Table 1
Observed sample.
| Name | RA | Dec | V | K | SpTa | Ava | Sep.b | PAb | ΔmHαb | R projb,c | Classd | Ref. | Observation date | ||
| (J2000.0) | (arcsec) | (deg) | (arcmin) | NIFS | NIRI | ||||||||||
|
|
|||||||||||||||
| JW 63 | 05 34 43.0 | –05 20 07 | 14.81 | 10.1 | K6 | 1.58 | 0.27 | 0 | 1.5 | 8.99 | III | 1 | 2008 Feb. 16 | 2008 Feb. 16,19 | |
| JW 81 | 05 34 46.4 | –05 24 32 | 14.95 | 10.5 | M0 | 0.63 | 1.34 | 272 | 1.9 | 7.61 | III | 1 | 2010 Nov. 23 | 2010 Sept. 23 | |
| JW 128 | 05 34 52.2 | –05 22 32 | 15.46 | 9.6 | M2.5 | 1.13 | 0.39 | 215 | >0.6 | 6.14 | II | 1 | 2008 Feb. 17 | 2008 Feb. 19 | |
| JW 176 | 05 34 57.8 | –05 23 53 | 13.47 | 9.1 | K8 | 0.45 | 1.28 | 336 | >1.1 | 4.71 | II | 1, 2 | 2008 Mar. 07 | 2008 Feb. 24 | |
| JW 248 | 05 35 04.4 | –05 23 14 | 14.90 | 9.8 | M0.5-M2e | 0.75 | 0.90 | 320 | >3.7 | 3.04 | II | 1, 2 | 2010 Nov. 23 | 2010 Sept. 21 | |
| JW 391 | 05 35 12.8 | –05 20 44 | 14.63 | 9.9 | M1e | 0.00 | 0.29 | 94 | >3.3 | 2.81 | II | 1 | 2008 Feb. 19 | 2008 Feb. 19 | |
| JW 709 | 05 35 22.2 | –05 26 37 | 15.13 | 10.2 | M0.5 | 0.85 | 0.22 | 309 | 0.5 | 3.54 | III | 1 | 2008 Feb. 18 | 2008 Feb. 20 | |
| JW 867 | 05 35 31.3 | –05 18 56 | 14.12 | 9.5 | K8e | 0.56 | 0.29 | 212 | >0.3 | 5.78 | II | 1 | 2008 Feb. 23 | 2008 Feb. 23 | |
Notes.
Unresolved spectral types and visual extinctions from Hillenbrand (1997).
From Reipurth et al. (2007).
YSO classification from Spitzer IRAC photometry made public in the first Orion data release of the YSOvar project1 (Morales-Calderón et al. 2011).
Reference. (1) Reipurth et al. (2007); (2) Getman et al. (2005).
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