Table 4.
Stellar parameters and accretion variability.
| Object (1) | Epochs (2) | M | log(τ) | log(⟨Ṁacc⟩)(3) | Δlog(Ṁacc)(4) | ΔIQR log(Ṁacc)(5) | COUP (6) |
|---|---|---|---|---|---|---|---|
| [M⊙] | [yr] | [M⊙/yr] | [dex] | [dex] | |||
| V358 Ori | 15 | 1.57 ± 0.02 | 6.54 ± 0.02 | −8.13 ± 0.05 | 0.17 ± 0.40 | 0.09 ± 0.10 | 1269 |
| KZ Ori | 20 | 1.46 ± 0.04 | 6.33 ± 0.02 | −8.38 ± 0.05 | 0.33 ± 0.47 | 0.10 ± 0.10 | 188 |
| V1444 Ori | 19 | 1.51 ± 0.05 | 6.13 ± 0.03 | −7.96 ± 0.05 | 0.13 ± 0.43 | 0.04 ± 0.09 | 23 |
| V401 Ori | 12 | 1.24 ± 0.02 | 6.86 ± 0.06 | −7.44 ± 0.06 | 1.28 ± 0.30 | 0.34 ± 0.14 | 62 |
| MZ Ori | 5 | 0.88 ± 0.05 | 6.38 ± 0.06 | −7.61 ± 0.14 | 0.44 ± 0.41 | 0.30 ± 0.21 | 1134 |
| V488 Ori | 13 | 0.79 ± 0.03 | 5.89 ± 0.02 | −7.60 ± 0.08 | 0.68 ± 0.47 | 0.32 ± 0.15 | 567 |
| V2057 Ori | 15 | 0.80 ± 0.02 | 6.97 ± 0.03 | −8.44 ± 0.06 | 1.89 ± 0.39 | 0.38 ± 0.12 | 54 |
| JW 117 | 19 | 0.49 ± 0.02 | 5.77 ± 0.01 | −7.64 ± 0.05 | 0.54 ± 0.35 | 0.33 ± 0.09 | 58 |
| LN Ori | 10 | 0.65 ± 0.02 | 6.40 ± 0.01 | −8.25 ± 0.06 | 0.93 ± 0.32 | 0.23 ± 0.11 | 301 |
| V1550 Ori | 7 | 0.56 ± 0.03 | 6.06 ± 0.02 | −7.95 ± 0.15 | 1.18 ± 0.36 | 0.45 ± 0.16 | 1421 |
| V2023 Ori | 16 | 0.58 ± 0.02 | 6.11 ± 0.01 | −8.43 ± 0.05 | 0.71 ± 0.28 | 0.30 ± 0.08 | 28 |
| V1531 Ori | 5 | 0.44 ± 0.03 | 5.72 ± 0.01 | −8.36 ± 0.07 | 0.44 ± 0.21 | 0.13 ± 0.12 | 1248 |
| V417 Ori | 5 | 0.43 ± 0.03 | 5.68 ± 0.02 | −7.81 ± 0.11 | 0.82 ± 0.25 | 0.40 ± 0.16 | 1333 |
| V1481 Ori | 11 | 0.36 ± 0.02 | 5.59 ± 0.02 | −8.57 ± 0.04 | 0.52 ± 0.22 | 0.20 ± 0.09 | 202 |
| V2420 Ori | 16 | 0.34 ± 0.01 | 5.78 ± 0.02 | −8.26 ± 0.06 | 1.61 ± 0.25 | 0.58 ± 0.12 | 1282 |
| V2080 Ori | 14 | 0.47 ± 0.01 | 6.28 ± 0.02 | −9.21 ± 0.05 | 1.04 ± 0.23 | 0.44 ± 0.10 | 112 |
| V2400 Ori | 17 | 0.34 ± 0.01 | 5.87 ± 0.02 | −8.65 ± 0.03 | 0.46 ± 0.24 | 0.18 ± 0.07 | 1236 |
| V1477 Ori | 8 | 0.35 ± 0.02 | 5.91 ± 0.02 | −8.63 ± 0.05 | 0.44 ± 0.23 | 0.32 ± 0.11 | 139 |
| V1552 Ori | 13 | 0.36 ± 0.02 | 5.99 ± 0.02 | −8.93 ± 0.07 | 1.19 ± 0.29 | 0.24 ± 0.10 | 1432 |
| V786 Ori | 16 | 0.33 ± 0.01 | 5.91 ± 0.02 | −8.45 ± 0.04 | 1.13 ± 0.23 | 0.65 ± 0.10 | 179 |
| V1475 Ori | 9 | 0.43 ± 0.02 | 6.29 ± 0.03 | −9.27 ± 0.05 | 0.45 ± 0.22 | 0.29 ± 0.10 | 132 |
| V1555 Ori | 5 | 0.28 ± 0.02 | 5.84 ± 0.03 | −8.42 ± 0.10 | 0.52 ± 0.32 | 0.16 ± 0.17 | 1454 |
| V1493 Ori | 6 | 0.28 ± 0.02 | 6.01 ± 0.02 | −8.94 ± 0.09 | 0.47 ± 0.34 | 0.40 ± 0.18 | 546 |
Notes. (1)Name of the YSO as listed in SIMBAD. The rows are sorted by descending Teff values. (2)The mean baseline covered by the epochs amounts to ∼755 days. (3)Mean value of the accretion rates. (4)Variability range defined as Δlog(Ṁacc) = log(Ṁacc, max) − log(Ṁacc, min). (5)Interquartile range defined as the difference between the upper and the lower quartile of the logarithmic accretion rates. (6)COUP source number as listed in J/ApJS/160/319/coup (Getman et al. 2005).
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