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Table 2
SED classification.
| Disk class | Criteria | Interpretation |
|
|
||
| Transition disk (TD) | [ 3.6 ]−[ 4.5 ] < 0.2 mag | Inner hole, radial variations of dust properties |
| and/or settling, inside-out evolution. | ||
| Kink/Pre-transition disk (PTD) | [ 3.6 ]−[ 4.5 ] ~ 0.2−0.4 mag, | Holes/gaps with small grains, |
| strong silicate, | inside-out evolution, | |
| and sharp slope change | dust filtering by planet/companion. | |
| Low excess/Depleted disk (D) | [ 3.6 ]−[ 4.5 ] ~ 0.2−0.4 mag, | Small dust depletion, strong settling, |
| and similar slope up to 24 μm | global disk evolution. | |
| Full disks (F) | None of the above | Consistent with homogeneous, continuous, flared CTTS disk. |
Notes. The SED classification used in the paper, together with the different physical interpretations of the SED morphology in each disk class.
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