $m.

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