Table A.6.
Number of possible isolated stars relative to nearby clusters, OB associations, and massive stars (SMC-like 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 | 39 | 0.127 | 39 | 0.127 |
| D.O.F. = 3 | 58 | 0.190 | 59 | 0.193 |
| D.O.F. = 2 | 7 | 0.023 | 7 | 0.023 |
| whole sample | 104 | 0.340 | 105 | 0.343 |
| clusters + OB associations (dthresh, 1) | ||||
| and stars (dthresh, 2) isolation | ||||
| D.O.F. = 4 | 12 | 0.039 | 12 | 0.039 |
| D.O.F. = 3 | 25 | 0.082 | 25 | 0.082 |
| D.O.F. = 2 | 3 | 0.010 | 3 | 0.010 |
| whole sample | 40 | 0.131 | 40 | 0.131 |
| clusters + OB associations (dthresh, 2) | ||||
| and stars (dthresh, 1) isolation | ||||
| D.O.F. = 4 | 20 | 0.065 | 23 | 0.075 |
| D.O.F. = 3 | 36 | 0.118 | 42 | 0.137 |
| D.O.F. = 3 | 3 | 0.010 | 3 | 0.010 |
| whole sample | 59 | 0.193 | 68 | 0.222 |
| clusters + OB associations (dthresh, 2) | ||||
| and stars (dthresh, 2) isolation | ||||
| D.O.F. = 4 | 9 | 0.029 | 9 | 0.029 |
| D.O.F. = 3 | 17 | 0.056 | 18 | 0.059 |
| D.O.F. = 2 | 3 | 0.010 | 3 | 0.010 |
| whole sample | 29 | 0.095 | 30 | 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 306 using an SMC-like metallicity and an SMC-like extinction law.
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