Table 4.
Spectroscopic classification of the TDEs in our sample.
| Discovery | IAU | Spectroscopic | X-rays |
|---|---|---|---|
| name | name | type (features) | |
| PTF09ge | H+He (Fe) | ? | |
| ASASSN-15oi | H+He (Fe+O+He I) → He | Yes | |
| ASASSN-18ul | AT2018fyk | H+He (Fe+O+He I) | Yes |
| ASASSN-14li | H+He (N+He I) | Yes | |
| iPTF15af | H+He (N+O) | – | |
| iPTF16axa | H+He (N+O+He I) | – | |
| iPTF16fnl | H+He (N+He I) | – | |
| ASASSN-18pg | AT2018dyb | H+He (N+O+He I) | – |
| ZTF19aabbnzo | AT2018lna | H+He (N+He I) | – |
| PTF09djl | H (+DP) | ? | |
| PS18kh | AT2018zr | H (He I+DP) | Yes |
| ASASSN-18zj | AT2018hyz | H (He I+DP) → H+He | Yes |
| LSQ12dyw | H (He I) | – | |
| ASASSN-14ae | H (He I) → H+He | – | |
| PS1-10jh | He | – | |
| PS17dhz | AT2017eqx ( * ) | H+He → He | – |
Notes. The five different subcategories of TDEs based on their spectroscopic features (discussed in Sect. 6.3) are divided by the vertical lines. We denote the specific feature that defines a subcategory with bold letters. From top to bottom: H+He Iron-rich, H+He Nitrogen strong, H double-peaked (DP), plain H and He TDEs. ( * )AT2017eqx starts as a H+He however it does not show any signs of Nitrogen neither Iron or Oxygen lines. In addition it evolves on quick timescales to a He TDE hence it is not grouped with the other H+He TDEs.
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