Table A.4.
Number of possible isolated stars relative to nearby clusters, OB associations, and massive stars (solar metallicity and SMC-like extinction law setup)
| Sample | Method 1 | Method 2 | ||
|---|---|---|---|---|
| Number | Frequency | Number | Frequency | |
| clusters + OB associations (dthresh, 1) | ||||
| and stars (dthresh, 1) isolation | ||||
| D.O.F. = 4 | 31 | 0.132 | 31 | 0.132 |
| D.O.F. = 3 | 41 | 0.174 | 42 | 0.179 |
| D.O.F. = 2 | 6 | 0.026 | 7 | 0.0298 |
| whole sample | 78 | 0.332 | 80 | 0.340 |
| clusters + OB associations (dthresh, 1) | ||||
| and stars (dthresh, 2) isolation | ||||
| D.O.F. = 4 | 6 | 0.026 | 6 | 0.026 |
| D.O.F. = 3 | 20 | 0.085 | 20 | 0.085 |
| D.O.F. = 2 | 2 | 0.009 | 2 | 0.009 |
| whole sample | 28 | 0.119 | 28 | 0.119 |
| clusters + OB associations (dthresh, 2) | ||||
| and stars (dthresh, 1) isolation | ||||
| D.O.F. = 4 | 15 | 0.064 | 17 | 0.072 |
| D.O.F. = 3 | 29 | 0.123 | 32 | 0.136 |
| D.O.F. = 2 | 2 | 0.009 | 5 | 0.021 |
| whole sample | 46 | 0.196 | 54 | 0.230 |
| clusters + OB associations (dthresh, 2) | ||||
| and stars (dthresh, 2) isolation | ||||
| D.O.F. = 4 | 4 | 0.017 | 4 | 0.017 |
| D.O.F. = 3 | 17 | 0.072 | 17 | 0.072 |
| D.O.F. = 2 | 2 | 0.009 | 2 | 0.009 |
| whole sample | 23 | 0.098 | 23 | 0.098 |
Notes. Number and frequency of possible isolated stars relative to nearby star clusters, OB associations and massive stars and given the threshold distance of dthresh, 1 = 74 pc and dthresh, 2 = 204 pc. Method 1 takes into account only the de-projected positions of stars, clusters and OB associations, while method 2 considers stellar groups whose age difference is 5 Myr at most. The number of stars is 235 using a solar metallicity and an SMC-like extinction law.
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