Table 1: Field O stars in newly detected clusters. The asterisk indicates that the star is found in a region with star formation signposts (see Sect. 4.3). In Col. 2 we give the visual multiplicity (VM) of the stars, adopted from M98 and G87; VMS = Visual Multiple Star. In Col. 3 we use the following abbreviations for the spectroscopic multiplicity (SM): C = constant radial velocity, SB1 = single-lined spectroscopic binary, SB2 = double-lined spectroscopic binary. Addition of an "O'' and/or "E'' indicates that the orbit is known and/or an eclipsing system. A colon indicates uncertainty.
Name VM SM $I_{\rm C}$ Radius $\log(\rho_{\rm I_{C}})$

(pc) ( $\rm stars~pc^{-3}$ )

HD 52266^* single SB1? $4\pm2$ 0.10 $2.0\pm1.0$

HD 52533^* VMS SB1O $15\pm5$ 0.30 $2.5\pm0.9$

HD 57682 single C $4\pm5$ - -

HD 153426 single SB2: $5\pm4$ - -

HD 195592^* single SB1? $18\pm3$ 0.25 $2.6\pm0.8$

**Table 1:** Field O stars in newly detected clusters. The asterisk indicates that the star is found in a region with star formation signposts (see Sect. 4.3). In Col. 2 we give the visual multiplicity (VM) of the stars, adopted from M98 and G87; VMS = Visual Multiple Star. In Col. 3 we use the following abbreviations for the spectroscopic multiplicity (SM): C = constant radial velocity, SB1 = single-lined spectroscopic binary, SB2 = double-lined spectroscopic binary. Addition of an "O'' and/or "E'' indicates that the orbit is known and/or an eclipsing system. A colon indicates uncertainty.
Name	VM	SM	$I_{\rm C}$	Radius	$\log(\rho_{\rm I_{C}})$
				(pc)	( $\rm stars~pc^{-3}$ )
HD 52266^*	single	SB1?	$4\pm2$	0.10	$2.0\pm1.0$
HD 52533^*	VMS	SB1O	$15\pm5$	0.30	$2.5\pm0.9$
HD 57682	single	C	$4\pm5$	-	-
HD 153426	single	SB2:	$5\pm4$	-	-
HD 195592^*	single	SB1?	$18\pm3$	0.25	$2.6\pm0.8$

Source LaTeX | All tables | In the text

	1 Introduction
	2 Main results from Paper I
	3 The field O stars as candidate runaway stars
	4 Discussion
	5 Conclusion
	Appendix A: Clusters near HD 52533 and HD 195592
	References